Geological Fieldworkcontinues with the Two- Sectionformat Adopted in the Last Volume (Geologicalbranch Paper 1982-1 1
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GeologicalFieldwork 1952 a summary of field activities of the geological branch, mineral resources division Paper 1983- 1 RavinceofBritishcolwnbia Ministry of Energy, Mines and Petroleum Resources ISSN 0381-243s Victoria British Columbia Canada May 1983 FOREWORD This is theninth year of publication of Geological Field- work, a publicationdesigned acquaintto theinterested publicwith thepreliminary results of fieldworkof tire GeologicalBranch as soon as possibleafter the field season. The reports are writtenwithout the benefit of extensive laboratory or officestudies. To improve the qualityof presentation,figures in this year's publication were doneby our draughting section. Thisedition of Geological Fieldworkcontinues with the two- sectionformat adopted in the last volume (GeologicalBranch Paper 1982-1 1. The Project and AppliedGeology sectic'n includesreports of metallic and coalfieldinvestigations, reports of District Geologists, andproperty examinations related to some mineral properties funded inpart by Ministry programs. The OtherInvestigations section consists mainly of reports of work doneby different universities in <cooperation with the Ministry. The cover photograph depicts geologists examining tha discovery outcrops at Granduc. Outputof this publication was coordinatedby A. Panteleyev and W. J. WMillan.Manuscript input was by D. I3ulinckxof GeoscienceProjects. Draughting of the figures in the Project andApplied Geology section of the report was by El. HOensen, P. Chicorelli, and J. Armitage of the draughtingoffice and Ian Webster of GeoscienceProjects. A. Sutherland Brown, ChiefGeologist, GeologicalBranch, MineralResources Division. 3 "_ DISTRIBUTION OF PROGRAMS 1982 GEOLOGICAL FIELDWORK MINISTRY UNIVERSITYPROJECTS- 0 GENERALREPORTS-24,25 Figure 1. Distribution of program. Geological Fleldwork, 1982 4 TABLE OF COBTEBTS PROJECT AND AF'PLIED GEOLOGY Page 1 ~oy,T.: Geology inthe Vicinity of theSullivan Deposit, Kimberley,British Columbia(82F, G) ................... 9 2 Addie, G. G.: 'A-1' BluebirdAdit, An Example Of Galena- coatedJoints rather thanVeins (82F/14) ............... 18 3 Grieve, D. A. and Fraser,Janine M.: LineCreek and Crown Mountain Areas,Elk Valley Coalfield (82G/10, 15) ...... 21 4 Church, B. N. andRobertson, S.: Geologyand Magnetometer Survey of the SapphoGold-Silver-Platinum-Copper Prospect(82E/2) ....................................... 27 5 Church, B. N. andSuesser, U.: Geologyand Magnetostrati- graphy of Miocene Basalts of the Okanagan Highlands, British Columhia(82L/2, 31 ............................ 33 6 Eastwood, G.E.P.: LeechRiver Area, Vancouver Islan,3 (92B/5,12) ............................................ 37 SickerProject (92B/13) .................. 46 7 Church, B. N. and Brasnett, D.: Geologyand GravitySurvey of thenllameen Coal Basin(92H) ....................... 47 8 Ray, G. E.: TheNagy Gold Ocurrences,Doctors Point,, Harrison Lake (92H/12W) ................................ 55 9 Ray, G. E.: Carolin Mine - Coquihalla Gold Belt Pro:ject (92H/6, 11) ............................................ 63 10 White, G. V.: The Bluesky - A Stratigraphic Marker 1.n NortheasternBritish Columbia(931. 0, P) .....,......... 85 11 Church, B. N. andEvans, S. G.: Basalts Of the Kamloops Group in Salmon River Area (82L/5) ...................... 89 12 Legun, A.: Stratigraphy and SedimentologyNotes on the BullheadMountain-Peace River Canyon, CarbonCreek Area, NortheasternBritish Columbia(930/15, 16; 94B/1, 2) ............................................... 93 13 Alldrick, D. J.: The MosquitoCreek Mine, Caribm Gold Belt (93H/4) ................................................ 99 14 KOO, J.: Telkwa Coalfield, West-Central British Columbia (93L) .................................................. 113 5 TABLE OF CONTENTS (Continued) PROJECT AND APPLIED GEOLOGY (Continued) Page 15 Schroeter, T. G.: PorphyryCreek Property (94D/8E) ......... 123 16 Schroeter, T. G.: Toodoggone River Area (94E) .............. 125 17 Diakow, L. J.: A Comparison of VolcanicStratigraphy, Structure,and Hydrothermal Alteration of the Silver Pond (CloudCreek) and Wrich-Awesome Claim Groups, modoggone River (94E) ................................. 134 18 Panteleyev, A.: GeologyBetween Toodoggone and Sturdee Rivers(94E) ........................................... 143 19 MacIntyre, D. G.: A Comparison of the Geologic Setting of Stratiform Massive SulphideDeposits of theGataga District with the Midway andWindy-Craggy Deposits, NorthernBritish Columbia (94F, L; 1040/16;114P/12) ... 149 20 Schroeter, T. G.: Brucejack Lake (Sulphurets)Prospect (104B/8) ............................................... 171 21 Schroeter, T. G.: Mount JohnnyProspect (104B/llE) ......... 175 22 Schroeter, T. G.: KutchoCreek Property (1041/1) ........... 179 23 Alldrick, D. J.: Salmon RiverProject, Stewart, British Columbia(104B/1) ...................................... 183 24 Hora, 2. D.: Mapping of Silica Occurrences inBritish Columbia ............................................... 196 OTHER INVESTIGATIONS 25 Northcote, K. E., Smyth, W. R., andSchmitt, H. R.: RecentMineral Resource Assessment Studies in British Columbia ....................................... 20 1 26 Watson, P. H. and Godwin, C. I.: Silver-Gold Zonation in the Lass VeinSystem, Beaverdell Camp, South-Central British Columbia(82E/6E) .............................. 227 27 Goldsmith, L. B. and Sinclair, A. J.: SpatialDensity of Silver-Lead-Zinc-Gold vein Depositsin Four Mining Camps inSoutheastern British Columbia (82F) ........... 251 28 Cann, R. M. and Godwin, C. I.: Genesis of Magmatic Magnetite-ApatiteLodes, Iron Mask Batholith,South- Central British Columbia (921) ......................... 267 6 TABLE OF CONTENTS (Continuned) OTHERINVESTIGATIONS (Continued) Page 29 Sinclair, A. J. andBentzen, A,: A Computer-based Procedurefor Fantifying Geological Data for Resource Assessment .................................... 285 30 Sinclair, A. J. andHansen, M. C.: Resource Assessment ofGold-Quartz Veins, Zeballos Mining Camp,VdricoUVer Island - A Preliminary Report (92L) .................... 29 1 31 Andrew, Anne, Godwin, C. I., and Sinclair, A. J.: P.ge and Genesis ofCariboo Gold MineralizationDetermined by Isotope Methods(93H) .................................. 305 32 Whittaker, P. J.: Chromite in the Mount Sidney Williams Area, Central British Columbia(93K) ................... 315 7 PROJECT ANDAPPLIED GEOLOGY GEOLOGY IN THE VICINITY OF THESULLIVAN DEPOSIT KIMFJERLEY, BRITISH COLUMBIA (82F, G) BY T. H8y INTRODUCTION The study of the Purcell Supergroup,initiated in 1977, was intendedto develop a betterunderstanding ofthe stratigraphic, structural and tectonicsetting, and orecontrols of theSullivan and c,ther smal.ter but similar clastic-hostedlead-zinc deposits southeasternin 13ritish Columbia.Kanasewich (1968) recognized a basementstructure from anomalousmagnetic and gravity trends and by deep seismic reflections thatcut northeasterly across the more northerlyregional stratigraphic andstructural trends. He concludedthat the structure was a Precambrian rift and thatthe Sullivan deposit originated within it. The p.coposed riftcoincides with the pronounced St. Mary-BoulderCreek and the Moyie- DibbleCreek fault systems that cut across the Purcell Mountains .and the western ranges of the Rocky buntains(Fig. 2). Lowe'r Pa1eozoi.c (for example, leech,1958) and earlier mdrynian movements, generallyblock- faulting and tilting (Lis and Price, 1976),had been recognized along thesetransverse fault systems, but earlier Eurcell age moverrents 'sad not beendocumented. A primaryobjective of this study was todetermine if thesetransverse structures were activein Purcell time andcould thereforehave controlled theregional distribution le.sd-zincof deposits. t5 *2' ?II Flyre 2. Location map, shailng St. Mary, Boulder Creek, MoyIe, and Dibble G-eek faults, and published geologlcal map5 In the vlclnlty of the Klmber ley mp-erea. 9 The smdyinitially focused on theKootenay Ranges east of the Rocky MountainTrench and results were releasedas two preliminary maps (Hoy, 1979; McMechan, 1979).Locations are given on Figure 2. Dramaticthick- ness increases and rapidfacies changes in theAldridge Formation (near thebase of theexposed Furcell succession) occur in thevicinity of the BoulderCreek fault. The fault is interpretedto havebeen a growth fault whichdown-dropped thearea tothe south (Hoy,1979, 1982a). Furthersouth, McMechan (1979,1981) recognized that overlying Furcell platformalrocks have similar, though less dramatic,changes. These data tendto confirm the presence of a transversePrecambrian rift structure. It was suggested (Hoy, 1982b) thatthis transverse zone is marked in Furcellrocks to the west by thepreferential distribution of intra- formationalconglomerate and mrcell sills. It is alsocharacterized by anomalousconcentrations of boronthat are supposedly related to deep crustalfractures (Ethier andCampbell, 1977). Mappingand detailed sectionmeasurements were subsequently begun in the vicinity of the Moyie faultin the Furcell Mountains (Hoy andDiakow, 1981, 1982). The work continuedthis past summer and was extendednorthward to encompassthe St. Mary fault and the Sbllivan mine at Kimberley.Mapping of the Kimberleymap-area is beingcompiled and will be released as a prelimin- ary map (1 :50 000 scale) when conpleted.Further fieldwork on the Purcellproject will be minimaland will onlyinclude fill-in traverses and sectionmeasurements; these will be completednext field season. The Kimberleymap-area is withinthe Fernie west-half (82G/W) sheet