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INDEX MAP
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EARLY SILURIAN
EARLY ORDOVICIAN
KING'S POINT COMPLEX
Fine- to medium-grained granite and quartz syenite, containing feldspar as single crystals ofmicroperthite and plagioclase or in graphic quartz-feldspar intergrowths; amphibole is an accessorymineral
Amphibole-porphyritic ash-flow tuffs, characteristically containing oikocrystic phenocrysts oraggregates of black amphibole; tuffs range from highly welded and compacted, layered, ash flows,through more massive oikocrystic amphibole and red-spotted ash flows, to massive or layeredaphyric flows containing fine-grained amphibole and aegirine microphenocrysts in the groundmass;quartz and feldspar phenocrysts are sparse; contact, stratigraphic and other relationships suggestthat the tuffs formed within a ring dyke or near the vent of a ring-fault system
Quartz-feldspar-porphyritic ash-flow tuffs and breccias, and possible hypabyssal intrusiveequivalents forming ring dykes; feldspar is microperthitic, and amphibole and rare clinopyroxeneoccur as accessory minerals
Sparsely quartz-feldspar-porphyritic and aphyric ash-flow tuff
Sparsely quartz-feldspar-porphyritic ash-flow tuff
Pale reddish brown to light brownish grey, feldspar +/- quartz-porphyritic syenite and granite, andless common equigranular varieties; microperthite is commonly the dominant feldspar, and thematrix commonly contains graphic intergrowths of quartz and feldspar, and accessory magnetite,clinopyroxene and amphibole
Aphyric to sparsely porphyritic, to porphyritic and lithophysae-bearing ash-flow tuffs, ash-flowlapilli-tuffs and breccias; plagioclase is the most common feldspar; sericite, hematite and silicaalteration are common; lithic breccias mainly consist of aphyric fragments in an aphyric ash-flowtuff matrix
Aphyric to quartz-feldspar-porphyritic ash-flow tuff and breccia; breccia is restricted to the northeastoutcrop area and contains subangular to subrounded fragments of aphyric flows and quartz-feldsparporphyry or granite
BURLINGTON GRANODIORITEMainly light grey to greenish grey, medium-grained, hornblende-biotite granodiorite and quartzdiorite; minor related monzonitic and granitic phases
BETTS COVE COMPLEXPillow lava and greenschist
Intrusive Rocks
Upper Volcanic Rocks
Intrusive Rocks
Middle Volcanic Rocks
Lower Volcanic Rocks
LEGEND
7
6d
6c
6b
6a
5
4
3
2
1
Geology by R. R. Miller and A. M. Abdel-Rahman, 1994.
Digital NTS base (12H/9 and 12H/16) used for this map isavailable from Surveys and Mapping Branch, NaturalResources Ottawa.
Approximate magnetic declination, 1989, for centre of 12H/9,
25 13 west, decreasing 7.5 annually; grid north 0 34 eastof true north.
Elevations are in metres above sea level. Contour interval is10 metres.
Universal Transverse Mercator (UTM) Grid Zone 21.
North American Datum 1927.
Copies of this map may be obtained from the GeosciencePublications Section, Geological Survey,Department of Mines and Energy, Government ofNewfoundland and Labrador, P. O. Box 8700, St John’sNewfoundland, Canada, A1B 4J6.
$ � � $ �
Geological cartography by A. H. Paltanavage.
Canada,
and Information
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Bedding (tops known) .........
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SYMBOLS
NOTES:
The purchaser agrees not to provide a digital reproduction orcopy of this product to a third party. Derivative productsshould acknowledge the source of the data.
This project was funded by the Canada-NewfoundlandCooperation Agreement on Mineral Development (1990-1994); project carried by Geological Survey, Department ofNatural Resources, Government of Newfoundland andLabrador.
Open File reports and maps issued by the Geological SurveyDivision of the Newfoundland Department of Mines andEnergy are made available for public use without beingformally edited or peer reviewed, and are based onpreliminary data and evaluation.
DISCLAIMER:
The Geological Survey, a division of the Department of Minesand Energy (the “authors and publishers”), retains the soleright to the original data and information found in any productproduced. The authors and publishers assume no legalliability or responsibility for any alterations, changes ormisrepresentations made by third parties with respect tothese products or the original data. Furthermore, theGeological Survey assumes no liability with respect to digitalreproductions or copies of original products or for derivativeproducts made by third parties. Please consult with theGeological Survey in order to ensure originality andcorrectness of data and/or products.
Recommended citation:Miller, R. R., and Abdel-Rahman, A. M.2003: Geology of the King’s Point Complex (parts of NTS12H/9 and 12H/16), Newfoundland. Scale 1:50 000.Newfoundland and Labrador Department of Mines andEnergy, Geological Survey, Map 2003-23, Open File012H/1678.
MAP 2003-23OPEN FILE 012H/1678
GEOLOGY OF THE KING’S POINT COMPLEX
(parts of NTS 12H/9 and 12H/16), NEWFOUNDLAND
0 1 2 3 4 5
kilometres
Scale 1:50 000
GOVERNMENT OFNEWFOUNDLANDAND LABRADOR
Department ofMines and Energy
Geological Survey