Grave 2009 Gordion

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Ceramic production and provenience at Gordion, Central Anatolia

Peter Grave a,*, Lisa Kealhofer b, Ben Marsh c, G. Kenneth Sams d, Mary Voigt e, Keith DeVries f

aArchaeology & Palaeoanthropology, University of New England, C02 Building, Armidale NSW, AustraliabAnthropology/Environmental Studies Institute, Santa Clara University, Santa Clara, CA, USAc Geography and Environmental Studies, Bucknell University, Lewisburg, PA, USAd Department of Classics, University of North Carolina, Chapel Hill, NC, USAeAnthropology, College of William and Mary, Williamsburg, VA, USAfUniversity of Pennsylvania Museum of Archaeology & Anthropology, Philadelphia, PA, USA

a r t i c l e i n f o

Article history:

Received 2 February 2009

Received in revised form

22 May 2009

Accepted 28 May 2009

Keywords:

Turkey

Political economy

NAA

Anatolian Iron Age ceramics project

a b s t r a c t

Phrygian Gordion was the political center of an influential Iron Age polity that extended across west

central Anatolia during the first half of the 1st millennium BC. Though the borders of this polity remain

vague a characteristic of the Phrygian footprint is the distribution of highly distinctive ceramics. Theextent to which Gordion potters were the originators of these wares remains uncertain. In this paper weuse Neutron Activation Analysis (NAA) to establish the local signature of predominantly Iron Age

ceramics for this site by combining samples from several decades of excavation with an extensiveregional sediment sequence. We also compare previous NAA work at Gordion to suggest that the

formative stages of the Phrygian state appears to have involved a more extensive network of non-localspecialist producers than previously thought.

Crown Copyright 2009 Published by Elsevier Ltd. All rights reserved.

1. Introduction

Understanding the political and economic organization of theIron Age state of Phrygia in central Anatolia requires data related tolocal production as well as regional exchange patterns. In this paperwe seek to characterize local ceramic production at Gordion, the

capital of the Phrygian state, so that we can better understand thecomplexity of both local and regional exchange patterns in relationto the Phrygian political economy (Fig. 1). To achieve this we useNeutron Activation Analysis (NAA) to compositionally compare

a relatively large sample of sediments from the Gordion regionwithexcavated ceramics from the site.

Establishing local production for ceramics (or additive tech-nologies) is often not as straightforward as establishing prove-

nience for raw materials like obsidian. Social, economic, andtechnological variables combine to alter the geo-chemical finger-print of the clay sources potters used. In addition, the identificationof the original quarries in this case clay beds is often impossible,

given both erosional and depositional processes in what arecommonly highly altered landscapes. In this paper, we define localproduction through a systematic sampling of the baseline geology,

a bottom up ceramic sampling strategy, and through assumptionsbased on relative group sizes.

A previous NAA study of Gordion ceramics (Henrickson andBlackman, 1996) defined not only local production, but provided

a set of interpretations about the changing production andeconomic trajectories at Gordion from the Late Bronze Age into theIron Age. Here, we re-analyze these datasets in relation to ourgeologically established local. Combining these two large NAA

datasets provides a new perspective on the nature of productionand exchange during the Iron Age in Phrygia.

2. Background

2.1. Gordion

The archaeological site of Gordion (modern Yasshoyuk),100 km

SW of Ankara in central Turkey, has a long sequence of occupation,from at least the Early Bronze Age through to the Medieval period

(Fig.1). By theearly1st millennium BC, Gordion becamethe politicalbase for the emerging state of Phrygia, which controlled much ofinland western Anatolia over the first half of the 1st millennium BC

(Sams, 1995; Voigt and Henrickson, 2000). The largest scale settle-ment at the site occurred during the Iron Age and the subsequentHellenistic period. Best known historicallyas the seat of King Midas,the Gordion landscape includes an impressive array of more than

100 burial mounds of Phrygian and later Hellenistic elites.Gordion lies on the floodplain of the Sakarya River within

a broad valley system (Fig. 1b). Tertiary evaporites and pale silts* Corresponding author.

E-mail address: [email protected] (P. Grave).

Contents lists available at ScienceDirect

Journal of Archaeological Science

j o u r n a l h o m e p a g e : h t t p : / / w w w . e l s e v i e r . c o m / l o c a t e / j a s

0305-4403/$ see front matter Crown Copyright 2009 Published by Elsevier Ltd. All rights reserved.

doi:10.1016/j.jas.2009.05.029

Journal of Archaeological Science 36 (20 09) 21622176
mailto:[email protected]://www.sciencedirect.com/science/journal/03054403http://www.elsevier.com/locate/jashttp://www.elsevier.com/locate/jashttp://www.sciencedirect.com/science/journal/03054403mailto:[email protected]


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dominate the landscape near the site and into the inhospitablelands to the west (Erentoz, 2002). Toward the east, the geologyshifts to Tertiary continental clastics, and later basalts in the

uplands. Locally some sediments are heavily altered by hydro-thermal processes. Heavily weathered soils and pediments overlaythe bedrock. Much of this material was removed by erosion,beginning by the Early Bronze Age, that redeposited sediments

within the small stream floodplains. The Sakarya River has aggra-ded deeply since the Bronze Age with pale silts.

The site has had three major phases of excavation. The earliest

wasby the Korte brothers at the turn of the 20th century (Korte andKorte, 1904). The second phase followed World War II, when

Rodney Young re-initiated excavations both of the Citadel Moundand of adjacent tumuli (Young,1951). On the mound, Youngfocused

on the Palace Area, and ultimately exposed a Destruction Levelthat he believed dated to the time of the Kimmerian invasion andcaused the collapse of Phrygia. Youngs excavations ended abruptly

after his death in 1974. The third and latest phase began in the late1980s, when excavations and survey resumed at Gordion underProject Director G. Kenneth Sams and Field Director Mary Voigt(Voigt, 1994; Voigt, DeVries, et al., 1997). Voigts goals were to

betterdefine the stratigraphic sequence at the site, establish a morerefined absolute chronology, explore non-elite areas of the site, andgenerally gain a greater understanding of the domestic andindustrial side of Gordions occupations.

The most recent phase of excavation included systematic study

of local ceramic productionfrom the Late Bronze Agethrough to theHellenistic period (Henrickson, 1993, 1994, 1995; Henrickson and

Blackman, 1996; Henrickson, Vandiver, et al., 2002). An importantcomponent of that work was the comparison of large scale ceramicproduction at the site for the Late Bronze Age (YHSS 9-8, c. 14001200 BC) and the Early Phrygian period (YHSS 6B, 950800 BC).

This was done using elemental data (NAA) for a comparatively largesample of ceramics excavated by Voigt from well defined archae-ological contexts as well as samples of clay from the local region(Henrickson and Blackman, 1996). Henrickson and Blackman

documented a major shift in resource use between the two periodsand flagged the character of local production at Gordion as highlycomplex. One of the more surprising aspects of their study was theidentification of compositional groups as either Late Bronze or Early

Phrygian with little overlap between the two periods.

In 2003 we commenced a large scale assessment of non-local

ceramics at Iron Age sites across Western Anatolia (Anatolian IronAge ceramics project (AIA): http://aia.une.edu.au). The project goalsfocused on understanding exchange and emulation during the IronAge, as new political economies emerged after the collapse of the

Late Bronze Age empires in the eastern Mediterranean, particularlyAnatolia. Gordion, as one of the best excavated Iron Age sites in theregion, provided a foundation for developing a more nuancedunderstanding of emerging regional polities. In addition, we were

able to build on a settlement and landscape survey project whichprovided a detailed geological and geomorphological backgroundfor defining local sediments and their ancient distribution

(Kealhofer, 2005; Marsh, 2005).This paper has two aims. The first is to present the results of our

first phase of ceramic analyses for Gordion (20032005), andspecifically to define the pattern of non-local and locally madeceramics. A broad methodological goal of the AIA project is to

incorporate legacy NAA datasets to extend the scale and research

Fig. 1. a: map of Turkey showing location of Gordion (Yassihoyuk); b: composite map of geology and topography for Gordion and hinterland with locations of sediment samples and

compositional group attributions as discussed in text and presented in Table 2a and b.

Fig. 2. Histogram of the Gordion sample population by chronological phase (EPEarly

Phrygian:- 10th9th c. BCE; MPMiddle Phrygian:- 8thmid 6th. c. BCE; LP Late

Phrygian:- mid 6thmid 4th. c. BCE; Hellenistic:- mid 4thearly 2nd c. BCE; Roman:-

1st BCE3rd c. CE).

P. Grave et al. / Journal of Archaeological Science 36 (2009) 21622176 2163
http://aia.une.edu.au/http://aia.une.edu.au/


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depth of our analytic program. Given the previous extensive NAAdataset of Henrickson and Blackman (1996), a further aim of thepresent study is to compare and contrast the analysis and inter-pretations of both NAA datasets. Together this extensive corpus of

material, from both Young (this study) and Voigt excavations(Henrickson and Blackman, 1996 and this study), provides theplatform for more detailed, future analyses of exchange and

emulation during the Phrygian periods.

3. Methodology

Understanding trade and exchange is predicated on the possi-bility of differentiating between local and non-local production. To

achieve this we employ two strategies. First, we work closely withsite ceramicists with long experience with the local and non-localassemblages to target ceramics defined as local, non-local, andunknown based on typological and fabric criteria. Second, the

geomorphology of the region is studied, and the regionalsedimentary sequences are differentiated. In this case, prior workby project geomorphologist, both in relation to the site and thefloodplain and in relation to the regional catchments, provided an

in-depth understanding of the ancient regional environments and

sediment sequences (Marsh, 1999, 2005).In 2003, the ceramics available for analysis included a limited

numberof samplebags savedfrom specificYoungexcavation contexts

that hadnot been registered, aswellas a much larger array of samplesfrom the more recent Voigt excavations (although a smaller array ofPhrygian period material). With the aid of Keith DeVries, Ken Sams,

and Robert Henrickson an assemblage of ceramics from these twoexcavations was sampled (Fig. 2). Of this set, 146 Young excavationsamples and 133 Voigt excavation samples were chosen for analysishere (n 279). Most samples were chosen specifically because they

were thought to be non-local. Some samples, however, were includedas a measure of what ceramicists identified as local.

A total of 73 sediment samples were also chosen for analysis, 24from stream sediment cores and 49 from different geological

sediments around the region (Fig. 1b, Table 2a). Rather than

attempting to find ancient clay beds, most likely buried in thisheavily eroded landscape, the focus here is on characterizing the

entire geological and sedimentary variability in a w20 km radiusaround the site.

Elsewhere we have detailed our sampling, processing, andanalysis procedures (Grave, Kealhofer et al., 2008; Kealhofer, Grave,

et al., in press). In summary, ceramic and sediment samples arephotographed and recorded in the field, and prepared at the

University of New England for NAA. Comparatively large (1 g)samples are submitted for NAA, with the advantage of minimizing

measurement distortions due to sample heterogeneity, a particularconcern in the analysis of sediments and coarse ceramics. The NAAdataset, composed of twenty three elements with good counting

statistics are then processed through an iterative multivariateroutine of Principal Components Analysis (PCA) and CanonicalVariates Analysis (CVA), identifying and removing outliers, identi-fying and removing non-local groups, and ultimately differenti-

ating the range of locally produced geo-chemical groups.

3.1. Standards

We routinely include replicates of three NIST standards (SRM

679, SRM 1633b, and SRM 2711) in the NAA sample runs both asquality control checks for individual datasets and for individual

elements, and as an important element in published NAA datasetsto enable long term comparison and correction by future studies(Table 1).

3.2. Sediment fitting

Our approach assumes that geologically comprehensive sedi-ment collection will contain samples that approximate the

elemental profile of the local ceramic signature (see also Kealhofer,Grave, et al., in press). However, sediments are not the same asclays; minimally, they will have a coarser rock component andexhibit a greater degree of compositional heterogeneity. Typically,

summed NAA results for each sediment sample are up to 30%

Table 1

NAA results for three standard reference materials (SRM 697, 2711 and 1633b), National Institute for Standards and Technology, Washington D.C. Table shows experimental

resultsfor replicates measured duringthe analysis of the Gordionceramic samplepresentedin this paper. Results aregivenas mean valueswith % coefficient of variation (C.V.)

alongside certified/published values for each element and the deviation of theexperimental mean from the certified/published values (% recovery). Elements reported as parts

per million (ppm) unless otherwise indicated.

SRM 1633b (n4) SRM 679 (n4) SRM 2711 (n5) ppm SRM 1633b SRM 679 SRM 2711

Avg. C.V. Avg. C.V. Avg. C.V. Cert/pub % Recovery Cert/pub % Recovery Cert/pub % Recovery

Ba 667.50 9.02 442.09 8.08 684.67 3.31 Ba 709.00 94.15 432.20 102.29 726.00 94.31

Ca% 1.95 22.18 2.81 11.42 Ca% 1.51 128.97 0.16 2.88 97.71Ce 181.40 2.07 102.48 0.95 72.38 5.30 Ce 190.00 95.47 105.00 97.60 69.00 104.89

Co 48.94 3.56 25.77 2.19 10.07 7.87 Co 50.00 97.88 26.00 99.12 10.00 100.68

Cr 203.90 4.59 109.06 2.53 47.58 6.62 Cr 198.20 102.87 109.70 99.42 47.00 101.23

Cs 10.31 2.68 9.65 7.22 6.57 4.29 Cs 11.00 93.75 9.60 100.52 6.10 107.67

Eu 3.96 1.71 1.82 6.67 1.09 3.39 Eu 4.10 96.52 1.90 95.92 1.10 99.27

Fe% 7.79 2.43 9.06 1.01 2.88 2.62 Fe% 7.78 100.10 9.05 100.08 2.89 99.72

Hf 6.78 2.58 4.18 3.72 7.61 1.41 Hf 6.80 99.71 4.60 90.82 7.30 104.27

K% 2.01 35.02 2.81 18.07 K% 1.95 2.43 82.61 2.45 114.78

La 87.86 1.27 50.55 0.97 37.63 2.69 La 94.00 93.47 40.00 94.08

Lu 1.02 8.98 0.53 7.70 0.45 4.65 Lu 1.20 84.58

Na 0.20 0.00 0.13 0.00 0.88 55.98 Na 0.20 99.50 0.13 99.69 1.14 77.19

Rb 132.09 18.72 177.09 10.57 109.02 9.19 Rb 140.00 94.35 190.00 93.20 110.00 99.11

Sb 5.07 3.47 0.78 1.18 19.61 3.64 Sb 6.00 84.50

Sc 40.08 1.13 22.42 9.21 9.27 1.52 Sc 41.00 97.76 22.50 99.64 9.00 102.98

Sm 18.26 1.62 9.03 0.76 5.93 2.42 Sm 20.00 91.28 5.90 100.47

Ta 2.25 26.01 1.31 22.54 1.59 23.67 Ta 1.80 125.00 2.47 64.29

Tb 2.71 4.54 1.25 12.89 0.81 12.48 Tb 2.60 104.23 Th 25.13 1.44 13.92 3.02 13.41 2.81 Th 25.70 97.78 14.00 97.60 14.00 95.79

U 8.05 11.27 2.12 16.06 2.58 7.80 U 8.79 91.52 2.60 9 9.31

Yb 7.26 2.21 3.63 3.72 3.00 4.61 Yb 7.60 95.56 2.70 111.04

Zn 186.88 14.57 112.81 8.36 349.17 4.26 Zn 210.00 88.99 150.00 69.50 350.40 99.65

P. Grave et al. / Journal of Archaeological Science 36 (2009) 216221762164


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below summed values for ceramic samples. This difference reflects

the diluting effects of dominant but non-measured elements (i.e.silicon and magnesium in basalts and clastics, and sulphur inevaporites). The compositional differences between ceramic andsediment profiles can be expressed as the % difference between

elemental averages (Table 3). The majority of elements are moreconcentrated in the ceramics but are not equally weighted. Toaccommodate this variability the multivariate sediment centroid ismade equivalent to the multivariate ceramic centroid1:

Ceramicavg=Sedimentavg

*Sedimentsample

This fitting technique, effectively aligning both datasets inmultivariate space facilitates matching likely sediment sources forlocal ceramics around a common multivariate centroid withoutdistorting multivariate structural differences between sediment

and ceramic groups.

4. Results

Prior to comparing the ceramics with sediments both datasets

were analyzed separately using a standard multivariate protocoldetailed elsewhere (Grave, Kealhofer et al., 2008). For the initial

ceramic dataset two broad groups were identified with different

Table 2a

Description, and UTM locations for Gordion sediments used in this study and identified in Fig. 1b.

Grp# AIA # Description Field numbers UTM zone UTM E UTM N

i 305 Silty core @ 80 cm Suluklu floodplain 01-3-1 36 416842 4388284

i 310 Silt bank @ 45 cm, marl & basalt sed 01-5-1 36 416853 4382199

i 318 Silty core @ 225 cm basaltic sed near river 01-7-7 36 413966 4396129

i 319 Silty core @ 295 cm basaltic sed near river 01-7-10 36 413966 4396129

i 320 Sandy core @ 250 cm near basalt mts 01-8-5 36 421170 4388782

i 2341 Surface sample, BA mound wash 06_34 36 422164 4387735i 2342 Sandy silt sed below pediment 06_35 36 422263 4387101

i 2346 Sandy loam basaltic pediment sed, dark 06_39 36 420728 4386516

i 2361 Dark clay surface loam Sabanozu plain 06_54 36 416681 4396202

i 3972 Sand-sized basalt small stream sed @ Sabanozu G6 36 422898 4397314

ii 307 Silty core @ 308 cm Suluklu floodplain 01-3-11 36 416842 4388284

ii 308 Gravelly bank, @ 85 cm basaltic sed 01-4-4 36 420953 4387884

ii 321 Sandy core @ 530 cm near basalt mts 01-8-11 36 421170 4388782

ii 2350 Pediment sed in low-basalt catchment 06_43 36 417099 4383634

ii 2353 Silt-loam basalt-rich sed below Upinar 06_46 36 421455 4380644

ii 2354 Light-colored silt-loam sed below Upinar 06_47 36 421634 4380797

iii 306 Silty core @ 165 cm Suluklu floodplain 01-3-2 36 416842 4388284

iii 322 Sandy core @ 775 cm near basalt mts 01-8-15 36 421170 4388782

iii 323 Silt-sand core @ 255 cm, near tumulus MM 01-9A-1 36 415166 4390094



iii 326 Pale silt core @ 165 cm below marl banks 01-12-4 36 408846 4392693

iii 2332 Red expansive clay in Suluklu fan at river 06_25 36 412977 4389945

iii 2338 Fresh sandy basaltic sediment below ekerdeksz 06_31 36 418663 4386573

iii 2343 Sandy basaltic pediment sed 06_36 36 422164 4386594

iii 2352 Weather basalt near Dua Dag Rd. 06_45 36 419407 4384078

iii 2355 Silty BA mound material at ekerdeksz 06_48 36 418889 4388170

iii 2359 Silt-clay stream bottom below Sabanozu 06_52 36 419865 4396518

iv 311 Silt bank @ 155 cm, marl & basalt sed 01-5-7 36 416853 4382199

iv 312 Silt bank @ 230 cm, marl & basalt sed 01-5-11 36 416853 4382199

iv 313 Silty core @ 160 cm deep silty floodplain 01-6-3 36 416460 4392478




iv 317 Silty core @ 75 cm basaltic sed near river 01-7-1 36 413966 4396129

iv 2351 Clay-rich soil, continental clastics 06_44 36 417293 4383902

v 2331 Brick wash in Middle Phrygian layer, Citadel mound 06_24 36 412266 4389533

v 2356 Silty surface sed Suluklu tributary 06_49 36 419793 4389132

v 2357 Silt from deep historic sedimentation T4 area 06_50 36 418410 4390761

v 2358 Pale silt low pediment SW Sabanozu 06_51 36 418395 4395482

v 2360 Silty abandoned plain Sabanozu stream 06_53 36 417169 4394758

v 2370 Silty M Phrygian brick wash S edge Citadel mound 06_63 36 412428 4389361

vi 327 Pale silt core @ 265 cm below marl banks 01-12-8 36 408846 4392693

vi 328 Pale silt core @ 360 cm below marl banks 01-12-12 36 408846 4392693

vi 329 Silty core @ 308 cm Suluklu floodplain 01-3-7 36 416842 4388284

vi 2333 Silt Sakarya R. sed N of mound @ 200 cm 06_26 36 412246 4389805

vi 2334 Silt Sakarya R. sed N of mound @ 400 cm 06_27 36 412246 4389805

vi 2335 Gleyed silt-clay in Sakara R. dredge pile 06_28 36 412012 4389442

vi 2336 Silt Sakarya sed S. of mound @100 cm 06_29 36 411799 4389049

vi 2367 Clay Porsuk floodplain dredgings at Kiranharman 06_60 36 411645 4392510

vi 2369 Silt Sakarya sed 300 cm 06_62 36 412279 4389836

vi 3969 Marly slope wash G2 36 413799 4392952

1 Where Ceramicavg is the average of all of the datasets value for an individual

element, and Sedimentavg is the average of all of the sediment datasets values for

the same element. Sedimentsample is the value of a single sample for the same

element.



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trajectories in the multivariate projections. These were thenanalyzed iteratively with outer groups and outliers identified andremoved until only a core cluster of 106 samples remained. This

group could be decomposed intotwo major subgroups(YH A and B)that in turn contained smaller internal clusters and outliers(Table 4).

4.1. Sediments establishing local

Of the 73 sediment samples analyzed, 21 were removed fromfurther analysis due to their relatively impoverished compositional

profiles. The remaining 52 samples separated into six composi-tional groups, YH ivi (Fig. 3a; Table 2b). An important methodo-logical step in the sediment analysis is to establish overallcompositional trajectories in multivariate projections that relates

the sediment groups to landscape locales.

Compositional distinctions between these six groups reflecteda discontinuous trajectory from basalt to marl. This can be mostreadily expressed in a bi-variate plot of calcium and iron showing

how groups vary between calcium rich marl-type compositions toiron rich basalts (Fig. 3b). YH i and ii are basalt-derived sediments,with YH ii revealing more chemical weathering. YH iii and v are

dominated by pediment soils derived from the clastic lake depositsrocks, with YH iii located closer to the basaltic uplands. YH iv and viare floodplain deposits from deep, silt-rich sections. YH vi is heavilymarl-dominated. The basalt groups are defined by relatively higher

concentrations of iron, scandium, zinc, cobalt and are depleted incalcium, rubidium, and cesium. YH vi has more calcium, cesium,thorium, uranium, and chromium. While a clear trajectory frommarls to basalts is evident in the YH sediments, mapping individual

members of these groups back into the landscape reveals theYH

v(n

6)

Avg.

288

8.7

3

34.8

15.8

142

6.4

7

0.7

5

2.8

6

2.3

5

1.7

8

17.6

0.1

9

0.5

6

53.3

0.6

5

9.4

2

2.9

4

0.7

0.2

5.6

2

.17

1.2

8

47.8

646

C.V.

7.7

3

17.8

10.5

6.2

1

15.2

15.5

13.1

9.7

5

5.2

1

51

9.4

3

9.4

2

47.3

12.1

12.9

8.6

9

9.1

7

18.1

155

10

30

.6

7.6

6

16.7

vi

327

410

10

33

18

260

9.3

0.6

4

2.4

9

2.5

1.1

19.5

0.1

9

0.3

2

55

1

8.8

2.9

0.6

0.4

7.6

1

.7

1.3

36

882

vi

328

250

10

34

20

284

11

0.7

2.8

6

2.4

1.4

19

0.2

1

0.3

3

63

0.9

10

3

0.7

0.4

7.2

2

.1

1.3

49

774

vi

329

260

9.2

34

23

384

14

0.6

6

2.9

8

2.7

1.1

20

0.2

2

0.3

8

69

1.1

10.3

3.1

4

0.7

0.4

8.1

2

.2

1.4

49

898

vi

2333

320

9.4

44

18

197

13

0.8

6

3.3

8

3

1.7

22.3

0.2

4

0.4

6

71

1

11.6

3.7

0.8

0

7.4

1

.8

1.5

54

786

vi

2334

240

11

38

15

291

13

0.7

7

2.5

7

3.1

1.4

19.8

0.2

0.6

9

63

0.8

9.1

3.3

5

0.7

0

6.7

2

.3

1.4

40

764

vi

2335

260

11

34

12

288

11

0.5

9

2.0

9

2.7

1.2

17.4

0.1

9

0.6

4

49

0.7

7.2

2.8

4

0

0

6.2

2

1.2

38

748

vi

2336

310

9.4

40

20

273

9.4

0.8

3.3

6

2.7

2.1

20.5

0.2

3

0.8

1

66

0.9

11.4

3.4

9

0.7

0.6

7.2

2

.8

1.5

58

845

vi

2367

250

7.5

42

20

431

22

0.7

7

3.0

9

2.8

1.5

21.8

0.2

1

0.4

3

74

1

10.9

3.2

7

0.6

0.5

8.9

3

.2

1.4

55

962

vi

2369

260

13

36

15

188

22

0.7

9

2.6

4

2.4

0

18.3

0.2

0.4

7

66

0.9

9.4

3.0

9

0.6

0

6.7

1

.8

1.4

51

700

vi

3969

280

10

39

15

126

18

0.7

3

2.5

7

2.2

1.5

20.5

0.1

6

0.3

1

76

1.3

8.4

1

2.9

4

1

0.4

7.4

4

.9

1.1

54

673

YH

vi

(n

10)

Avg.

284

10.1

37.4

17.6

272

14.3

0.7

3

2.8

2.6

5

1.3

19.9

0.2

1

0.4

8

65.2

0.9

6

9.7

1

3.1

7

0.6

4

0.2

7

7.3

4

2

.48

1.3

5

48.4

803

C.V.

18.1

14.3

10.2

18.8

33

33.6

11.4

14.6

10.6

42

7.4

7

11.1

35.7

12.7

17.2

14.4

8.7

7

39.8

89.1

10.4

39

.2

9.4

16

Table 3

To compensate for a systematic offset between sediments and the ceramics

compositions they most closely match (i.e. and therefore presumed to be local)

a fitting factor is calculated as discussed in the text. This table shows the combined

means of thegeneralceramicgroups YH A and YH B,and of sediment groups (YHivi)

(note the lower S for the sediment mean), and the factor ((Ceramicavg/Sed-

imentavg) Sedimentsample)) to combine the sediments and YH A/B ceramics over

the same (ceramic sample) centroid.

YH A & B YH sed. (ivi) (Ceramicavg/Sedimentavg)

Sedimentsample

Avg. Avg. Fitting factor

Ba 374.10 320.21 1.1683

Ca% 8.02 6.89 1.1632

Ce 49.58 39.79 1.2459

Co 28.40 20.88 1.3607

Cr 286.48 195.90 1.4624

Cs 7.17 7.44 0.9633

Eu 1.16 0.95 1.2275

Fe% 4.80 3.76 1.2761

Hf 3.70 2.90 1.2766

K% 2.70 1.85 1.4561

La 25.77 21.19 1.2162

Lu 0.27 0.23 1.1712

Na% 0.98 0.78 1.2572

Rb 83.63 62.32 1.3419

Sb 0.92 0.74 1.2294Sc 16.99 12.59 1.3495

Sm 4.47 3.63 1.2330

Ta 0.98 0.88 1.1109

Tb 0.58 0.41 1.4056

Th 8.74 6.48 1.3492

U 1.69 1.60 1.0519

Yb 1.90 1.54 1.2303

Zn 96.71 54.72 1.7672

P1009.73 767.69



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sedimentary complexity of the local region, both in space and overtime (Fig. 1b).

To define the local component of the ceramic assemblage, thesediment groups are compared with the largerceramic assemblage.Prior to applying the sediment fitting procedure both sediments

and ceramics are analyzed together. Reassuringly, this combinedanalysis showed that the large core ceramic group of 106 sampleswas the most proximate to the sediments. Following sedimentfitting to the multivariate centroid of the core ceramic group,

a partial match between sediment and ceramic groups highlightedthe fact that notall sediments in the environsof the sitewould havebeen suitable for ceramic production (Fig. 3c). The clastic-derived

YH sediments iiiand v match with the YHA ceramics, whilebasaltic

YH sediments i and ii match with the YH B ceramics. The remaining

floodplain sediments (iv and vi) are without ceramic matches.

4.2. Defining the non-local ceramics

Correlation of local sediments with ceramics was used toidentify the most probable local component of the ceramic sample.

Beyond the local ceramics, multivariate analysis identified a struc-turally complex suite composed of small groups and singletons.When compared with other Iron Age sites in the region, the PCAprojection of the non-local component of the Gordion sample

(Fig. 3d, Table 5) is both large and highly diverse reflecting their

Table 4

Summary statistics for the local component of the Gordion NAA dataset identified organized by the two major compositional groups: marl (YH A) and basaltic (YH B) and their

subsets givinggroup identification, numberof samples in each group,average value and % coefficient of variation (C.V.). Belowdetection limit measurements marked with .

YH A 1 (n 20) 1.1 (n17) 1.2 (n4) 1.3 (n 3) 1.4 (n3) 1.5 (n3)

Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V.

Ba 317.50 21.51 447.47 24.95 227.50 29.46 299.67 25.22 266.00 34.03 284.67 10.26

Ca% 10.55 15.89 8.98 29.60 11.50 11.23 14.47 8.89 8.09 5.34 5.81 6.90

Ce 44.09 11.12 49.16 10.03 31.00 7.90 41.83 5.39 54.75 4.26 40.57 5.96

Co 24.88 17.04 19.27 21.73 24.25 11.36 16.10 10.26 30.15 3.99 27.43 56.43Cr 273.80 27.67 266.29 33.63 341.25 18.27 222.33 12.76 298.50 3.55 231.00 13.93

Cs 7.45 24.76 7.11 36.23 6.08 19.91 11.21 44.78 12.14 28.66 6.76 16.37

Eu 1.02 14.41 1.05 12.18 0.79 10.49 0.74 17.57 1.15 19.14 1.15 19.39

Fe% 4.08 10.85 3.44 10.91 3.56 10.38 2.79 8.92 4.62 4.59 4.55 19.27

Hf 3.56 18.75 3.71 15.92 2.03 16.32 3.02 8.41 4.09 6.06 3.21 12.15

K% 2.45 24.20 2.73 26.08 3.15 12.83 2.09 34.71 2.31 11.96 2.05 15.34

La 22.95 9.63 26.38 10.13 16.55 3.61 20.73 6.07 28.85 8.58 21.07 3.56

Lu 0.26 8.58 0.25 9.44 0.20 8.65 0.14 86.90 0.26 0.00 0.32 9.45

Na% 1.06 27.79 0.96 20.83 0.81 22.87 0.65 6.97 0.78 2.74 1.38 24.98

Rb 65.50 27.44 65.81 20.18 53.50 6.38 66.80 16.48 104.25 24.08 34.60 87.06

Sb 0.82 20.73 0.86 22.15 0.70 11.66 0.90 22.22 0.97 6.59 3.13 67.53

Sc 13.52 13.20 11.78 8.56 13.43 5.88 9.97 8.99 16.90 5.02 21.20 12.68

Sm 4.01 8.72 4.19 9.12 2.87 3.08 3.47 1.80 4.59 5.55 3.89 8.88

Ta 1.11 48.98 0.90 71.30 0.73 68.85 0.80 106.80

Tb 0.35 104.65 0.58 50.64 0.15 200.00 0.42 88.19 0.75 9.43 0.75 5.53

Th 7.52 21.18 8.41 9.09 5.43 10.89 7.28 10.99 11.05 4.48 8.96 15.18

U 1.66 81.52 1.89 63.35 2.50 36.22 1.30 108.51 1.34 141.42 0.47 173.21Yb 1.77 10.64 1.64 9.71 1.33 7.23 1.43 10.66 1.97 0.36 2.37 2.32

Zn 88.56 17.60 73.44 13.39 97.00 16.47 73.50 30.60 94.55 11.14 87.53 6.58P898.48 1006.29 846.27 801.64 948.03 792.86

YH B 2 (n30) 2.05 (n3) 2.1 (n8) 2.3 (n3)

Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V.

Ba 432.63 27.24 414.00 9.40 294.75 48.22 305.00 9.97

Ca% 5.96 17.01 5.79 41.76 6.29 10.25 2.54 15.82

Ce 57.00 6.83 51.50 2.39 47.70 5.37 49.33 3.10

Co 34.57 17.65 37.63 15.53 30.04 9.77 39.53 21.14

Cr 300.03 10.89 338.33 13.33 266.88 5.66 364.00 20.53

Cs 6.14 14.15 8.06 11.02 8.87 8.52 5.01 25.69

Eu 1.39 13.13 1.13 10.89 1.15 7.21 1.36 17.54

Fe% 5.94 8.00 6.07 7.28 5.47 5.65 6.33 8.29

Hf 3.94 9.57 4.06 5.49 3.87 8.86 4.17 1.46

K% 2.92 20.17 3.00 24.35 2.56 22.04 2.51 37.64

La 29.22 7.07 25.93 6.79 24.45 3.23 26.67 1.32Lu 0.30 7.56 0.31 1.84 0.35 5.62 0.32 6.25

Na% 0.98 20.79 0.90 7.12 0.99 15.34 1.19 17.22

Rb 104.13 23.47 109.83 18.34 108.66 23.24 78.77 20.49

Sb 1.08 15.06 1.12 23.77 0.84 20.92 0.61 26.56

Sc 20.90 7.67 21.97 3.92 21.58 4.14 22.57 8.08

Sm 5.25 6.87 4.76 3.18 4.36 7.60 4.80 1.70

Ta 1.18 53.23 0.39 173.21 0.54 149.20 1.68 15.85

Tb 0.76 40.57 0.54 87.21 0.58 62.18 1.07 21.04

Th 9.83 8.08 10.02 7.74 9.71 2.87 7.67 4.91

U 1.60 86.83 1.58 86.99 2.01 45.59 0.97 93.87

Yb 2.06 9.92 2.18 7.12 2.36 9.97 2.10 8.25

Zn 113.74 15.09 110.67 7.52 97.84 16.32 122.10 22.04P1141.57 1159.76 941.85 1050.29



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compositional and geological heterogeneity (see Grave, Kealhofer,et al., 2008; Kealhofer, Grave, et al., in press).

4.3. Characterising the ceramic assemblage

A total of 10 local (YH 1-2.3 and local outliers; n106) and 29non-local groups (YH 3-2000 and non-local outliers; n173) were

identified (Tables 4, 5 and 6). Outliers include 12 local and 17 non-local samples. All outliers were removed from further analysis.

4.3.1. Local ceramics (n106)

Local ceramics are defined both by their abundance and their

matches with local sediment samples (Fig. 3c). YH A includes YH 1and its subgroups, while YH B is composed of YH 2 and itssubgroups. Of these two clusters, YH 1 and its subgroups aremarginally larger (n 50). The subgroups, within both local clus-

ters, may reflect shifts in clay source location within a similargeology or shifts in processing over time. In general, both local YHclusters are common in all periods. The local YH 2 cluster (includingsubgroups) is proportionally about one-half as common as the

local YH 1 cluster over time. The one main exception is during the

Late Phrygian (LP), when YH 2 is nearly as abundant as YH 1 (seeTable 6). This suggests considerable continuity in local ceramicproduction.

Both of the main local groups have different chronologicaltrajectories (Table 6). YH 1 is first used in the Middle Phrygian (MP)period, and is most common at that time; however its usecontinues into the Hellenistic period. YH 1.1 and 1.2 begin in the

Early Phrygian (EP) period, but 1.1 follows a similar trajectory to YH1, while 1.2 is last used in the LP. YH 1.4 and 1.5 were only used inthe MP and LP.

YH 2 is used throughout the periods studied, but is most

common during the LP, overshadowing any other group at anyother time. In the Roman period it is the only local YH group rep-resented. YH 2.1 and 2.3 are used only during the Phrygian periods,and only YH 2 and 2.3 date earlier than the MP. Additional, rare,

local sources are used throughout the sitesoccupation (singletons).However, these patterns are based on small group sample sizes andtherefore may not be representative.

The trajectories of YH 1 and 2 suggest a shift in importance

between YH 1 and YH 2, which could relate either to shifting sourceavailability or to changing clay preferences (in relation to forms andstyles).

In the MP, the greatest number of local groups was represented(9), while eight were found in LP. All of the groups found in the LPwere used in the MP, suggesting a very strong continuity in bothclay sources and in clay processing. Both before and after these

periods four different local clay types were in use, and there is lessoverlap in clay types (only 2 shared: 1.1 and 2).

4.3.2. Non-local ceramics (n173; 29 groups plus 17 outliers)While the number of local groups is large, the number of non-

local groups is even greater2 (Table 6). We expect that observed

compositional diversity will increase with increasing group size(Rhode, 1988) but relative to their size, the Late Phrygian samplehas an unusually high number of non-local groups and the Helle-nistic sample a comparatively low number of non-local groups

(Fig. 4 inset; Table 6). The LP includes not only the most non-localsamples, but also the greatest number of non-local groups (20).Four groups (YH 10, 600, 900 and 2000) accountfor>5%each of the

non-local assemblage, while the remainder (16 groups) have 2% of the non-local assemblage are represented in at leasttwo periods. All of the groups with 5% or more of the non-localsample have samples from at least as early as the MP. Nine groupsbegin in or after the LP (all 24% of non-local samples). In general

terms, there appears to be considerable continuity in exchangepatterns through the Phrygian period, although a significantnumber of new sources were added in the LP. Non-local outliers are

present in low frequencies in every period. There is one major

exception to this. During the Hellenistic period, one source standsout as the most dominant non-local source for any period (YH 10).This group includes mainly black glazed wares, and first occurs in

the Middle Phrygian period.

5. Henrickson and Blackman 1996

Based on NAA of 289 samples from Gordion including bothexcavated ceramics and clays, Henrickson and Blackman (1996)identified five compositional clusters (here labeled as HB AE) thatcould be statistically decomposed into 13 sub-clusters (Table 7).

Explicitly aware of the probabilistic character of inferring ceramicprovenance from compositional data (Henrickson and Blackman,1996, p73 note 35) they defined a set of empirical criteria from

which to infer local production: a) compositional matches betweenclay and pottery samples; b) compositional groups with a large n;c) large n groups that also contain a wide range of types; d)inclusion of heavy, large or cumbersome types most readilyproduced locally; e) compositional groups that contain samples

from multiple periods (1996: p. 76). They considered the presenceof only a small number of large groups in their dataset indicative oflarge scale local production both for the LBA and EP periods atGordion. The largest group in this dataset, HB B (n159), repre-

sents more than 50% of the total sample and is largely restricted toLate Bronze Age samples. While considerably smaller, HB A (n69)is predominantly Early Phrygian. HB CE are even smaller (Table 7).Henrickson and Blackman matched HB B sampleswith local sediments.

While Henrickson and Blackman did not find a local sediment

match for HB A groups they assumed that these groups were alsolocal because they included comparatively large subgroups anddominated the entire Early Phrygian sample.

With the likely signatures of local and non-local samples for ourGordion Iron Age sample now identified we can compare ourdataset with that of Henrickson and Blackman. There are two major

concerns for this type of comparison. In order to integrate the twodatasets each must be reduced to a common set of elements (in this

case 21). Reduction of the number of elements used in a multivar-iate analysis has a direct impact on the level of resolution that canbe achieved (Grave, Lisle, et al., 2005). We therefore relax the

resolution requirements of the comparison by restricting it togroup mean values for the local YH A and B, non-local YH groups,and the published BH mean values. The combined dataset is also

decompressed for multivariate analysis by removing the more

2 The high proportion of non-local groups as well as of non-local ceramics in the

sample reflects the well-informed selection of non-local samples by site

ceramicists,



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Fig. 3. Multivariate analysis of the present studys (YH) and Henrickson and Blackman (1996) (HB) NAA datasets. Point projections are combined with conventional normal

distribution ellipses (2s) but also with non-parametric density contours to highlight the probabilistic complexity inherent in multivariate modeling of this dataset: a) PCA projection

showing multivariate relationship for sediment groups YH iYH vi. In this projection the YH sediment centroid has been fitted to the centroid of the two clay groups of Henrickson

and Blackman (1996) (labeled HB Clay 1 and Clay 2) as discussed in text to indicate a high level of correspondence between the basaltic and marl sediments and clays of the two

datasets; b) bi-variate plot of calcium % and iron % for the sediments showing the negatively correlated compositional trajectory (arrow) moving from marl (YH vi) to basaltic (YH i)

compositions. Discontinuous and non-linear character of data (consistent with the discrete geological origins of the samples) highlighted by non-parametric density contours (each

contour accounts for 5% of the sample) and comparison of linear and exponential fits; c) PCA of the Gordion local dataset composed of two general ceramic groups YH A and YH B

and the sediment groups that have been fitted to the YH A and B multivariate centroid (note this project excludes sediment groups that remain outliers after fitting (YH iv and vi); d)

PCA of the ceramic dataset showing orientation of YH local and YH non-local compositions outliers removed. The local compositional trajectory is indicated by the yellow arrow



10/15

compositionally exotic non-local groups identified in the separateYH and the HB analysis (HB CE).

A second potential problem is the possibility of an offsetbetween NAA measurements from different facilities. As the stan-dards used in the Henrickson and Blackman (1996) paper are eitherno longer available (SRM 1633) or published in a way that is not

amenable to offset calculations, we could not directly identify orcorrect potential differences between the NAA datasets. However,their published standards data indicate an overall high level ofabsolute precision and accuracy for the HB dataset comparable to

ours. In addition, from our previous experience in combiningdifferent uncorrected NAA datasets of ceramics for a single site NAAmeasurement offsets are small, particularly at the relatively coarselevel employed here of distinguishing between local and non-local

elemental profiles (Grave, Kealhofer, et al., 2008).Multivariate analysis (PCA, CVA, Hierarchical Cluster) of the

combined dataset shows it to be composed of three groups (Fig. 3e& f). The first of these captures all groups identified as local (YHA,

B and BH B, C and Clays). The second group is composed of non-localYH500, 600, 800 and 900 and it is with these that the Henricksonand Blackman groups HB (local) A1-4 most closely correspond.

A third group is exclusively composed of YH non-local groups. The

presence of non-local groups from YH that are not replicated in theHB dataset is likely to reflect the very different archaeologicalcontexts from which the samples were taken (Voigt vs. Young

excavations) as well as the sampling regime of Henrickson andBlackman focusing on what were thought to be predominantlylocal ceramics.

This apparent contradiction in the interpretation of the HB A

series allows three possible explanations: the HB A seriesrepresents a local compositional profile not sampled for ouranalysis; HB samples collected from the destruction level weresignificantly compositionally altered by fire; HB A samples are

non-local. We suggest that a non-local origin offers a best-fitinterpretation.

The first alternative, that we did not identify a local composi-

tional profile, seems the least likely. Our sediment sampling wascomprehensive and designed to represent the geological range inthe Gordion catchment within a 1520 km radius. All of theretained sediment samples fall within the local YH A and B clusterof ceramics suggesting that we had captured the range of local

compositional variability. Our ceramic sampling was also a broadspectrum approach designed to encompass the range of likely localand non-local wares present in the Iron Age levels. From thecomparison of the sediment and ceramic data we could clearly

identify both local and non-local elemental packets.The second alternative, in-situ compositional alteration

through burning, while possible, does not match the elementaldata profiles. Notwithstanding the explicit selection criteria

employed by Henrickson and Blackman to exclude obviously fire-

affected samples (1996: p. 70 note 19), the high temperatureconflagration of the Destruction Level (one source for the Hen-rickson and Blackman Early Phrygian samples) provides the

potential for systematic volatilization of temperature sensitiveelements (Grave, 2009). However, this scenario is not supportedas HB A is enriched in several elements with particularly low

melting and boiling points relative to its potentially unalteredequivalent HB B (i.e. Cs, Rb, K, and Zn which melt below 500 Cand boil below 1000 C).

The third alternative, that, HB A1-4 are non-local, is supported

by the matches between them and the YH non-local groups whosemultivariate trajectory suggests a distinct geological origin relativeto the local YH A and B packet.

6. Discussion

Through the definition of local vs. non-local ceramics we have

identified several unusual patterns in ceramic production atGordion, particularly during the Early Phrygian period. While theceramic sample chosen for our analyses was focused on non-localsamples, at most other Anatolian sites locally produced (stylisti-

cally non-local) ceramics usually dominate our sample. AtGordion, however, the non-local sample was substantially largerthan the local. This partly reflects the expertise of the siteceramicists in non-local sample selection and their long experi-

ence at the site, and partly the prominence of imports at thisinland site, particularly in the early stages of Phrygian politicaldevelopment. Non-local groups are not strongly patterned byperiod in our sample (except the Hellenistic period black glazed

samples of YH 10).The importance of our definition of the local and non-local

sample at Gordion is more strongly highlighted when wecompare it to the Henrickson and Blackman (1996) dataset that

explicitly targeted local ceramics. When re-analyzed in relation toour local sediment groups their Early Phrygian assemblageappears to be ca. 80% non-local and belongs to one of the threebroad packets of non-local samples in our analysis. The archaeo-

logical context of the HBA samples, within the Palace Area of theCitadel Mound, undoubtedly plays a strong role in this distribu-tion. When compared to their dominantly local LBA sample, thiseven more strongly supports a dramatic change in the organiza-

tion of the political economy at Gordion than originally suggested

by Henrickson and Blackman. While these contexts, and thesesamples, provide no data about the range of (non-ceramic) goodsthat may or may not have been imported to the site in the EarlyPhrygian period, the diversity of non-local proveniences and the

range of jugs, jars, and bowls represented in the EP assemblagesuggests that elite food practices, potentially feasting, usingvessels brought from a broad region, were a significant factor inEarly Phrygian political dynamics. The inflow of vessels into the

Palace Area runs counter to a view that political centers were alsoplaces for production of exports into the larger region. The natureof economic relationships and production is substantiallydifferent from LBA patterns at Gordion.

The comparison of the two NAA datasets underscores thedifficulties in obtaining archaeological ceramic samples that are

both well contextualized and broadly representative. Whilerelatively large in number, the limited geographic extent of the

sediments used by Henrickson and Blackman constrained theirability to differentiate non-local groups, with their conservativeinterpretation erring on the side of an undefined local. Thoughspecific, their selected archaeological contexts, as noted above,

running from marl (YH A) to basaltic (YH B) compositions. Note the relatively compact character of the YH local compared to the multivariate extent of the two YH non-local groups

reflecting the geological heterogeneity of the non-local samples; e) PCA projection of group means for the YH dataset and the HB NAA dataset based on 21 common elements.

Colored circles mark the local group means for YH A (red) and YH B (green); colored squares mark clay means for HB Clay 1 (blue) and HB Clay 2 (red). Solid circles mark the HB

ceramic group means. Note only the major YH local and non-local groups are used for this comparison. Red ellipse separating local from non-local groups is a 3D rendering of the

red demarcation line shown in f; f) Two dimensional projection (Hierarchical Cluster Analysis - Wards algorithm) of the same dataset and symbols of e. HB group B sub-clusters are

confined to the YH local groups (red); HB group A sub-clusters are confined to a subset of YH non-local groups (green), with the remaining YH non-local groups (yellow). Red line

separating local and non-local groups equates with 3D red ellipse of e.



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YH1200 (n2) YH1300 (n3) YH1400 (n 5) YH1500 (n4) YH1600 (n 3) YH1700 (n 3) YH1800 (n6) YH1900 (n

Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V. Avg. C

Ba 831.00 12.08 676.33 7.47 657.40 58.50 642.50 22.46 428.00 31.39 614.33 10.90 449.00 23.68 454.00

Ca% 4.71 5.70 0.90 22.14 2.45 1 11.89 2.60 47.73 5.72 41.67 4.53 10.06 9.11 31.56 5.94 1

Ce 91.50 3.86 112.33 8.27 84.72 11.51 98.75 19.24 71.17 5.21 98.67 3.10 83.92 4.67 65.60

Co 12.00 23.57 31.50 35.35 24.90 24.74 53.00 21.07 28.80 34.98 15.47 11.30 19.80 24.58 75.40 1

Cr 78.70 12.04 67.77 3.36 100.82 47.65 127.25 7.16 219.33 10.54 104.67 4.90 112.00 9.47 304.00

Cs 19.55 3.26 13.40 6.84 4.32 27.68 10.43 30.62 46.83 25.13 17.53 7.33 25.82 21.64 8.26 2

Eu 1.77 5.21 1.64 6.42 1.46 16.98 1.58 13.09 1.35 11.06 1.24 4.45 1.37 18.62 1.42 1

Fe% 3.22 11.86 3.92 1.88 3.93 9.72 5.29 14.87 4.96 14.20 4.25 0.62 4.13 9.90 6.44

Hf 8.76 12.27 8.00 6.57 6.44 11.76 10.05 13.14 5.68 15.73 5.57 13.43 4.95 9.19 10.60

K% 2.73 3.89 4.75 6.14 3.33 20.96 3.50 8.41 2.85 12.46 4.59 13.97 2.83 13.42 2.34 5La 51.95 3.13 58.67 6.73 47.12 10.28 52.55 17.33 37.63 7.59 52.30 0.96 44.28 9.68 32.54

Lu 0.48 1.49 0.67 2.29 0.23 56.15 0.41 18.94 0.41 9.78 0.57 1.01 0.33 6.20 0.34 1

Na% 1.10 13.56 0.93 6.59 1.30 43.16 0.81 69.03 0.44 5.76 0.31 17.58 0.80 45.99 0.82

Rb 138.50 8.68 236.33 3.60 98.02 32.29 160.00 13.50 181.00 34.11 228.33 3.34 134.50 11.82 120.00 1

Sb 4.80 8.70 2.11 1.80 0.52 63.01 1.63 45.88 2.74 64.89 3.38 8.40 1.79 25.17 0.90 3

Sc 15.30 11.09 20.73 2.66 12.26 30.56 18.05 27.39 20.00 3.04 16.47 4.60 13.23 10.68 22.92

Sm 7.67 0.65 8.90 6.73 6.06 19.81 7.44 29.05 6.48 4.03 8.60 2.59 6.23 4.80 5.74

Ta 1.36 5.74 3.75 36.83 2.10 47.89 5.35 20.62 1.17 97.15 1.88 15.56 1.04 85.72 4.88 4

Tb 0.97 24.79 1.38 11.26 0.91 34.42 0.30 2 00.00 1.00 12.70 1.52 15.58 1.01 15.39 0.72 9

Th 17.85 6.73 26.10 4.00 16.44 31.49 19.10 18.37 16.67 23.05 25.30 5.82 17.23 3.51 10.40

U 4.03 32.64 5.03 15.74 2.48 25.47 2.58 34.79 1.49 87.85 3.63 3.91 2.77 53.09 2.44 3

Yb 3.10 8.91 4.68 5.76 1.99 18.27 3.10 20.91 2.98 11.61 3.85 2.40 2.43 4.09 2.44

Zn 92.70 7.17 198.00 10.44 77.26 16.58 130.00 10.88 100.93 15.63 84.63 12.68 89.53 23.71 124.00 P1393.71 1487.81 1156.48 1356.24 1187.64 1301.63 1028.11 1262.14


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did not provide a systematic sample of the overall range of

ceramics during the Early Phrygian period. While the strength oftheir sampling was both the contextual and chronologicalcontrol of the archaeological contexts, this also limited thesample assemblage to a highly specific and specialized Early

Phrygian sample. The diversity of proveniences and styles in theEarly Phrygian assemblage, suggests that Henrickson andBlackmans arguments for standardization and local massproduction in both the LBA and Early Phrygian periods at Gor-

dion may need to be reevaluated.

7. Conclusion

In this paper we specifically aimed at characterizing localproduction and distinguishing imports during the Iron Age at

Gordion. In conjunction with a comparison with earlier NAA workof Henrickson and Blackman we could address two issues, onemethodological and one substantive. Methodologically, incorpo-

ration of legacy NAA datasets into recent NAA analyses allows us,

and others, to integrate a wide field of data, leading not only toreinterpretations, as suggested here, but also to much more

comprehensive understandings of individual sites and theirregional contexts. Care must be taken, however, to considerdifferences in sampling framework and analytic regime when

evaluating differences in interpretation. Cross comparison of thenumerous legacy datasets for Turkey and the wider Aegean offersthe opportunity for a more appropriate large scale understanding ofproduction and exchange dynamics across the region.

Substantively, the combined datasets from the Henrickson and

Blackman study and the current AIA work demonstrate theremarkable transition in political economic relationships thatoccurred during the formation of the Phrygian state at Gordion.This is revealed in the apparent shift from locally made, yet highly

standardized ceramics of the LBA identified by Hendrickson andBlackman, to the import (at least into the elite Palace Area) of(relatively?) standardized ceramics from a geographically widerange of non-local sources during the Phrygian periods. Despite the

loss of political hegemony during the later Middle and Late Phry-

gian period (Lydian, Persian incursions), the ceramic assemblagessuggest a strong continuity in the use of sources/technologies.Preferences shift among local sources (from YH 1 to YH 2), but both

remain in use. The strength of external influences at Gordion in theLP is seen both in the abundance of non-local groups and thediversity of groups represented. This economic and exchange

florescence, in the midst of political change, suggests that while thecontrol of Phrygia may have been wrested from Gordion, the cityremained an important center. Subsequent increases in thefrequency of imports, alongside a decline in the number of import

sources, suggest a substantial change in both the political andeconomic composition of the site during the Hellenistic period. Thetwo Hellenistic phases at the site (YHSS 3a and 3b), however, needto be more carefully evaluated. While ceramic stylistic evidence

suggests a similar trajectory, documenting the changing pattern

Fig. 4. Chronological comparison of YH local and non-local samples by chronolog-

ical phase (EPEarly Phrygian:- 10th9th c. BCE; MP Middle Phrygian:- 8thmid

6th c. BCE; LP Late Phrygian:- mid 6thmid 4th c. BCE; Hellenistic:- mid 4thearly

2nd c. BCE; Roman:- 1st BCE3rd c. CE). Note for comparison both local and non-

local components recalculated to sum to 100. Inset shows the % of non-local groups

by % sample size as a measure of import diversity for each chronological phase. The

Late Phrygian sample has an unusually high number of non-local groups and the

Hellenistic sample a comparatively low number of non-local groups relative to their

sample size.

Table 6

Counts of YH local and non-local groups by chronological phase.

Y H loca l EP M P MP & L P LP L P/Hell . Hel l. R oman U NIDP

YH A 1 10 2 3 3 2 20

1.1 2 4 1 4 2 3 1 17

1.2 1 1 2 4

1.3 1 1 1 3

1.4 3 3

1.5 1 1 1 3YH B 2 1 4 3 12 4 2 3 1 30

2.05 1 1 1 3

2.1 5 3 8

2.3 1 1 1 3

Outlier 1 3 2 1 3 2 12

P6 33 10 28 13 8 3 5 106

Y H non-loca l EP M P M P & LP L P L P/Hell . Hell . R oman U NIDP

3 1 1 1 3

3.1 2 1 3

3.2 2 2

10 1 1 2 25 29

11 1 4 5

11.5 2 2

12 1 1 2

100 1 1 2 1 1 6150 1 1 2

200 2 2 1 5

300 1 5 1 7

400 2 1 2 5

500 1 1 2 1 5

550 2 2

600 2 5 1 1 1 10

700 1 1 2

800 1 1 1 3

900 2 1 1 2 1 2 9

1000 2 2

1100 3 1 1 1 6

1200 1 1 2

1300 3 3

1400 1 2 1 1 5

1500 1 3 4

1600 1 2 3

1700 3 3

1800 2 1 3 6

1900 2 3 5

2000 1 4 6 1 3 15

Outlier 3 1 2 3 3 3 2 17

P18 18 18 38 12 46 12 11 173



14/15

of non-local sources with the future potential of identifying

sources will be essential for betterunderstanding the dynamics ofthe political economy of Phrygia and Gordion.

Acknowledgments

This research was funded by the Australian Research Council(DP0558992) and National Science Foundation (0410220). We

thank anonymous reviewers for their comments and suggestions.Sadly, co-author Keith DeVries passed away before the comple-tion of this manuscript. His insights and acumen will be sorelymissed.

References

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6787.

Table 7

Henrickson and Blackman (1996, appendix 2, p 83) NAA data, giving group identification, number of samples in each group, average value and % coefficient of variation (C.V.).

Below detection limit measurements marked with .

HB A-1 (n27) HB A-2 (n11) HB A-3 (n 9) HB A-4 (n22) HB B-1 (n7) HB B-2 (n 8) HB B-3 (n 78) HB B-4 (n49)

Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V.

Ba 477 24.5 490 21.5 600 22 458 27.3 5 36 21.3 595 15.9 367 21.8 371 31

Ca% 6.16 38.4 6.05 23 6.12 25 7.7 22.7 13.9 24.2 7.46 22.7

Ce 95.4 8.2 90.2 13.9 79.9 8.8 70.6 10.7 55.5 7.9 64.2 7.2 49.9 7.7 58.5 7.7

Co 26 9 22.1 18.3 20.5 18.3 15.2 11.8 19.4 12.1 20.6 5.5 22.3 16.3 27.9 8.6Cr 266 15.7 148 11.6 128 15.6 1 46 10.4 155 17.8 200 8.2 272 17.5 429 26.1

Cs 9.91 22 6.69 17 9.71 12.8 7.33 14.1 7.12 9.5 5.57 6.3 11.6 21.8 7.38 11.3

Eu 1.43 8.6 1.42 1 1.5 1.31 12.9 1.23 8.1 1.07 7.1 1.13 6 0.97 10.3 1.11 7.5

Fe% 5.24 5.5 5.16 8.7 4.34 10.8 4.4 7.8 4.17 5.7 4.19 4.8 4.03 16.3 4.89 7.3

Hf 6.17 7.4 6.7 12.7 5.28 9.8 5.07 8.6 4.32 16.2 4.05 19.3 3.67 12.2 3.99 9.1

K% 2.5 9.5 2.16 9 2.6 14 2.51 12.4 2.57 12.4 2.21 12.6 2.2 17.7 2.36 10.1

La 51.1 6.6 49.8 13.5 45.4 8.7 39.3 9 31.5 5.8 38.4 9.3 28.5 7.2 33.8 8.2

Lu 0.46 12.2 0.51 24.3 0.41 11.4 0.32 13.2 0.26 24.1 0.26 16.6 0.28 15 0.3 16.4

Na% 1.11 19.3 0.69 47.4 0.83 27.3 0.93 33.9 1.33 15.9 1.52 14.6 0.84 28.4 0.97 12.5

Nd 36.3 8.9 36.8 17.2 34.3 9.4 29.6 14.6 24 10.5 26.1 7.5 20.8 17.1 24.3 12.4

Rb 156 11.5 122 22 145 10.5 125 10.4 107 12.7 91.7 4.1 98 13.4 114 11.6

Sc 18.5 6.7 17.6 9.3 16.6 14.9 14.8 11.9 12.8 7.9 13.7 5.2 14.2 18 17.3 8.6

Sm 7.22 6.8 7.21 13.1 6.39 11.4 5.66 10 4.35 8.9 4.79 5.2 4.19 8.7 4.73 8.5

Ta 1.36 10.7 1.46 10.3 1.13 6.5 1.29 8.9 0.86 12.3 1.03 14 0.94 10.4 1.07 13

Tb 0.95 10.5 0.99 22.9 0.91 13.8 0.75 14.3 0.64 12 0.6 15.5 0.61 14.5 0.69 13.8

Th 14.9 11.2 16.7 11.8 14.6 6.7 10.4 9.4 9.41 9 11.7 4.9 8.27 11.9 11.3 10.8

Yb 3.4 10.4 3.49 26.5 2.82 8.1 2.3 14 1.76 14.6 1.92 15 1.95 10.1 2.13 10.6Zn 101 10.2 90.9 16.7 103 10.2 78.9 19.7 91.3 7.5 94.5 12 83.7 19.2 101 10.7P

1282 1121 1229 1026 1076 1191 1010 1225

HB B-5 (n11) HB B-6 (n 6) HB C-1 (n7) HB D-1 (n 13) HB E- 1 (n 3) HB Clay 1 (n25 ) HB C lay 2 (n13)

Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V. Avg. C.V.

Ba 371 26.4 454 25.2 380 17.6 698 24.7 411 16.2 370 15.2

Ca% 9.34 13.4 9.67 18.5 15.8 16.7 5.75 34.4 2.22 42 8.59 20.6 21.2 34.5

Ce 46.7 5.2 58.4 5.6 39.1 8 83.5 5.7 64 4.1 59.2 5.1 43.6 9

Co 24.6 1 1.6 2 6.6 6.3 1 9.3 11.9 9.6 8.4 47.9 6.2 27 6 17.5 13.7

Cr 357 27.4 322 12 281 25.5 62 8.9 324 10.7 192 9.3 230 22.8

Cs 5.88 17.8 3.36 7.7 8.91 12.2 6.64 7.4 3.25 5.8 8.36 15.7 18.3 13.3

Eu 0.95 5.8 1.03 7.5 0.74 7.6 1.26 7.3 1.89 3.2 1.26 5.2 0.81 9.5

Fe% 4.36 10.9 4.14 5.7 3.3 11 2.89 4.2 8.8 3.3 5.12 6.2 3.11 11.5

Hf 3.3 5 3.52 4.5 2.67 1 1.4 6.04 7.2 5.58 2.6 3.89 6.3 3.24 16.7

K% 2.32 8.4 1.54 6.7 1.93 16.9 2.38 9.2 1.76 4.7 2.45 21.4 1.81 22.5

La 26.5 5.3 31.8 8.2 22.3 7.6 49.4 6 33.1 1.5 33.5 4.7 25.1 9.4

Lu 0.24 10.4 0.23 9.1 0.24 28.7 0.29 13.8 0.27 11.4 0.32 13.7 0.27 10.6Na% 0.89 18.1 1.28 11.6 0.64 20.7 2.01 10.1 2.01 8.2 1.14 33 0.74 30.3

Nd 20 7.7 23.1 17.3 15.9 15.9 33.3 7.6 27.8 8.5 24.8 16.1 18.5 17.3

Rb 97.1 11.2 64.6 19.4 81.2 121 118 9.1 66.8 5.5 93.5 15 99.3 13.6

Sc 15 9.9 13.1 6.9 11.6 11.2 8.5 3.3 28.5 4.7 16.5 6.8 11.1 10.8

Sm 3.94 4.7 4.31 6.1 3.27 5 5.89 5.1 6.46 4.9 5.05 5.1 3.71 11.4

Ta 0.96 8.9 0.88 8.1 0.74 11.3 0.89 7.4 2.39 4.4 1.1 7.9 0.87 12.7

Tb 0.62 21.6 0.62 11.9 0.49 15.9 0.7 8.1 0.85 7.1 0.72 13 0.52 20.3

Th 8.13 6.1 7.69 6 7.25 7.9 15.8 6.4 5.55 4.8 9.1 8.3 8.8 12

Yb 1.75 3.7 1.83 7.1 1.71 20.5 2.23 13.8 2.06 10.8 2.25 5 1.74 13.2

Zn 88.3 6.8 73.4 17.4 75.5 10.3 91 39.7 135 17.1 85.1 10.2 67.1 15.9P1089 1107 973.6 1206 770.2 992 947.3



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