1
Ql Qag Qls Tcb Ttp Ktmc Kg _l Zsc Ybq Ys Ym Ycq Ywcu Yt Ysr Yr Ybk Ymsu Ymsl Yhm Ysh Yss Yw Ye Deer Trail Group Belt Supergroup Windermere Group Eocene TERTIARY CRETACEOUS JURASSIC CAMBRIAN LATE PROTEROZOIC MIDDLE PROTEROZOIC CENOZOIC MESOZOIC PALEOZOIC QUATERNARY Glacial and alluvial deposits (Quaternary) Landslide deposits (Quaternary) Glacial-lacustrine deposits (Quaternary) Chlorite breccia and cataclastic rocks associated with the Newport Fault zone (Eocene) Quartz monzonite of Trapper Peak (Eocene) Priest River complex Granodiorite of Trapper Creek (Cretaceous) Mixed granitic and metamorphic rocks of Lookout Mountain (Cretaceous) Garnet-bearing granodiorite (Cretaceous) Granodiorite of Caribou Creek (Cretaceous) Mafic granodiorite of Marsh Lake (Cretaceous) Granodiorite of Search Lake (Cretaceous) Mafic granodiorite of Lucky Creek (Cretaceous) Monzogranite of Klootch Mountain (Cretaceous) Two-mica granitic rocks of Horton Creek (Cretaceous) Mafic granodiorite of Cavanaugh Bay (Cretaceous) Mixed granitic rocks of Camels Prairie (Cretaceous) Mixed granitic and metamorphic rocks of Soldier Creek (Cretaceous) Monzogranite of Shorty Peak (Cretaceous) Mixed two-mica rocks of Ball Creek (Cretaceous) Granodiorite of Falls Creek (Cretaceous) Tonalite of Snow Peak (Cretaceous) Granitic and metamorphic rocks, undivided (Cretaceous) Monzogranite of Hunt Creek (Cretaceous) Monzonite of Long Canyon (Mesozoic) Prichard Formation, metamorphosed (Middle Proterozoic) Monzogranite of Granite Pass (Cretaceous) Two-mica monzogranite or granodiorite of Twenty Mile Creek (Cretaceous) Monzogranite of Tango Creek (Cretaceous) Monzogranite of Hungry Mountain (Cretaceous) Monzogranite of Gleason Mountain (Cretaceous) Granitic rocks, undivided (Cretaceous) Monzonite of Wall Mountain (Mesozoic) Granodiorite of Bonners Ferry (Cretaceous) Granodiorite of Hall Mountain (Cretaceous) Boulder Mountain pluton Granodiorite of Reeder Creek (Cretaceous) Porphyritic, muscovite-bearing, biotite granodiorite Galena Point Granodiorite (Cretaceous) Granodiorite of Ruby Creek (Cretaceous) Granodiorite of Copeland (Cretaceous) Granodiorite of Priest Lake (Cretaceous) Granodiorite of Kelly Pass (Cretaceous) Granodiorite of Road V-78 (Cretaceous) Tonalite of Continental Mountain (Jurassic) Trondhjemite of Continental Mountain (Jurassic) Dolomite (Cambrian) Windermere Group (Late Proterozoic) Shedroof Conglomerate Mafic intrusive rocks (Late or Middle Proterozoic) Deer Trail Group (Middle Proterozoic) Buffalo Hump Formation Stensgar Dolomite McHale Slate Wabash Detroit Formation and Chamokane Creek Formation, undivided Quartzite unit Togo Formation Belt Supergroup (Middle Proterozoic) Mount Shields Formation Upper part Lower part CORRELATION OF MAP UNITS LIST OF MAP UNITS Qls Tcb Yppm Kgp Ktc Kh Kgm Kbf Khbm Krc Krcp Kcu Kco Kru Kv Kkp Kgpl Kptc Kplm Kpgb Kpcc Kpml Kplc Kpkm Kpcb Kpcp Kpms Kpsh Kpbc Kpfc Kpsp Kpdc Kph Kphc Jcmt Jcm }w ZYmi }pl Pleistocene Ttp Classification after Streckeisen (1976) 5 Quartz Quartz Alkali Feldspar Plagioclase Tonalite Granodiorite Quartz Monzonite Monzonite Monzodiorite Quartz Monzodiorite Quartz Syenite Quartz Syenite 20 90 65 35 10 Monzogranite Syenogranite Diorite Monzogranite of Granite Pass Monzogranite of Hungry Mountain Monzogranite of Tango Creek Galena Point Granodiorite Granodiorite of Hall Mountain Granodiorite of Reeder Creek Monzogranite of Gleason Mountain Kg Kgp Kco Kru Kv Kkp Kgpl Ktmc Ktc Kh Kbf Khbm Krcp Krc Kptc Kplm Kpgb Kpcc Kpml Kplc Kpkm Kph Kpcb Kpcp Kpms Kpsh }pl Jcmt Jcm }w Granodiorite of Ruby Creek Granodiorite of Priest Lake Granodiorite of Caribou Creek Granodiorite of Search Lake Mafic granodiorite of Lucky Creek Monzogranite of Shorty Peak Mixed two-mica rocks of Ball Creek Monzogranite of Klootch Mountain Monzogranite of Hunt Creek Tonalite of Continental Mountain Trondhjemite of Continental Mountain Monzonite of Long Canyon Kcu Kgm Kpsl Kpsl Yp Ymi Yp Ypf Granitic and metamorphic rocks of the Priest River complex* * The Priest River complex in the Bonners Ferry quadrangle is an Eocene structure made up of at least 19 lithodemes that range in age from Cretaceous to Triassic(?) and includes one highly metamorphosed Proterozoic unit. All of the units yield Eocene conventional potassium-argon biotite ages. The units shown in the connected boxes are probably not distinct sequentially emplaced plutons but rather represent one or more, inhomogeneous, composite intrusive masses that are variably intermixed with metamorphic rocks. All of the granitic units are probably Mesozoic in age, and the intermixed metamorphic rocks are derived from the Belt Supergroup or from sills that intrude it. The arrangement of the boxes, either by column or row, has little petrogenetic significance, but corresponds to the sequence in List of Map Units, proceeding by row from left to right. The disconnected boxes are positioned in the Correlation of Map Units to reflect the known or presumed age of their respective protoliths, and are described in the order of their position. Qag Ql Figure 3. Modal compositions for selected granitic units in Bonners Ferry quadrangle. ? ? ? ? Kpbc Kpfc Kpsp Kpdc Kphc _l Zsc Ybq Ys Ym Ycq Ywcu Yt ZYmi Ymsu Ymsl Ysr Yr Ybk Yss Yw Ye Ymi Yp Ypf Contact—Generally located within ±25 m, except within Priest River complex where many contacts are highly gradational and subject to interpretive placement Faults High-angle—Includes normal, reverse, and multiply reactivated faults. Solid where located within ±25 m; dashed where located within ±50 m; dotted where concealed; queried where location uncertain. Bar and ball on downthrown side. Low-angle normal (detachment)—Solid where located within ±25 m; dashed where located within ±50 m; dotted where concealed Folds Anticline—Arrow indicates direction of plunge Syncline—Arrow indicates direction of plunge Strike and dip of bedding* Inclined Vertical Overturned Strike and dip of primary igneous features* Foliation Inclined Vertical Strike and dip of secondary foliation, igneous rocks Strike and dip of foliation, metamorphic* Inclined Vertical Bearing and plunge of lineations* Stretching Primary igneous Minor fold axes *Symbols may be used in combination ? 48 30' Figure 2. Index map of Bonners Ferry 30' x 60' quadrangle showing geographic and cultural features referred to in the text. Also shown are the approximate areas predominently underlain by (1) Deer Trail Group and Windermere Group, tan; (2) eastern Priest River complex, gray; and (3) Belt Supergroup, green. Town. Mountain peak. Specific feature. COPELAND EASTPORT BONNERS MORAVIA NAPLES LEONIA Wall Mtn Kelly Pass Lookout Mtn Snow Peak Camels Prairie NORDMAN Crossport Shorty Pk IDAHO MONTANA Ta ngo Cr e e k R e e d e r C re e k R u b y C r e e k T r a p p e r C r e e k C ari b o u C r e e k Priest Lake H o r t o n C reek H u nt Creek So l d i er Cr e e k L u cky C r ee k T w e n t y m i l e C r e e k F a ll C r e e k K o ot e n a i R i v e r DEEP CREEK M o y i e R i v e r C A B I N E T MO U N T A INS B a ll Creek L o n g C a n y o n C r e e k V-78 Road U p p e r P r i e s t R iv e r CAVANAUGH BAY Upper Priest Lake Continental Mtn Marsh Lake Trapper Pk Search Lake Boulder Mtn Klootch Mtn MOYIE SPRINGS FERRY Approximate Purcell Trench boundary of 117 00' 48 30' 116 00' 116 00' KILOMETERS 0 10 20 25 49 00' 49 00' 117 00' Slate Ridge McGinty Ridge Dodge Pk 49 48 118 ? ? ? S T. M A R Y F A U L T ? ? ? ? ? ? ? K O O T E N A Y A R C P U R C E L L T R E N C H F A U L T P U R C E L L T R E N C H N E W P O R T F A U L T J U M P O F F J O E F A U L T JOJ HOPE FAULT MOYIE NEWPORT(?) ID AH O FAULT UNITED STATES CANADA BRITISH COLUMBIA WASHINGTON ? P R I E S T R I V E R C OM P L E X P R I E S T R I V E R C O M P L E X 116 H U C K L E B E R R Y R AN G E F A U L T HRF Q u e s n e llia 0 20 40 Kilometers Granitic rocks (Cretaceous and Jurassic) Priest River complex (Cretaceous to Middle Proterozic) Rocks of Quesnellia Terrane (Jurassic to Carboniferous) Rocks west of Huckleberry Range Fault Deer Trail Group, Windermere Group, and Paleozoic rocks (Ordovician to Middle Proterozoic) Belt Supergroup and Paleozoic rocks (Mississip- pian to Middle Proterozoic) Mylonitized rocks C N 48 30' 117 Granitic rocks (Tertiary) Figure 1. Simplified geologic map showing relations of major structures in Bonners Ferry quadrangle to other major structures in the region. Bonners Ferry quadrangle outlined in green. HRF, Huckleberry Range Fault; JOJ, Jumpoff Joe Fault; N, Newport; C, Chewelah. Town. JOJ(?) AND FAULTS ID A H O M ON TA N A û û û û û û C l a r k F o r k - E a s t p o r t S e q ue n c e of B e lt S u p e rgro u p N e w p o r t S e q u e n c e o f B e l t S u p e r g r o up NEWPORT(?) FAULT JOJ FAULT Argillite of Half Moon Lake Shepard Formation Snowslip Formation Wallace Formation Empire Formation St Regis Formation Revett Formation Burke Formation Mafic sills Prichard Formation U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY MISCELLANEOUS FIELD STUDIES MAP MF-2426 Pamphlet accompanies map Geologic Map of the Bonners Ferry 30' x 60' Quadrangle, Idaho and Montana By Fred K. Miller and Russell F. Burmester Digital preparation by Pamela M. Cossette and Pamela D. Derkey 2003 0 1 1 2 3 4 5 6 7 8 9 10 11 KILOMETERS 0 1 1 2 3 4 5 6 7 MILES CONTOUR INTERVAL 50 METERS SCALE 1:100,000 N MN 17° Declination at center of map, 2003 Base from U.S. Geological Survey Bonners Ferry 1:100,000 scale map, 1983; U.S. Geological Survey Bonners Ferry East and West digital line graphs (DLG), 1983 Universal Transverse Mercator projection, zone 11 Geology mapped by Fred K. Miller, 1977-1993; Russell F. Burmester, 1980-1988 Edited by Jane S. Ciener and Jan L. Zigler Manuscript approved for publication November 12, 2003 IDAHO LOCATION MAP Any use of trade, firm, or product names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. This map was printed on an electronic plotter directly from digital files. Dimensional calibration may vary between electronic plotters and between X and Y directions on the same plotter, and paper may change size due to atmospheric conditions; therefore, scale and proportions may not be true on plots of this map. For sale by U.S. Geological Survey, Information Services, Box 25286, Federal Center, Denver, CO 80225, 1-888-ASK-USGS Digital files available on World Wide Web at http://geopubs.wr.usgs.gov/map-mf/mf2426 Granitic and metamorphic rocks of the Priest River complex End of granitic and metamorphic rocks of the Priest River complex Yppm Yhm Ysh
