1
Map Symbols Approximate cirque headwall; hatched lines show approximate upper limit of cirque basin; (not a deposit) 15 22 12 5 28 40 80 M I C IMC IMC E Geologic Units Qa – Holocene alluvium Upper Plate Units Bx – Undifferentiated bedrock Qgt1 – Glacial till and outwash of Sagavernirktok or possibly older glaciation Qgt2 – Glacial till and outwash of Itkillik I glaciation Qgt3 – Glacial till and outwash of Itkillik II glaciation Qgt4 – Late Wisconsin to Holocene glacial till Qrg – Rock glacier deposits Ql – Lacustrine (Lake) deposits Qsl – Solofluction lobe deposits Qca – Colluvial and alluvial deposits, undifferentiated Qct – Colluvium and talus deposits Qat – Alluvial terrace deposits Qht – Placer mine tailings Qaf – Alluvial fan deposit Dlf – Light gray, tan weathered, K-spar-rich, felsic meta-igneous schist; possibly metamorphosed felsic tuff Dup – Gray, fine to medium grained, carbonaceous, fissile, platey phyllite Lower Plate Units Dlq – Mica quartzose schist; locally quartzite Dlc – Chlorite-rich, albite bearing, calcareous, tuffaceous schist Dlb – Dark gray to black, finely laminated, fine grained, quartz-mica, meta-mudstone schist UNCONSOLIDATED DEPOSITS BEDROCK DEPOSITS Mz Pzg – Meta-igneous greenstone Mz Pza – Mafic meta-volcanic agglomerate and flows Dum – Quartz chlorite, muscovite schist; includes meta-turbitite schist section as observed in unit Dut Dut – Coarse to fine grained, rhythmically layered, meta-turbidite schist and phyllite Dul – Light gray, rounded, locally massive, calcareous meta-sandstone and quartz-mica schist Dus – Quartz rich, blocky, muscovite-schist in eastern portion of map area Qcl – Colluvial landslide block Mines and prospects Mz Pzg – Meta-igneous greenstone L M C IMC P IMC Strike and dip of foliation Plunge and axis of isoclinal fold (f1), mineral lineation (ML), crenulation (C), or pencil structure (P) Direction and plunge of overturned syncline High angle fault; Arrows show direction of movement; U=upthrown side D=downthrown side; Headed arrow shows direction of dip with dip angle where available. Thrust fault; teeth are directed into upper plate Lateral and Terminal limit of glaciation; (not a deposit) Ice marginal meltwater channel showing direction of flow Strike and dip of cleavage Strike and dip of joints Location of glacial erratic Direction and plunge of syncline 80 N M 28.5° Geologic Map of the Chandalar Mining District, Brooks Range, Northern Alaska by Thomas K. Bundtzen and Gregory M. Laird Prepared for Little Squaw Gold Mining Company Pacific Rim Geological Consulting, Inc., Fairbanks, Alaska Sheet 1 SCALE 1:20,000 DATUM MEAN SEA LEVEL CONTOUR INTERVAL 100 FEET MILES KILOMETERS 0 1 2 3 4 0 1 2 3 4 5 6 TOPOGRAPHIC BASE FROM THE USGS CHANDALAR C-3 1:63,360 SCALE QUADRANGLE Qa Qa Qa Qa Qa Qa Qht Qht Qa Qa Qht Qht Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qht Qht a Qa Q Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qht Qht Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qht Qht Qht Qht Qa Qa Qa Qa Qht Qht Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Bx Bx Bx Bx Bx Bx Qgt3? Qgt3? Qgt3 Qgt3 Qgt2 Qgt2 Qgt2 Qgt2 Qgt2 Qgt2 Qct Qct Qct Qct Qct Qct Qgt2 Qgt2 Qgt2 Qgt2 Qgt2 Qgt2 Dus Dus Mz Pzg Mz Pzg Dlb Dlb Dlb Dlb Dlb Dlb Dlb Dlb Mz Pzg Mz Pzg Mz Pzg Mz Pzg Qgt3? Qgt3? Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Dus Dus Dus Dus Dus Dus Dus Dus Dus Dus Dus Dus Dus Dus Dlb Dlb Qaf Qaf Qct Qct Qaf Qaf Qct Qct Qgt3? Qgt3? Qgt3? Qgt3? Qct Qct Qat Qat Qat Qat Qat Qat Qaf Qaf Qaf Qaf Qaf Qaf Qaf Qaf Qct Qct Qct Qct Qct Qct Dus Dus Dus Dus Dus Dus Qaf Qaf Qaf Qaf Qct Qct Qct Qct Dlb Dlb Dlb Dlb Dlb Dlb Dlb Dlb Dlb Dlb Dlb Dlb Dlb Dlb Mz Pzg Mz Pzg Mz Pzg Mz Pzg Mz Pzg Mz Pzg Qgt1? Qgt1? Dum? Dum? Qgt3 Qgt3 Qct Qct Dum Dum Qaf Qaf Qaf Qaf Qct Qct Qct Qct Dus Dus Qct Qct Qgt3 Qgt3 Qgt3 Qgt3 g Qrg Qr Dum Dum Dup Dup Dut Dut Dut Dut Qht Qht Qht Qht Qht Qht Qgt2 Qgt2 Qat Qat Qgt3 Qgt3 Qgt2 Qgt2 Qgt2 Qgt2 Qat Qat Qat Qat Qat Qat Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Bx Bx Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qat Qat Qat Qat Qaf Qaf Qcl Qcl Qaf Qaf Qaf Qaf Qgt2 Qgt2 Qgt2 Qgt2 Qgt2 Qgt2 Qat Qat Qat Qat Qgt1 Qgt1 Qct Qct Dlb Dlb Dlb Dlb Dlb Dlb Dlb Dlb Dlb Dlb Mz Pzg Mz Pzg Mz Pzg Mz Pzg Mz Pzg Mz Pzg Dlf Dlf Dlc Dlc Dlc Dlc Dlc Dlc Dlb Dlb Qct Qct Dlf Dlf Mz Pzg Mz Pzg Mz Pzg Mz Pzg Mz zg P Mz zg P Dlq Dlq Qsl Qsl Qsl Qsl Dut Dut Dut Dut Dl u Dl u Mz Pzg Mz Pzg Qct Qct Qct Qct c Qt c Qt Dlb Dlb Dlb Dlb Qct Qct Dut Dut Dut Dut Dut Dut Dlc Dlc Dlq Dlq Mz Pzg Mz Pzg Dut Dut Dut Dut Dut Dut Dut Dut Dul Dul Dum Dum Dul Dul Dum Dum Dum Dum Dum Dum Dul Dul Qct Qct Qct Qct Qct Qct Qct Qct Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qct Qct Dut Dut Dut Dut Dup Dup Dup Dup Qrg Qrg Qcl Qcl Qct Qct Dul Dul Dut Dut Dum Dum Dum Dum Dum Dum Dum Dum Dum Dum Dup Dup Dup Dup Dup Dup Dup Dup Dus Dus Qat Qat Qca Qca Qca Qca Qca Qca Qca Qca Qca Qca Qca Qca Qaf Qaf Qct Qct Qct Qct Dum Dum Dlb Dlb Qat Qat Mz Pzg Mz Pzg Qht Qht Qht Qht Dut Dut Dup Dup Qct Qct Qgt3 Qgt3 Qct Qct Qct Qct Qgt3 Qgt3 g Q t3 g Q t3 Qgt2 Qgt2 Qct Qct Ql Ql Ql Ql Ql Ql Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Ql Ql Ql Ql Ql Ql Qgt3 Qgt3 Qgt3 Qgt3 Qaf Qaf Qgt2 Qgt2 Qaf Qaf Qaf Qaf Qaf Qaf Qaf Qaf Qaf Qaf Qaf Qaf Qaf Qaf Qgt2 Qgt2 Qgt2 Qgt2 Qgt3 Qgt3 Qgt3 Qgt3 Mz Pzg Mz Pzg Mz Pzg Mz Pzg Qct Qct Qgt1 Qgt1 Dlb Dlb Qgt1 Qgt1 Qgt1 Qgt1 Qgt1 Qgt1 Dlb Dlb Dlb Dlb Dut Dut Dum Dum Dum Dum Qgt4 Qgt4 Qgt3 Qgt3 Qct Qct Qgt2 Qgt2 Qgt2 Qgt2 Qgt2 Qgt2 Qgt3 Qgt3 Qct Qct Qct Qct Qgt3 Qgt3 Dum Dum Dum Dum Dum Dum Dum Dum Dum Dum Dul Dul Dul Dul Dul Dul Dul Dul Dut Dut Dut Dut t Dut Du ul Dul D Dul Dul Dul Dul Dul Dul Dup Dup u Dp u Dp Dup Dup Qgt3? Qgt3? Qgt3? Qgt3? Dum Dum Dum Dum Dum Dum Dum Dum Dum Dum Dum Dum Mz Pzg Mz Pzg Dlb Dlb Dlb Dlb Qca Qca Dlb Dlb Qca Qca Qca Qca Qca Qca Qaf Qaf Mz Pzg Mz Pzg Qca Qca Qca Qca Qca Qca Qca Qca Dlb Dlb Dlb Dlb Dlb Dlb Dum Dum Dup Dup Dlb Dlb Dlb Dlb Qgt1 Qgt1 Qct Qct Dut Dut Dlb Dlb Dlb Dlb Qgt1 Qgt1 Qgt1 Qgt1 Qgt1 Qgt1 Qgt1 Qgt1 Qgt2 Qgt2 Qgt2 Qgt2 Qct Qct Dul Dul Dlb Dlb Dlb Dlb Qgt1 Qgt1 Dum Dum Dum Dum Dum Dum Dum Dum Qct Qct Qct Qct Qgt1 Qgt1 Qrg Qrg Dlb Dlb Mz Pza Mz Pza Qgt1 Qgt1 Qgt3 Qgt3 Qgt2 Qgt2 Dlb Dlb Dlb Dlb Qgt1 Qgt1 Dlb Dlb Dlb Dlb Dlb Dlb Qct Qct Qct Qct Qgt2 Qgt2 Qgt2 Qgt2 Dlq Dlq Ql Ql Qa Qa Dum Dum Qa Qa Ql Ql Qgt2 Qgt2 Qgt1? Qgt1? Qct Qct Qct Qct Qca Qca Qca Qca Ql Ql Qgt2 Qgt2 Dlb Dlb Dlq Dlq Dlb Dlb Dlb Dlb Qgt2 Qgt2 Qa Qa Qa Qa Ql Ql Qgt2 Qgt2 Ql Ql Dlb Dlb Qgt2 Qgt2 Ql Ql Dlb Dlb Dlb Dlb Mz Pza Mz Pza Mz Pza Mz Pza Ql Ql Ql Ql Qgt2 Qgt2 Dlb Dlb Mz Pza Mz Pza Mz z Pa Mz z Pa Qa Qa Qgt2 Qgt2 Qca Qca Qca Qca Qgt2 Qgt2 Dlb? Dlb? Qa Qa Qa Qa Qgt3 Qgt3 Mz Pza Mz Pza Dlb Dlb Dlb Dlb Qgt1 Qgt1 Qgt2 Qgt2 Qgt2 Qgt2 Qgt1 Qgt1 Qa Qa Qht Qht Qa Qa Qa Qht Qa Qht Qa Qa Qa Qa Qa Qa Qa Qa Qa Qht a Q Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qht Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qht Qht Qa Qa Qht Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Qa Bx Bx Bx Qgt3? Qgt3 Qgt2 Qgt2 Qgt2 Qct Qct Qct Qgt2 Qgt2 Qgt2 Dus Mz Pzg Dlb Dlb Dlb Dlb Mz Pzg Mz Pzg Qgt3? Qgt3 Qgt3 Qgt3 Qgt3 Dus Dus Dus Dus Dus Dus Dus Dlb Qaf Qct Qaf Qct Qgt3? Qgt3? Qct Qat Qat Qat Qaf Qaf Qaf Qaf Qct Qct Qct Dus Dus Dus Qaf Qaf Qct Qct Dlb Dlb Dlb Dlb Dlb Dlb Dlb Mz Pzg Mz Pzg Mz Pzg Qgt1? Dum? Qgt3 Qct Dum Qaf Qaf Qct Qct Dus Qct Qgt3 Qgt3 g Qr Dum Dup Dut Dut Qht Qht Qht Qgt2 Qat Qgt3 Qgt2 Qgt2 Qat Qat Qat Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Qgt3 Bx Qgt3 Qgt3 Qgt3 Qat Qat Qaf Qcl Qaf Qaf Qgt2 Qgt2 Qgt2 Qat Qat Qgt1 Qct Dlb Dlb Dlb Dlb Dlb Mz Pzg Mz Pzg Mz Pzg Dlf Dlc Dlc Dlc Dlb Qct Dlf Mz Pzg Mz Pzg Mz zg P Dlq Qsl Qsl Dut Dut Dl u Mz Pzg Qct Qct c Qt Dlb Dlb Qct Dut Dut Dut Dlc Dlq Mz Pzg Dut Dut Dut Dut Dul Dum Dul Dum Dum Dum Dul Qct Qct Qct Qct Qgt3 Qgt3 Qgt3 Qgt3 Qct Dut Dut Dup Dup Qrg Qcl Qct Dul Dut Dum Dum Dum Dum Dum Dup Dup Dup Dup Dus Qat Qca Qca Qca Qca Qca Qca Qaf Qct Qct Dum Dlb Qat Mz Pzg Qht Qht Dut Dup Qct Qgt3 Qct Qct Qgt3 g Q t3 Qgt2 Qct Ql Ql Ql Qgt3 Qgt3 Qgt3 Ql Ql Ql Qgt3 Qgt3 Qaf Qgt2 Qaf Qaf Qaf Qaf Qaf Qaf Qaf Qgt2 Qgt2 Qgt3 Qgt3 Mz Pzg Mz Pzg Qct Qgt1 Dlb Qgt1 Qgt1 Qgt1 Dlb Dlb Dut Dum Dum Qgt4 Qgt3 Qct Qgt2 Qgt2 Qgt2 Qgt3 Qct Qct Qgt3 Dum Dum Dum Dum Dum Dul Dul Dul Dul Dut Dut t Du ul D Dul Dul Dul Dup u Dp Dup Qgt3? Qgt3? Dum Dum Dum Dum Dum Dum Mz Pzg Dlb Dlb Qca Dlb Qca Qca Qca Qaf Mz Pzg Qca Qca Qca Qca Dlb Dlb Dlb Dum Dup Dlb Dlb Qgt1 Qct Dut Dlb Dlb Qgt1 Qgt1 Qgt1 Qgt1 Qgt2 Qgt2 Qct Dul Dlb Dlb Qgt1 Dum Dum Dum Dum Qct Qct Qgt1 Qrg Dlb Mz Pza Qgt1 Qgt3 Qgt2 Dlb Dlb Qgt1 Dlb Dlb Dlb Qct Qct Qgt2 Qgt2 Dlq Ql Qa Dum Qa Ql Qgt2 Qgt1? Qct Qct Qca Qca Ql Qgt2 Dlb Dlq Dlb Dlb Qgt2 Qa Qa Ql Qgt2 Ql Dlb Qgt2 Ql Dlb Dlb Mz Pza Mz Pza Ql Ql Qgt2 Dlb Mz Pza Mz z Pa Qa Qgt2 Qca Qca Qgt2 Dlb? Qa Qa Qgt3 Mz Pza Dlb Dlb Qgt1 Qgt2 Qgt2 Qgt1 Qa Qht Dl u Dl u Dl u zg Mz Pzg Mz Pzg Mz P Dl u Dl u Dl u Dul Dul Dul zg Mz Pzg Mz Pzg Mz P Qct Qct Qct Dul Dul Dul Dum Dum Dum Dlf Dlf Dlf Pi r onee E E E E E E Big Quartz Veins Big Quartz Veins Big Quartz Veins Boulder Creek Veins Boulder Creek Veins Boulder Creek Veins Tobin Creek Placer Deposit Tobin Creek Placer Deposit Tobin Creek Placer Deposit Tobin Creek Mill Tobin Creek Mill Tobin Creek Mill Woodchuck Creek Woodchuck Creek Woodchuck Creek Wod chuck o Wod chuck o Wod chuck o Fault Fault Fault McNett Prospect McNett Prospect McNett Prospect Fut al Fut al Fut al I nterp r e te d E xt en sio n L itt l e Sq uaw F au lt I nterp r e te d E xt en sio n L itt l e Sq uaw F au lt I nterp r e te d E xt en sio n L itt l e Sq uaw F au lt Kelty Prospect Kelty Prospect Kelty Prospect Mercury Prospect Mercury Prospect Mercury Prospect Caribou Gulch Prospect Caribou Gulch Prospect Caribou Gulch Prospect Caribou Gulch South Caribou Gulch South Caribou Gulch South Caribou Gulch Caribou Gulch Caribou Gulch Mikado Gold Mine Mikado Gold Mine Mikado Gold Mine ul Fa t ul Fa t ul Fa t Mk i ado Mk i ado Mk i ado Big Creek Placer Deposit Big Creek Placer Deposit Big Creek Placer Deposit St. Mary’s Creek St. Mary’s Creek St. Mary’s Creek Kiska/ Tonopah Kiska/ Tonopah Kiska/ Tonopah ? ? Summit Summit Summit Fault Fault Fault Sse ytm Sse ytm Sse ytm Big Creek Bowl Big Creek Bowl Big Creek Bowl Ratchet Ridge Prospect Ratchet Ridge Prospect Ratchet Ridge Prospect Summit Gold Mine Summit Gold Mine Summit Gold Mine Eneveloe Gold Mine Eneveloe Gold Mine Eneveloe Gold Mine Summit Gulch Summit Gulch Summit Gulch Robbin’s Gulch Robbin’s Gulch Robbin’s Gulch Little Squaw Gold Mine Little Squaw Gold Mine Little Squaw Gold Mine Gold Gulch Gold Gulch Gold Gulch East Prospector East Prospector East Prospector Grubstake Grubstake Grubstake Mello Bench Placer Deposit Mello Bench Placer Deposit Mello Bench Placer Deposit Spring Spring e Cre k e Cre k Spring e Cre k Pioneer Prospect Pioneer Prospect Pioneer Prospect Pioneer Pioneer Pioneer Fault Fault Fault Crystal Prospect Crystal Prospect Crystal Prospect Uranus Uranus Uranus Aurora/ Uranus Gulch Aurora/ Uranus Gulch Aurora/ Uranus Gulch Nugget Creek Nugget Creek Nugget Creek North Star Vein North Star Vein North Star Vein Pallasgren Prospect Pallasgren Prospect Pallasgren Prospect Drumlummon Drumlummon Drumlummon Pedro Gulch Pedro Gulch Pedro Gulch Interpreted Interpreted Interpreted E e n xt nsio E e n xt nsio E e n xt nsio Mikado Mikado Mikado Fault Fault Fault n Extension Extension Extensio Mc ellan L Mc ellan L Mc ellan L Creek Creek Creek ault Fault Fault F ? ? ? ? ? ? McL la el n McL la el n McL la el n Creek Creek Creek Fault Fault Fault p es n Inter reted Ext n io p es n Inter reted Ext n io p es n Inter reted Ext n io Pi nee Fu o r a lt Pi nee Fu o r a lt Pi nee Fu o r a lt MLl c e lan MLl c e lan MLl c e lan Creek Creek Creek aul F t aul F t aul F t Lit l te Lit l te Lit l te ? ? ? ? ? ? ? ? ? ? Little Little Little q w S ua q w S ua q w S ua t Fault Fault Faul Int p eted er r Int p eted er r Int p eted er r xten i n E so xten i n E so xten i n E so ka o Mi d ka o Mi d ka o Mi d Fault Fault Fault Zone Zone Zone E E E E E E D U U D D U U D Geologic mapping by T.K. Bundtzen and G.M. Laird, June 28-July 19 and September 3-5, 2006 Grubstake East Grubstake East Grubstake East Tonopah Deposit Tonopah Deposit Tonopah Deposit Sm i u mt Sm i u mt Sm i u mt Fault Fault Fault Sse ytm Sse ytm Sse ytm Mikado Deposit- Northwest Mikado Deposit- Northwest Mikado Deposit– Northwest C’ C’ C B’ B’ B A A’ A’ C’ C B’ B A A’ Qgt4 Qgt4 Qgt3 Qgt3 Qgt2 Qgt2 Qgt1 Qgt1 Qa Qa Qht Qht Qaf Qaf Qct Qct Qat Qat Qca Qca Qcl Qcl Ql Ql Qrg Qrg Mz Pzg Mz Pzg Mz Pzg Mz Pzg Mz Pza Mz Pza Dlb Dlb Dlq Dlq Dlf Dlf Dlc Dlc Dus Dus Dul Dul Dum Dum Dut Dut Dup Dup Qgt4 Qgt3 Qgt2 Qgt1 Qa Qht Qaf Qct Qat Qca Qcl Ql Qrg Mz Pzg Mz Pzg Mz Pza Dlb Dlq Dlf Dlc Dus Dul Dum Dut Dup utr r Q a e na y Holocene Wisconsin Pre-Wisconsin o D e v nian t o T ? r i as si c o Dev n ia n ? Correlation of Map Units Digital Cartography by Kelly Digital Design, 2006/2007 3380’ 2400’ Dlb Mz Pzg Dlb Dum Pioneer Fault Dut Dut Dul Dul Dum McNett-Eneveloe Vein Fault System Dum Dul Dut Dut Mikado Vein Fault Zone Dup b Dl Dum Dlb McNett Peak 5549’ Dum Dlb Dlb Mz Pzg Dlb 5000’ 3000’ 1000’ 5000’ 3000’ 1000’ A’ A Extension of Little Squaw Fault Zone Dut B B’ Dlb Mz Pzg Dlb Dul Dum Dlb Dlb Dum Dum Dul Dlb Dlb Dum Dup Dum Mz Pzg Dlb Dlb Pioneer (Vein) Fault Uranus Shear Head of Little Squaw Creek Ratchet Ridge Summit Vein Fault Kiska Vein Fault l Db Dum Mikado Fault Zone 5000’ 3000’ 1000’ 5000’ 3000’ 1000’ Dlb Little Squaw/ Crystal Fault Zone Dum? t Du u Dp t Du Dul Dut Dlb c Dl Dum Dum Dul Dut Mz z Pg t Du z z M Pg Dut Dl u t Du Dlb Mz Pzg Dlc Dlf Dlc Interpreted Extension of Mikado Fault Zone Interpreted Extension of Pioneer Fault Dus Dlb Dus Dus Dus Dus Dlb 4000’ 3000’ 1000’ 4000’ 3000’ 1000’ C’ C Location of Map Area 27 27 27 25 25 25 3 3 36 36 36 26 26 26 20 20 20 22 22 22 28 28 28 26 26 26 22 22 22 18 18 18 35 35 35 22 22 22 75 75 75 30 30 30 80 80 80 80 80 80 148° 00’ 67° 30’ 148° 20’ 67° 35’ 440000m 445000m 450000m 455000m 7500000m 7495000m 7490000m 440000m 445000m 450000m 455000m 7500000m 7495000m 7490000m

Geologic Map of the Chandalar Mining District, Brooks Range, … · 2019-04-21 · Map Symbols Approximate cirque headwall; hatched lines show approximate upper limit of cirque basin;

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Page 1: Geologic Map of the Chandalar Mining District, Brooks Range, … · 2019-04-21 · Map Symbols Approximate cirque headwall; hatched lines show approximate upper limit of cirque basin;

Map Symbols

Approximate cirque headwall; hatched lines show approximate upper limit of cirque basin; (not a deposit)

15

22

125

28

40

80

MI C

IMC

IMC

E

Geologic Units

Qa – Holocene alluvium

Upper Plate Units

Bx – Undifferentiated bedrock

Qgt1 – Glacial till and outwash of Sagavernirktok or possibly older glaciation

Qgt2 – Glacial till and outwash of Itkillik I glaciation

Qgt3 – Glacial till and outwash of Itkillik II glaciation

Qgt4 – Late Wisconsin to Holocene glacial till

Qrg – Rock glacier deposits

Ql – Lacustrine (Lake) deposits

Qsl – Solofluction lobe deposits

Qca – Colluvial and alluvial deposits, undifferentiated

Qct – Colluvium and talus deposits

Qat – Alluvial terrace deposits

Qht – Placer mine tailings

Qaf – Alluvial fan deposit

Dlf – Light gray, tan weathered, K-spar-rich, felsic meta-igneous schist; possibly metamorphosed felsic tuff

Dup – Gray, fine to medium grained, carbonaceous, fissile, platey phyllite

Lower Plate Units

Dlq – Mica quartzose schist; locally quartzite

Dlc – Chlorite-rich, albite bearing, calcareous, tuffaceous schist

Dlb – Dark gray to black, finely laminated, fine grained, quartz-mica, meta-mudstone schist

UNCONSOLIDATED DEPOSITS

BEDROCK DEPOSITS

Mz Pzg – Meta-igneous greenstone

Mz Pza – Mafic meta-volcanic agglomerate and flows

Dum – Quartz chlorite, muscovite schist; includes meta-turbitite schist section as observed in unit Dut

Dut – Coarse to fine grained, rhythmically layered, meta-turbidite schist and phyllite

Dul – Light gray, rounded, locally massive, calcareous meta-sandstone and quartz-mica schist

Dus – Quartz rich, blocky, muscovite-schist in eastern portion of map areaQcl – Colluvial landslide block

Mines and prospects

Mz Pzg – Meta-igneous greenstone

LM

CIMC

P

IMC

Strike and dip of foliation

Plunge and axis of isoclinal fold (f1), mineral lineation (ML), crenulation (C), or pencil structure (P)

Direction and plunge of overturned syncline

High angle fault; Arrows show direction of movement; U=upthrown side D=downthrown side; Headed arrowshows direction of dip with dip angle where available.

Thrust fault; teeth are directed into upper plate

Lateral and Terminal limit of glaciation; (not a deposit)

Ice marginal meltwater channel showing direction of flow

Strike and dip of cleavage

Strike and dip of joints

Location of glacial erratic

Direction and plunge of syncline

80

N

M

28.5°

Geologic Map of the Chandalar Mining

District, Brooks Range, Northern Alaska

by Thomas K. Bundtzen and Gregory M. Laird

Prepared for Little Squaw Gold Mining Company

Pacific Rim Geological Consulting, Inc., Fairbanks, Alaska

Sheet 1

SCALE 1:20,000DATUM MEAN SEA LEVEL CONTOUR INTERVAL 100 FEET

MILES

KILOMETERS

0 1 2 3 4

0 1 2 3 4 5 6

TOPOGRAPHIC BASE FROM THE USGS CHANDALAR C-3 1:63,360 SCALE QUADRANGLE

QaQa

QaQa

QaQa

QhtQht QaQa

QhtQht QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QhtQht

aQaQ

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QhtQht

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QhtQht

QhtQht

QaQa

QaQa

QhtQht

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

QaQa

BxBx

BxBx

BxBx

Qgt3?Qgt3?

Qgt3Qgt3

Qgt2Qgt2

Qgt2Qgt2

Qgt2Qgt2

QctQct

QctQct

QctQct

Qgt2Qgt2

Qgt2Qgt2

Qgt2Qgt2

DusDus

Mz PzgMz Pzg

DlbDlb

DlbDlb

DlbDlb

DlbDlb

Mz PzgMz Pzg

Mz PzgMz Pzg

Qgt3?Qgt3?

Qgt3Qgt3

Qgt3Qgt3Qgt3Qgt3

Qgt3Qgt3

DusDus

DusDus

DusDus

DusDus

DusDus

DusDus

DusDus

DlbDlb

QafQaf

QctQct

QafQafQctQct

Qgt3?Qgt3?Qgt3?Qgt3?

QctQct

QatQat

QatQatQatQat

QafQaf

QafQaf

QafQaf

QafQaf

QctQct

QctQct

QctQct

DusDus DusDus

DusDus

QafQaf

QafQaf

QctQct

QctQctDlbDlb

DlbDlb

DlbDlb

DlbDlb

DlbDlb

DlbDlbDlbDlbMz PzgMz Pzg

Mz PzgMz Pzg

Mz PzgMz Pzg

Qgt1?Qgt1?

Dum?Dum?

Qgt3Qgt3QctQct

DumDum

QafQaf

QafQaf

QctQct

QctQct

DusDus

QctQct Qgt3Qgt3

Qgt3Qgt3

gQrgQr

DumDum

DupDup

DutDut

DutDut

QhtQht

QhtQht

QhtQht

Qgt2Qgt2

QatQat

Qgt3Qgt3

Qgt2Qgt2

Qgt2Qgt2

QatQat

QatQat

QatQat

Qgt3Qgt3

Qgt3Qgt3

Qgt3Qgt3 Qgt3Qgt3

Qgt3Qgt3

Qgt3Qgt3

BxBx

Qgt3Qgt3Qgt3Qgt3

Qgt3Qgt3

QatQat

QatQat

QafQaf

QclQclQafQaf

QafQaf

Qgt2Qgt2

Qgt2Qgt2

Qgt2Qgt2

QatQat

QatQat

Qgt1Qgt1

QctQct

DlbDlbDlbDlb

DlbDlb

DlbDlb

DlbDlb

Mz PzgMz Pzg

Mz Pzg Mz Pzg

Mz PzgMz Pzg

DlfDlf

DlcDlc

DlcDlcDlcDlc

DlbDlb

QctQct

DlfDlf

Mz PzgMz PzgMz PzgMz Pzg

Mz zg PMz zg PDlqDlq

QslQsl

QslQsl

DutDut

DutDut

Dlu

Dlu

Mz P

zgM

z Pzg

QctQct

QctQct

cQ

tcQ

t

DlbDlb

DlbDlbQctQct

DutDut

DutDut

DutDut

Dlc

Dlc

DlqDlq Mz PzgMz Pzg

DutDut

DutDut

DutDut

DutDut

DulDul

DumDum

DulDul

DumDumDumDum

DumDum

DulDul

QctQct

QctQct

QctQct

QctQct

Qgt3Qgt3

Qgt

3Q

gt3

Qgt3Qgt3

Qgt3Qgt3

QctQct

DutDut

DutDut

DupDup

DupDup

QrgQrg

QclQclQctQct

DulDul

DutDut

DumDum

DumDum

DumDum

DumDumD

umD

um

DupDupDupDup

DupDupDupDup

DusDus

QatQat

QcaQca

QcaQca

QcaQca

QcaQca

QcaQca

QcaQca

Qaf

Qaf

QctQct

QctQct

DumDum

DlbDlbQatQat

Mz PzgMz Pzg

QhtQht

QhtQht

DutDutDupDup

QctQct

Qgt3Qgt3

QctQct QctQct

Qgt3Qgt3

gQ

t3gQ

t3

Qgt2Qgt2QctQct

QlQl

QlQl

QlQlQgt3Qgt3

Qgt3Qgt3

Qgt3Qgt3QlQl

QlQl

QlQl

Qgt3Qgt3

Qgt3Qgt3

QafQaf

Qgt2Qgt2

QafQaf

QafQaf

QafQaf

QafQaf

QafQaf

QafQaf

QafQaf

Qgt2Qgt2

Qgt2Qgt2

Qgt3Qgt3Qgt3Qgt3

Mz PzgMz Pzg

Mz PzgMz Pzg

QctQct

Qgt1Qgt1

DlbDlb

Qgt1Qgt1

Qgt1Qgt1

Qgt1Qgt1

DlbDlb

DlbDlb

DutDut

DumDum

DumDum

Qgt4Qgt4

Qgt3Qgt3QctQct

Qgt2Qgt2

Qgt2Qgt2

Qgt2Qgt2

Qgt3Qgt3

QctQct

QctQct

Qgt3Qgt3

DumDum

DumDum

DumDum

DumDum

DumDum

DulDul

DulDul

DulDul

DulDul

DutDut

DutDut

tDutDu

ulDulD

DulDul

DulDul

DulDul

DupDup

uDpuDp

DupDup

Qgt3?Qgt3?

Qgt3?Qgt3?

DumDum

DumDum

DumDum

DumDumDumDum

DumDum

Mz PzgMz PzgDlbDlb

DlbDlb

QcaQca

DlbDlb

QcaQca

QcaQca

QcaQca

QafQaf

Mz PzgMz Pzg

QcaQca

QcaQca

QcaQca

QcaQca

DlbDlb

DlbDlb

DlbDlb

DumDum

DupDup

DlbDlb

DlbDlb

Qgt1Qgt1

QctQct

DutDut

DlbDlb

DlbDlb

Qgt1Qgt1

Qgt1Qgt1

Qgt1Qgt1

Qgt1Qgt1

Qgt2Qgt2

Qgt2Qgt2 Qct

Qct

DulDul

DlbDlb

DlbDlb

Qgt1Qgt1

DumDumDumDum

DumDum

DumDum

QctQct

QctQct

Qgt1Qgt1

QrgQrg

DlbDlb

Mz PzaMz Pza

Qgt1Qgt1

Qgt3Qgt3

Qgt2Qgt2

DlbDlb

DlbDlb

Qgt1Qgt1

DlbDlb

DlbDlb

DlbDlb

QctQct

QctQct

Qgt2Qgt2

Qgt2Qgt2

DlqDlq

QlQl

QaQa

DumDum

QaQa

QlQl

Qgt2Qgt2Qgt1?Qgt1?

QctQct

QctQct

QcaQca

QcaQca

QlQl

Qgt2Qgt2

DlbDlb

DlqDlq

DlbDlb

DlbDlb

Qgt2Qgt2

QaQa

QaQaQlQl

Qgt2Qgt2

QlQl

DlbDlb

Qgt2Qgt2

QlQl

DlbDlb

DlbDlb

Mz PzaMz Pza

Mz PzaMz Pza

QlQl

QlQl

Qgt2Qgt2

DlbDlbMz PzaMz Pza

Mz

z P

aM

zz

Pa

QaQa

Qgt2Qgt2

QcaQca

QcaQca

Qgt2Qgt2

Dlb?Dlb?

QaQa

QaQa

Qgt3Qgt3

Mz PzaMz Pza

DlbDlb

DlbDlb

Qgt1

Qgt1

Qgt2Qgt2

Qgt2Qgt2

Qgt1Qgt1

QaQa

QhtQht

Qa

Qa

Qa

Qht Qa

Qht Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qht

aQ

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qht

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qht

Qht

Qa

Qa

Qht

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Qa

Bx

Bx

Bx

Qgt3?

Qgt3

Qgt2

Qgt2

Qgt2

Qct

Qct

Qct

Qgt2

Qgt2

Qgt2

Dus

Mz Pzg

Dlb

Dlb

Dlb

Dlb

Mz Pzg

Mz Pzg

Qgt3?

Qgt3

Qgt3Qgt3

Qgt3

Dus

Dus

Dus

Dus

Dus

Dus

Dus

Dlb

Qaf

Qct

QafQct

Qgt3?Qgt3?

Qct

Qat

QatQat

Qaf

Qaf

Qaf

Qaf

Qct

Qct

Qct

Dus Dus

Dus

Qaf

Qaf

Qct

QctDlb

Dlb

Dlb

Dlb

Dlb

DlbDlbMz Pzg

Mz Pzg

Mz Pzg

Qgt1?

Dum?

Qgt3Qct

Dum

Qaf

Qaf

Qct

Qct

Dus

Qct Qgt3

Qgt3

gQr

Dum

Dup

Dut

Dut

Qht

Qht

Qht

Qgt2

Qat

Qgt3

Qgt2

Qgt2

Qat

Qat

Qat

Qgt3

Qgt3

Qgt3 Qgt3

Qgt3

Qgt3

Bx

Qgt3Qgt3

Qgt3

Qat

Qat

Qaf

QclQaf

Qaf

Qgt2

Qgt2

Qgt2

Qat

Qat

Qgt1

Qct

DlbDlb

Dlb

Dlb

Dlb

Mz Pzg

Mz Pzg

Mz Pzg

Dlf

Dlc

DlcDlc

Dlb

Qct

Dlf

Mz PzgMz Pzg

Mz zg PDlq

Qsl

Qsl

Dut

Dut

Dlu

Mz P

zg

Qct

Qct

cQ

t

Dlb

DlbQct

Dut

Dut

Dut

Dlc

Dlq Mz Pzg

Dut

Dut

Dut

Dut

Dul

Dum

Dul

DumDum

Dum

Dul

Qct

Qct

Qct

Qct

Qgt3

Qgt

3

Qgt3

Qgt3

Qct

Dut

Dut

Dup

Dup

Qrg

QclQct

Dul

Dut

Dum

Dum

Dum

DumD

um

DupDup

DupDup

Dus

Qat

Qca

Qca

Qca

Qca

Qca

Qca

Qaf

Qct

Qct

Dum

DlbQat

Mz Pzg

Qht

Qht

DutDup

Qct

Qgt3

Qct Qct

Qgt3

gQ

t3

Qgt2Qct

Ql

Ql

QlQgt3

Qgt3

Qgt3Ql

Ql

Ql

Qgt3

Qgt3

Qaf

Qgt2

Qaf

Qaf

Qaf

Qaf

Qaf

Qaf

Qaf

Qgt2

Qgt2

Qgt3Qgt3

Mz Pzg

Mz Pzg

Qct

Qgt1

Dlb

Qgt1

Qgt1

Qgt1

Dlb

Dlb

Dut

Dum

Dum

Qgt4

Qgt3Qct

Qgt2

Qgt2

Qgt2

Qgt3

Qct

Qct

Qgt3

Dum

Dum

Dum

Dum

Dum

Dul

Dul

Dul

Dul

Dut

Dut

tDu

ulD

Dul

Dul

Dul

Dup

uDp

Dup

Qgt3?

Qgt3?

Dum

Dum

Dum

DumDum

Dum

Mz PzgDlb

Dlb

Qca

Dlb

Qca

Qca

Qca

Qaf

Mz Pzg

Qca

Qca

Qca

Qca

Dlb

Dlb

Dlb

Dum

Dup

Dlb

Dlb

Qgt1

Qct

Dut

Dlb

Dlb

Qgt1

Qgt1

Qgt1

Qgt1

Qgt2

Qgt2 Qct

Dul

Dlb

Dlb

Qgt1

DumDum

Dum

Dum

Qct

Qct

Qgt1

Qrg

Dlb

Mz Pza

Qgt1

Qgt3

Qgt2

Dlb

Dlb

Qgt1

Dlb

Dlb

Dlb

Qct

Qct

Qgt2

Qgt2

Dlq

Ql

Qa

Dum

Qa

Ql

Qgt2Qgt1?

Qct

Qct

Qca

Qca

Ql

Qgt2

Dlb

Dlq

Dlb

Dlb

Qgt2

Qa

QaQl

Qgt2

Ql

Dlb

Qgt2

Ql

Dlb

Dlb

Mz Pza

Mz Pza

Ql

Ql

Qgt2

DlbMz Pza

Mz

z P

a

Qa

Qgt2

Qca

Qca

Qgt2

Dlb?

Qa

Qa

Qgt3

Mz Pza

Dlb

Dlb

Qgt1

Qgt2

Qgt2

Qgt1

Qa

Qht

Dlu

Dlu

Dlu

zgMz PzgMz PzgMz P

Dlu

Dlu

Dlu

DulDulDul

zgMz PzgMz PzgMz PQctQctQct

DulDulDul

DumDumDum

DlfDlfDlf

Pir

onee

E

E

E

E

E

E

Big QuartzVeinsBig QuartzVeinsBig QuartzVeins

BoulderCreek VeinsBoulderCreek VeinsBoulderCreek Veins

Tobin CreekPlacerDeposit

Tobin CreekPlacerDeposit

Tobin CreekPlacerDeposit

TobinCreekMill

TobinCreekMill

TobinCreekMill

Woo

dchuck

Cre

ek

Woo

dchuck

Cre

ek

Woo

dchuck

Cre

ek

Wod

chuc

k

oW

odch

uck

oW

odch

uck

o

Faul

tFa

ult

Faul

t

McNettProspectMcNettProspectMcNettProspect

Fu t

al

Fu t

al

Fu t

al

Interpreted Extension Little Squaw Fault

Interpreted Extension Little Squaw Fault

Interpreted Extension Little Squaw Fault

Kelty ProspectKelty ProspectKelty Prospect

MercuryProspectMercuryProspectMercuryProspect

CaribouGulch

Prospect

CaribouGulch

Prospect

CaribouGulch

Prospect CaribouGulchSouth

CaribouGulchSouth

CaribouGulchSouth

CaribouGulch

CaribouGulch

CaribouGulch

MikadoGold MineMikadoGold MineMikadoGold Mine

ulFa

tulFa

tulFa

t

Mki ado

Mki ado

Mki ado

Big CreekPlacer

Deposit

Big CreekPlacer

Deposit

Big CreekPlacer

Deposit

St. Mary’sCreek

St. Mary’sCreek

St. Mary’sCreek

Kiska/TonopahKiska/

TonopahKiska/

Tonopah

???

Summit

Summit

Summit

FaultFaultFault

Ss e

yt m

Ss e

yt m

Ss e

yt m

Big CreekBowlBig CreekBowlBig CreekBowl

RatchetRidge

Prospect

RatchetRidge

Prospect

RatchetRidge

Prospect

SummitGoldMine

SummitGoldMine

SummitGoldMine

EneveloeGold MineEneveloe

Gold MineEneveloe

Gold Mine

SummitGulchSummitGulchSummitGulch

Robbin’sGulch

Robbin’sGulch

Robbin’sGulch

LittleSquaw

Gold Mine

LittleSquaw

Gold Mine

LittleSquaw

Gold Mine

Gold GulchGold GulchGold Gulch East ProspectorEast ProspectorEast Prospector

GrubstakeGrubstakeGrubstake

MelloBenchPlacerDeposit

MelloBenchPlacerDeposit

MelloBenchPlacerDeposit

SpringSpring

eC

reke

Cre

k

Spring

eC

rek

PioneerProspectPioneerProspectPioneerProspect

PioneerPioneerPioneer

FaultFaultFault

CrystalProspectCrystalProspectCrystalProspect

UranusUranusUranus

Aurora/UranusGulch

Aurora/UranusGulch

Aurora/UranusGulch

NuggetCreekNuggetCreekNuggetCreek

NorthStar Vein

NorthStar Vein

NorthStar Vein

PallasgrenProspectPallasgrenProspectPallasgrenProspect

DrumlummonDrumlummonDrumlummon

PedroGulchPedroGulchPedroGulch

Interpreted

Interpreted

Interpreted

Ee

n

xt nsio

Ee

n

xt nsio

Ee

n

xt nsio

Mikado

Mikado

Mikado

FaultFaultFault

n

Extension

Extension

ExtensioM

cell

anL

Mc

ellan

LM

cell

anL

Creek

Creek

Creek

ault

Fault

Fault

F

???

???

???

McL

lael

n

McL

lael

n

McL

lael

n

Creek

Creek

Creek

FaultFaultFault

p

e s n

Inter reted Ext n io

p

e s n

Inter reted Ext n io

p

e s n

Inter reted Ext n io

Pi nee F u

or

a lt

Pi nee F u

or

a lt

Pi nee F u

or

a lt

ML

lc

e lan

ML

lc

e lan

ML

lc

e lan

Creek

Creek

Creek

aul

F

tau

lF

tau

lF

t

Litlt e

Litlt e

Litlt e

??????

???

???

???

Little

Little

Little

qw

S uaqw

S uaqw

S ua

tFaultFaultFaul

Intp

eted

err

Intp

eted

err

Intp

eted

err

xteni

n

E

s o

xteni

n

E

s o

xteni

n

E

s o

kao

Mi

dka

o

Mi

dka

o

Mi

dFault

Fault

FaultZoneZoneZone

EE

E

E

E

E

DD

UUUU

DD

D

UU

D

Geologic mapping by T.K. Bundtzen and G.M. Laird, June 28-July 19 and September 3-5, 2006

Grubstake EastGrubstake EastGrubstake East

TonopahDepositTonopahDepositTonopahDeposit

Sm

i

um

t

Sm

i

um

t

Sm

i

um

t

FaultFaultFault

Ss e

yt m

Ss e

yt m

Ss e

yt m

MikadoDeposit-Northwest

MikadoDeposit-Northwest

MikadoDeposit–Northwest

C’C’

CC

B’B’

BBAA

A’A’

C’

C

B’

BA

A’

Qgt4Qgt4

Qgt3Qgt3

Qgt2Qgt2

Qgt1Qgt1

QaQa QhtQhtQafQaf QctQct

QatQat QcaQca

QclQcl QlQl QrgQrg

Mz

Pzg

Mz

Pzg

Mz

Pzg

Mz

Pzg

Mz

Pza

Mz

Pza

DlbDlb DlqDlq DlfDlf DlcDlcDusDus DulDul DumDum DutDut DupDup

Qgt4

Qgt3

Qgt2

Qgt1

Qa QhtQaf Qct

Qat Qca

Qcl Ql Qrg

Mz

Pzg

Mz

Pzg

Mz

Pza

Dlb Dlq Dlf DlcDus Dul Dum Dut Dup

ut

rr

Qa

ena

y Holocene

Wisconsin

Pre-Wisconsin

oD

evn

ian

to

T?

ri

assi

c o

D

evni

an?

Correlation of Map Units

Digital Cartography by Kelly Digital Design, 2006/2007

3380’

2400’

Dlb

Mz Pzg

DlbDum

Pioneer Fault

DutDut

Dul

DulDum

McNett-EneveloeVein Fault System

DumDul

Dut

Dut

Mikado Vein Fault Zone

Dup

bD

l

Dum

Dlb

McNett Peak5549’

Dum

DlbDlb

Mz Pzg

Dlb

5000’

3000’

1000’

5000’

3000’

1000’

A’A

Extension of Little SquawFault Zone

Dut

B B’

Dlb

Mz Pzg DlbDul

Dum

Dlb

Dlb

Dum

Dum

Dul

Dlb Dlb

Dum

Dup

Dum

Mz Pzg

Dlb

Dlb

Pioneer (Vein) Fault

UranusShearHead of Little

Squaw Creek

Ratchet Ridge

Summit Vein FaultKiska Vein Fault

lD

b

Dum

Mikado Fault Zone

5000’

3000’

1000’

5000’

3000’

1000’Dlb

Little Squaw/Crystal Fault Zone

Dum?

tDu

uDp

tDu

Dul

Dut

Dlbc

Dl

Dum

Dum

Dul

Dut

Mz

z P

g

tDu

zz

M P

g

Dut

Dlu

tDu

DlbMz Pzg

DlcDlf

Dlc

Interpreted Extensionof Mikado Fault Zone Interpreted Extension

of Pioneer Fault

DusDlbDusDusDusDusDlb

4000’

3000’

1000’

4000’

3000’

1000’

C’C

Location ofMap Area

272727

252525

333

363636

262626

202020

222222

282828

262626

222222

181818

353535

222222

757575

303030

808080

808080

148° 00’

67° 30’148° 20’

67° 35’

440000m

445000m

450000m 455000m

7500000m

7495000m

7490000m

440000m

445000m 450000m

455000m

7500000m

7495000m

7490000m