Precambrian Geology, South of Gogama Area; Ontario Geological Survey, Preliminary Map P.3762—Revised, Scale 1:50 000
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Contact: FOR FURTHER PLEASE CONTACT: BY TELEPHONE: BY E-MAIL: INFORMATION ON The Reproduction of MNDM Publication Local: (705) 670-5691 the EIP or Content Services Toll Free: 1-888-415-9845, ext. 5691 [email protected] (inside Canada, United States) The Purchase of MNDM Publication Local: (705) 670-5691 MNDM Publications Sales Toll Free: 1-888-415-9845, ext. 5691 [email protected] (inside Canada, United States) Crown Copyright Queen’s Printer Local: (416) 326-2678 Toll Free: 1-800-668-9938 [email protected] (inside Canada, United States) abc Mafic Metavolcanic Rocks 81°50′43″ 50′ LEGEND 1 437000 m 38 39 45′ 1a Flows, massive 440000 m 41 42 43 44 45 46 40′ 47°40′06″ 47 48 49 450000 m 51 52 8cg 53 54 55 35′ 460000 m 30′ 81°27′33″ 1b Flows, pillowed 56 57 58 59 61 62 63 64 465000 m 40′ Boundary PHANEROZOIC 1c Tuff Duckbreast Lake ! 8ahic ! Skidway Lake 80 8cj 8f C2 47°40′06″ 1d Amygdaloidal ! ! ! 8ah C8f 80 8c 40′ Lake ! ! ! 1e Feldspar ± amphibole phenocrystic Minisinakwa Lake 29 CENOZOIC 73 ! 1 72 C8 ! 1f Schistosee Ontario Geological Survey 8cg ! C8 8cj 8ah ! 29 77 8c 46 5279000 m ! 1 5279000 m ! 1 1g Amphibolite ! ! ! 8ch ! ! C11a ! Mattagami QUATERNARY ! 8cj 70 80 ! C5 1h Gneissic ! ! 56 ! ! ! 8c ! ! C8 8cgj 75 ! Lake 1gfb 8c ! ! ! ! 85 ! ! MAP P.3762—Revised Spruce ! M a ! RECENT ! ! 8j 1fa,4e This is a field legend and may change due to subsequent laboratory 1 8c Lake ! a ! ! ! Lake, stream and wetland deposits ! 1g,8j work. C8 t C8 ! 6 ! (! ta ! C5,1 ! b ! 8dij,10b ! 88 8cj 8f ! ! 1g The letter “C” preceding a code refers to data compiled from existing g 85 ! ! 85 PRECAMBRIAN GEOLOGY ! 1ga ! 78 78 *# a PLEISTOCENE ! ! maps and from maps filed for assessment work credits and available 8chg ! 8f 4c ! 1b py,qv, 84 m ! C5 1ac ! 1ga,8c 64 83 Glacial, glaciofluvial and glaciolacustrine deposits: sand, 65 ! C5 47 for viewing at the Timmins Resident Geologist’s Office and from the C8 ! ! ! i ! C8 ! 56 59 mag ! gravel, clay, till ! ! ! ! 63 8dg ! L GeologyOntario website. The letter "G" preceding a code refers C8 1ga ! 1a 2bd ak ! 75 ! 72 ! St. Louis SOUTH OF GOGAMA AREA 2bf to data interpreted from geophysical data. ! 56 4abc ! 2cb 1a Lake C8 8fj 79 ! e UNCONFORMITY C8 2c c ! ! 2bc Rock codes designated with a “/” (e.g., 7a/3g) indicate that the lithology C8 75 C8 2d 75 F 2b,1a 52 a ! displays characteristics that could belong to either rock type but the ! 77 M 2ae u 77 8fij 2ae 62 PRECAMBRIAN first code is inferred to predominate. ! 2baf ! G10 2je l in t 8c,10a 8dhj 80 G9 d Scale 1:50 000 ! 2aef is ! C8 C10 2jaf Parts of this rock may be extrusive. Geoffrion C11a 86 10a 88 85 in PROTEROZOIC e 1000 m 0 1 2 km 8a ! ! 8ci 76 Lake 2b This term is used to describe an intensely foliated rock; assignment a C8f 8f 80 85 to a protolith is speculative. k C2,8 *# 2b,10a ! ! C8 8dk,10a 65 py,mlc w C8 C8f 1g,2h 1a 1f,2bg *# MESOPROTEROZOIC 78 a C1 py,cz 1 1ag (! 76 76 1fa L 9 8c 1be,10b NTS Reference: 41 P/11, 12 (! Groves 65 8ai ak C8 1c,8c 85 Mafic Intrusive Rocks Muskeg Lake 1a 85 1a C8 C8 8cki 3g/2g C1a SYMBOLS H e Lake C8 C10 C1a 3g,2g,1f 1a 1a 42 C8 a C10 © Queen's Printer for Ontario, 2012. F 87 12 Sudbury Dike Swarm: olivine gabbro 8abhji n 8c,10a 77 C3 au Small bedrock C8 2c,3c,8j o *# 3gd Schistosity (inclined, 11a v 8cij 88 80 4b 10 C1 C8 81 55 88 outcrop vertical, magnitude l e 75 C2 py,cz INTRUSIVE CONTACT This map is published with the permission of the Director, Ontario t Ni,Cu 8ji 4e,3g 75 Vendette 76 r py 4ce *# of dip uncertain) Geological Survey. *# 75 L 436000 m Lake 2cb 74 *# 2cg,3b C4a C4a C1a 6 a Area of bedrock 80 BRUNSWICK TP. C8 C8 (! 9be ST. LOUIS TP. k 88 C4ae C4a,9a PALEOPROTEROZOIC 83 1adc C8 2bdc 76 N outcrop Fracture, unknown 77 C1a 3afb,2b 85 e 70 a C9 IVANHOE KEITH PENHORWOOD KENOGAMING F BADEN ba 83 *# displacement, unknown 8ah 2bf BEEMER C1af C2 a 3cb,8c Mafic Intrusive Rocks 10 MCBRIDE ZAVITZ HINCKS 8agk SILK CROTHERS HASSARD ENGLISH ARGYLE mag u 2bg,3g k Geological contact generation (inclined, 82° C1a C2 w 81° C8 G2 HORWOOD 566 85 l 85 48° HARDIMAN REGAN 144 a C9 C8 2c t ! 48 (interpreted, gradational, vertical, trend only) NORTHRUP GOUIN MOHER SEMPLE HUTT BANNOCKBURN Upper C2 s ! GROVES TP. C2 59 11 Biscotasing Dike Swarm i ROBLIN MONTROSE 9be 2c,10a C9 St. Louis 8ah 2b R interpreted from C8 ! ! 88 C1a ! ! ! ! ! 77 ! ! 11a Gabbro to quartz gabbro 74 C10 2a,1a 2g i 74 GARDHOUSE MIDDLEBORO EMERALD SOTHMAN MIDLOTHIAN v 3b,2c py NEWTON geophysical data) Brittle fault, unknown DALE DOON Lake C2 82 e C3 C11a Shuller NURSEY r MCOWEN HAZEN I.R. 71 Pensyl 83 cz,qv # WIGLE HALLIDAY * 85 8cah 85 144 75 C8 65 displacement, 8a,1g 12 Lake DES C1a C3 INTRUSIVE CONTACT (! 88 Lake CARTER MATTAGAMI HI 3bdg,2b 9aef Sinistral fault, MARION ROSIERS 78 1st generation (vertical) KEMP MOND 1ga 4de,1f 4d C9 RAYMOND RANKIN C8 C8 C4 HEENAN GENOA WHALEN 74 ! STETHAM BURROWS 1g Au,qv ! C4 C4a unknown generation, 1gaf 2bf ! 1 88 3bg,2g ! 4a,1f C1a ! ! 9ae 10 Matachewan Dike Swarm NOBLE TOGO VAN C1a 6 ! ! 50 C2 ! (! 85 *# BENTON ERIC KNIGHT HISE trend only Brittle fault, unknown FRATER SOMME JACK CABOT KELVIN NATAL C11a 10a Aphyric quartz gabbro MALLARD C8 1a 85 Gogama 1gh,8a 2g Gowganda C10 1 ! displacement, unknown *# 2g/3g 10 ! 1 10b Plagioclase phyric quartz gabbro, >1% plagioclase 73 4ae !! 73 NEVILLE BRUNSWICK CONNAUGHT MACMURCHY ! ESTHER HUFFMAN ST. 88 C2 ! 4c Fault, unknown generation (inclined) MILNER 82 py,cz,qv ! LOUIS CHURCHILL ! Jessica 85 83 ! phenocrysts TYRRELL OSWAY 74 C11a C9 POTIER ! ! GROVES 57 4e 74 ! horizontal movement, ! ! 9ae10b 4e/3g,10a C9 Shining Tree 3g,4e ! 4eca Lake 2g ! 9a BENNEWEIS ! NEVILLE TP. 8ah,1gh 75 G4 ! LEONARD ! C9 EDITH FINGAL YEO ! 4ca unknown generation, CHAMPAGNE ASQUITH Ductile shear, 81 ! ! LEITH C4e C4 ! 9ae10b INTRUSIVE CONTACT ARBUTUS 81 CHESTER LONDONDERRY MIRAMICHI FAWCETT 88 1 C4 10a C9 9a 9ae trend only 10 dextral displacement, 4ac C9 INVERGARRY 4e 4ec (!3 CAVELL CAREW GARVEY 560 NORTH unknown generation 81 9ae ALCONA VROOMAN GARIBALDI OGILVIE WILLIAMS C9 SMUTS RAY 85 7a,3g 9ae 9a WESTBROOK SHEARD 10 85 9ae ARCHEAN Rideout fault zone (inclined,