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FeO (total Fe3 * Fe2 * Ti MARGINAL NOTES Ministry of Northern Development Location and Access and Mines Ontario The Batchawane Synoptic Project map area is located in the Districts of Algoma and Sudbury, and is bounded by Latitudes 46©56© to 47©"30© and Longitudes 83n30© to 84©50© The approxi Mines and Minerals Division mate area of 5000 km2 covers 81 townships and 8 unsurveyed Ontario Geological Survey areas Access to the region is available by allwealhei roads, logging roads, and the Algoma Central Railway line, numerous MAP P.3060 rivers and lakes also provide access by boat and float-equipped aircraft A hydro-electric powerline and accompanying access Geological Series-Preliminary Map road passes from the Mississag. River hydro-electnc dam system through Handleman. Ewen. Butcher, Sherratt, Scriven. Moggy, Moen. Hammond Hallett, and Emiry Townships. A three-stage hydro-electric power dam system is located al PRECAMBRIAN GEOLOGY the western,end of the Montreal River reservoir. Power generating dams are located in Home. Peever, and Rix Townships. Several power lines extend southward from these generating stations in Batchawana Synoptic Project the western part of the region. Access into the central part of the map area is by the Algoma Central Railway line which operates both freight and passenger service with scheduled stops within Grey Owl Lake Sheet the area F l oa l-equipped aircraft service is available in the Village of Batchawana Bay and in Hie city of Sault Ste Mane Helicopter District of Algoma service can be obtained from Sault Ste Mane and Sudbury. Three MgO h at d surfaced all-weather roads provide access inlo the map area. Scale 1 :50 000 Highway 17 extends northward from Sault Ste. Marie along the Figure 2: AFM and AI-Fe Ti-Mg diagrams displaying the eastern shore of Lake Superior Highway 129 is located just east Aetrei ©^00 0 1 Kilometre dominat tholeiitic trend of the western volcanic domain. of the map area and provides access to the eastern part of the 0 1 Mile map area, Highways 556 and 531 provide access to Searchmont FeO (total) and the southern and eastern parts of the map area respectively. Gravel haulage roads, extending eastward from Highway 17, are located along the Harmony River, the Batchawana River in Kincaid NTS Reference: 41 N/8 Township, and along the Montrea© River The road along the ODM-GSC Aeromagnetic Map: 2203G Montreal R©ver is a private access road and permission to use it OGS Compilation Map: 2419 must be obtained from the Great Lakes Power Company in Sault Ste. Marie. Access into Olsen and Davieaux Townships is made along log haulage roads from the main Harmony River haulage road. Palmer Township can be accessed from a road north of Queen©s Printer for Ontario. 1987 Batchawana Bay The road access along the Batchawana River is Printed m Ontario, Canada poor, particularly east of the Tribag Mine site; however, all-terram cvcles can negotiate the old unmamtained haulage roads wilh Parts of this publication may be quoted if credit is little difficulty. The Batchawana River Road extends north of Wart and the material is properly referenced. Lake into Runnalls Township An alternative maintained forest This map is published with the permission of V.G, access road, extending as far as the Tnbag Mines site, branches Milne. Director, Ontario Geological Survey. off at "Mile 67" on Highway 17 in Kincaid Township Roads into Lake Superior Provincial Park are restricted and permission must be obta-ned from the park administration for vehicle access Access into the eastern pan cf the area is provided from Searchmont along either Highway 556 or Highway 129 Access from Searchmont is along the Whitman Dam Road Ihrough Daumont anc Hynes Townships, northward into Lunkie and Gapp Townships, where it is known as Teepee Lake Road where it joins with the "Domtar" road which extends eastward through Gaudry, Pine, and Mcilveen Townships The ©Domtar" road extends north into Wlasy Township as fa© as Quinn Lake Access inlo Gapp and N320+K20 MgO Al Desbiens Township is by 3 nauiage road west of Hanes Lake in Figure 3: AFM and AI-Fe * Ti-Mg diagrams showing the mixed tholeiitic and Gaop Township, This poony maintained roao extends as far west calc-alkalic volcanic trend in the southeastern and eastern part of the map area. as the Algoma Central Railroad line at the Menaima stop. Access into Gaudry and Bracci Townships is by a haulage road located approximately 1 km west of the junction of the Domtar road and FeO (total) FB3+ Fe2 the Teepee Lake Road Various unmainiamed haulage roads from ihe ©Domtar road provae access into Nahwegezhic. c ine, Mcil veen. Hoffman, and handleman Townships. Most o* these roads M©i^ _ - \ require foj©-wheei dnve or all-terrain vehicle? for access. Xn TP " ©" "© \ Access inlo the eastern and southeastern parts o© the map area if along the Gena Lake road in Mcilveen Township which V\ extends northward as far as the Ontario Hvdro power line in Ewen Township A four-wheel drive access road along tne power line .© © D.L .-© -. extends northwestward as lar as the Cow River in Moggy Town ship This road continues northvvgro througn Moen. Hammond, and Hancock Townships where it joins with the Pineal Lake road at Pineal Lake This road extends east and north to Highway 129 at LOCATION MAP Scale: 1:1 584 000 or l inch TO 25 miles Chapleau Access into Neil and Sherratt Townships is by haulage road south of Pineal Lake. Areas that are difficult to access by road or wate^ are Way- White ana Runnalls Townships ana mosi areas north of the Mon treal River reservoir, west of Hammond Township. LEGEND
General Geology PHANEROZOIC CENOZOIC The following summary is partially synthesized from reports that "V "- v*^ are listed in Table 1. The area can be subdivided geologically into X- \2 QUATERNARY four major lithotectonic domains of the Superior Province (Figure PLEISTOCENE AND RECENT 1): the Chapleau Gneiss Domain, tne Ramsey Gneiss Domain the Sand, gravel, clay, till, swamp deposits N320+K20 MgO Al Algoma Plutonic Domain, and the Batchawana Volcanic Domain Figure 4: AFM and AI-Fe * Ti-Mg diagrams showing the mixed tholeiitic-calc-alkalic {Card 1979) The Chapleau and Ramsey Gneiss Domains extend UNCONFORMITY trend of the Cow River area. The calc-alkalic volcanics occur in the Neil! township area. eastward tc the Abitibi-Swayze Volcanic Domain and were formed \ -t \ \ ,, ;, by anatexis of supracrustal and plutonic rocks, The Algoma Plu PALEOZOIC : tonic Domain 15 comprised primarily of leucocratic granite and LOWER AND MIDDLE CAMBRIAN quartz monzonite (Card 1979) The Chapleau Gneiss©Domam is W i © \ " 1 "" \ ^ FeO (total) FC3 JACOBSVILLE FORMATION part of the Kapuskasing Subprovmce Recent U.©Pb zircon dating - (Corfu and Grunsky, 1987 © indicates a iate thermal episode *- A - 1^..X-A f~-* \ within this zone The Batchawana Volcanic Domain can be sub \ \ , i 17 Undifferentiated divided into two major volcanic cycles (discussed below) , b©J * ,*W 17a Sandstone The Archean metavolcanic-metasedimentary rocks have been deformed, metamorphosed, faulted, intruded by felsic plutonic LOWER CAMBRIAN rocks and intruded by several episodes ol diabase dikes The MICA BAY FORMATION area is also partly covered by sedimentary rocks of the Huronian Supergroup (Grunsky 1980}. 16 IGa Arkose, siltstone, shale The oldest volcanic cycle within the Batchawana Volcanic Domain consists of a sequence of tholeiitic Hows and sills with UNCONFORMITY minor amounts of intercalated felsic tuffs and clastic sedimentary rocks. This western cycle extends from Palmer Township eastward PRECAMBRIAN into Davieaux Township Geochronological stratigraphic, and PROTEROZOIC structural evidence suggests that this early cycle of tholeiitic LATE PROTEROZOIC volcanic rocks accumulated along an east-northeast-lrending axis ^ .;© l"i yf BRECCIA PIPES A later eastern cycle, comprised of a lower tholeiitic flow - *?-"*. sequence with an upper sequence of calc-alkalic mafic to felsic y__-- I5a Polymictic breccia: quartz-carbonate matrix volcanic rocks, extends northwestward from Lunkie Township j, K l "t ^75 T^~ to to/* i^l i © lt,^ y© Runnalls Township and eastward into Moggy and Moen Town UNCONFORMITY ships. The relationship between the eastern and western cycles is obscured, but it is possible thai the contact is in part conformable FELSIC VOLCANICS AND ASSOCIATED INTRUSIVE ROCKS and in pan disconformable because of subsidence and faulting of the first cycle. Accompanying this subsidence, a fault-bounded, deep-water sedimentary basin was formed in the Vibert and Tron 14a Felsile N920+K20 MgO Al sen Township areas With the onset of the second cycle calc- I4b Quartz-feldspar porphyry Figure 5: AFM and AI-Fe -t- Ti-Mg diagrams showing the tholeiitic alkalic volcanism in the Lunkie Township area, deposition of trend of the diabase dikes. pyroclastic tuffs and sediments occurred lo the nortnwest in the SEDIMENTARY ROCKS sedimentary basin This interpretation is tn part supported by the fining of pyroclastic material northwestward from Way-White 13a Conglomerate Township into Runnalls Township The stratigraphy and schistosity of sedimentary rocks m a northwest-trending pattern delineates MAFIC VOLCANIC ROCK? the axis of the second phase of deformation within the map area. This trend typifies the fabric of the major tectonic elements ol the 12 12a Basalt volcanic-sedimentary rocks throughout the entire belt. Accumula -© -,""*-\* """© x ^ TV*, 7s ^ f- Vx^cJ^1 - l-""""-^- ^"© tion of sediments within the major sedimentary basin subdomain ©- -^ © "VBS^ fv~^"©-^/^A- vy-i"- © ^~N INTRUSIVE CONTACT possibly continued until intrusion of the felsic plutonic rocks and - "-X-- ^ A^ftn^^^lM subsequent arresi of tectonic activity. -©-^-© X --^*^ , VfBS.Vs,, - EARLY PROTEROZOIC The first volcanic cycle is comprised of tholeiitic mafic MAFIC INTRUSIVE POCKS© metavolcanic flows and sills in the western part of the map area. It becomes progressively more intercalated with metasediments and ^K^VN © QUETICO SUBPROVINCE v 3c ^^x^y ^ f* ^* 11a Diabase felsic tuffaceous horizons to the eas! Pillowed flows are the most , ,,"...i f \ ^, © i ^ abundant mafic metavolcanics These flows are typically 2 to \ l -A KM.hfi©n.tk 11 b Porphyritic diabase 10 m thick and pillow sizes average 0.5 ID 1 O m across Varying V i ,) ,:-, tlc Gabbro degrees of carbonate alteration parallel lo the stratigraphy (and foliation) was observed in some units Exposures of thick, massive INTRUSIVE CONTACT flows and sills were observed in Ihe McGovern Lake area Figure 2 shows that the dominant geochemical trend of Ihe HURONIAN SUPERGROUP metavolcanics is towards iron enrichment Eastward into Davieaux COBALT GROUP Township, the mafic metavolcanics are increasingly interbedded Gowganda Formation A S V D with metasedimenls and felsic tuffaceous rocks, suggesting a ""-©"of?* Yf-5? "^. \ change from a proxima© source environment in the west to a more fallft i tf-;"| ljns W\ b Wacke, conglomerate, siltstone BL SUBP ROVINC E distal redeposited environment in the east, Tne sequence of mafic . V~/^©^., , V\ — f 'r' t'm lo intermediate metavolcanics in the northeastern part of Ihe map UNCONFORMITY area is comprised of a sequence of pillowed and massive mafic flows with interbedded clastic metasediments ARCHEAN Metasediments are more abundant at the base of the the LATE ARCHEAN eastern volcanic cycle, as indicated by exposures east of Cowie FELSIC INTRUSIVE AND RELATED METAMORPHIC ROCKS Lake, along the north bank of the Montreal River reservoir, and the south limb of The syncline in Schembri and Moggy townships In these two townships the character of the metasedtments indicates 6 Undifferentiated a transition from an early distal to a more proximal mafic plain 6a Granite environment The clastic metasediments are for the most part 6b Quartz monzonite derived from weathering ol the volcanic sequence. Tnis suggests 47 If)© Li 17 15" 6c Granodiorite thai this area was less active volcanically than other areas to the 8-i-.©u west 6d Trondhjemite 6e Tonalite Development of the central sedimentary basin started during the early stages of the eastern volcanic cycle. This is evidenced quartz * plagioclase * sericite actinolite (hornblende) 4- paleomagnetic studies. Shaw (1985) has shown thai at least four chean supracrustal rocks are more common in The eastern and References and Bibliography Thompson, J.E. SYMBOLS 6f Syenite-monzonite-syenodiorite by the coarse clastic metasediments and debris flows present in zoisite. The ferromagnesian mineral content varies wilh composi ages of diabase dikes occur in Ihe area: Late Archean northeastern parts of the belt, where they occur within the calc- 1954: Geology of the Mamainse Point Copper Area; Ontario De 6g Pegmatite the northern part of the Runnalls and Raaflaub Townships. This tion Metasediments display a wide range of melamorphic mineral {Matachewan. 2647 Ma old). Sudbury, post-Huronian. and alkalic metavolcanic sequence. Many small sulphide occurrences Annells, R.N. partment cf Mines Annual Report for 1953 Volume 62. Part 6h Aplite assemblages in the Shear Gneissosity; sequence fines upwards, becoming increasingly turbidite-like. greenschisl facies, notably quartz -t- Keweenawan. The Matachewan-type and Sudbury dikes have have been reported in Gapp. Lunkie Way-White, Running. Run 1973 Proterozoic Flood Basalts of Eastern Lake Superior The 4, 25p Accompanied by Map 1953-1. scale 1 inch to 1000 (horizontal, inclined, plagioclase 6i Massive deep-water facies metasediments The central sedimentary basin biotite chlorite i sericite epidote in the wackes, been documented by the paleomagnetic work of Shaw (1985) the nalls, and Schembri Townships. These occurrences are primarily a Keweenawan Volcanic Rocks of the Mamainse Point Area. feel vertical) appears to be conformable ovei the northern group of rocks in the quartz 4 feldspar biotite chlorite epidote sericite in the post-Huronian dike cross cuts a Huronian outlier (Grunsky and volcanic interflow accumulation of sulphides, consisting of pyrite, Ontario, Geological Survey of Canada. Paper 72-10. 51p.. 2 Multiple (old, arrow 6j Strongly foliated siltstone and chlonle - biotite * feldspar ± quartz sericite in Arengi 1977} and the Keweenawan dikes are associated with pyrrhotite, and chalcopyrite. More significant amounts of sulphides plates. 4 figures, and 1 table. Wilson. B C. indicates plunge 6k Moderately foliated Runnalls-Raaflaub Townships area and in areas to the easl and Foliation; (horizontal, the a-gilhtes. Keweewawan volcanics. Corfu and Grunsky (in press) also nave occur in Gapp and Runnalls Townships, where felsic pyroclastic 1983: Geology of Ihe Percy Lake-Rotunda Lake Areas. Districts of southeast The southern margin of the basin is marked by a Blecha. M inclined, vertical) 61 Weakly foliated suggested that a titanite age of 2647 Ma from a crystal tuff in rocks are more abundant Alteration zones which are commonly Algoma and Sudbury Ontario Geological Survey. Report distinct fault in the Davieaux-Olsen Townships area This fault was Zones of anatexis and assimilation of the supracrustal rocks 1974: Batchawana Area-A Possible Precambrian Area of bedrock 6m Porphyritic are most common in the northern and western part of the belt In Nahwegezhic Township is the resull of resetting by the intrusion associated with large deposits of massive sulphides have not Porphyry Copper 229, 32p. Accompanied by Map 2478 scale 1:31 640 or 1 probably active from at least the top of the first (western) volcanic District, CIM Bulletin. August 1974. p.71-76. outcrop 6n Breccia cycle since no volcanics of the second cycle overlie this group the Tronsen-Tolmonen-Raaflaub-Home Townships area, the meta of a diabase dike less than 10 m away, thus indirectly dating the previously been identified in the area, although zones o! car inch to 1 /2 mile. Banding; (horizontal, inclined, vertical) 60 Migmatitic-paragneiss The calc-alkalic cycle of volcanics is marked by the presence morphic rank of the supracrustal rocks (metasediments and mafic Matachewan intrusions bonatization have been noted in the northern part of Gapp Town Card, K.D Bedding, top 6p Orthogneiss of coarse felsic metavolcanic breccias of calc-alkalic affinity volcanic rocks) is upper amphibolite accompanied by partial mell Siragusa (1982) has presented an overview of Ihe characteris ship by the author Base metal occurrences in the western part of 1979: Regional Geological Synthesis. Central Superior Province, unknown; (inclined, Figure 1: Litho-tectomc subdivisions of part of the Superior Province (from Card 19791 ing and recrystalli2alion with Ine development of coarse-grained tic feature? of the diabase dikes as follows; the map area (Palmer. Ryan. Wishart, Olsen Townships) are less p 87-90 in Current Research. Part A. Geological Survey of Lineation with 6q With biotile (Figure 3) that overlie a significant accumulation of ironstone in MINERAL OCCURRENCES OF THE BATCHAWANA AREA vertical) ASVD Abitibi Swayze Volcanic Domain BeVD Benny Volcanic Domain WRPD White River Plutonic Domain the Cowie Lake area and grade northeastward into calc-alkalic quartz and lit-par-lit neosome. This rank of metamorphism accom "Diabase dikes, dominantly northwest-trending, are a common than in the east This area is primarily underlain by mafic Canada. Paper 79-1A, 1979. plunge 6r With hornblende panied by anatexis is found only in the northwestern pan ol the metavolcanics with minor intercalated sulphide-bearing units, but PGD Peterlong Gneiss Domain AgGD Algomg Gneiss Domain SVD Schreiber Volcanic Domain and tholeiitic basalts. The calc-alkalic metavolcanic sequence is prominent feature throughout the Batchawana-Qumn Lake Corfu. F., and Grunsky. E.C P TDD. T o w n s h i f. Commodity Deezraption 6x Containing xenoliths supracrustal belt This may be due to the higher water content no observed massive-sulphide type alteration assemblages. The Bedding, top Geological RGD Ramsey intercalated with mafic metavolcanic flows from the northwest. area, and are even more numerous than can be shown on the No. Gneiss Domain LGD Levack Gneiss Domain MGD Manitouwadge Gneiss Domain within the metasediments which would allow for more extensive abundance of sulphide-rich interflow units increases near the top 1987 Igneous Tectonic Evolution of the Batchawana Green indicated by arrow. boundary, posilion The sequence tops to the south and is overturned, (bedding and map Foliation in the melavolcanics. and northwest-trending {inclined, vertical, INTRUSIVE CONTACT BVD Biscotasing Volcanic Domain SA Shawmere Anorthosile Complex MVD Manitouwadge Volcanic Domain fluid migration for recrystallization. oJ the sequence in the Tronsen-Davieaux Townships area. stone Belt. Superior Province; U/Pb Zircon Titanite Study, Larsen interpreted schistosity dipping north) The felsic metavolcanic sequence con regional fractures in ali the Archean rocks are apparently the Journal ol Geology Volume 95, Numbnr 1, p. 87 105 U overturned BaVD Batchewana Volcanic Domain CGD Chapleau Gneiss Domain SaVD Saganash Volcanic Domain tains increasingly finer clasts and is progressively more sedimen main factors which controlled ihe emplacement of diabase Copper associated with Proterozoic rocks is commonly found [.arson U EARLY MAFIC INTRUSIVE ROCKS (METAMORPHOSED) AgFD Algoma Plutonic Domain AGO Anjigami Gneiss Domain CPD Caramat Paragneiss Domain tary in character near the top of Ihe sequence (southeast) These in Iwo associations: native copper with barite in fissure-vein struc Giblin. P.E. Larson U Lineament or fault The thickness ol the dikes vanes from about O 5 m to about Bedding, top (arrow) finer metavolcanics extend northwest and into Way-White and Structural Geology tures within the Keweenawan volcanic sequence, and 1969. Mamainse Point Area, District of Algoma: Ontario Department Larson py Mineralized shear ~ o r. e WVD Wawa Volcanic Domain 120 m, measured in a dike exposed over a length of 275 m in Home from gram gradation; 5a Diabase Runnalls Townships, where the luffs become increasingly distal in chalcopyrite-molybdenite-scheelile within intrusive porphyry-brec of Mines. Preliminary Geological Map P.554. scale 1 inch to u The supracrustal rocks of the Batchawana belt can be divided into Desbiens Township Occurrences of variably strained Home Cu (inclined, vertical, Lineament 5b Gabbro character and are interbedded with metasediments. The geoch supracrustal rocks ©sandwiched© between closely spaced cia systems. Several fissure-vein systems occur within the vol 1/4 mile (V15 840). Loach Mineralized shear zan? ronology of the felsic luffs in the central part ot Desbiens Town two tectonic domains which are distinctly defined by their fabric canic sequence at Mamainse Point, the most important being the py overturned) and deformational structures. The earliest structural fabric is a diabase dikes are not uncommon in the Batchawana-Quinn Giblin, P.E., and Armburst. G.A. Loach py Mineral ize-d shear zone Jointing; (horizontal, INTRUSIVE CONTACT ship show that these are the youngesl known supracrustal rocks Lake area: because of this, clusters of diabase outcrops Coppercorp Mine from which 1 294247 tons of ore at 2 TVi Cu Raaflaub Mineralized shear zone northeast-trending schistosity which occurs parallel to the north 1973 Balchawana Algoma District. Ontario: Ontario Division of py Bedding, inclinea, vertical) in the belt (Corfu and Grunsky, in press). It is not known conclu showing no clear evidence of a preferred trend were generally was recovered. The Tribag Mine area consists of a series of Raaflaub py Mineralized shear zone top (arrow) east trend of the first volcanic cycle. Occuring primarily in the Mines, Map 2251, scale 1 inch to 1 mile. from crossbedding; METASEDIMENTS sively whether or not the felsic metavolcanics in ihe Neill Town interpreted as areas underlain by two or more parallel or breccia pipes in the southeastern part of Nicolet Township The Hadley py Rusty zone metavolcanics ot Palmer, Wishart. Olsen, and Davieaux Town (inclined, vertical, Drag folds with CHEMICAL METASEDIMENTS ship area are contemporaneous with the northeastern group of converging dikes, rather than by a unique wide dike. Some of Breton Pipe, the main Tribag ore zone, produced 37 257 993 Grunsky. E.C. McAughey py Iron forma11on with seme malic metavolcanics as oulcrop abundance is low in that area. ships. The schistosity follows a regular trend, except where it pounds ol Cu and 246 054 ounces of silver. The west breccia pyrile overturned) plunge follows the margin of the Griffin Lake Stock in Norberg Township. these clusters, however, are interpreted as isolated small 1980 Geology of the Cowie Lake Area. District of Algoma: Ontario McAughe-y The mafic metavolcanics of the second cycle are-composed intrusions of local character fe.g Dismal Lake area. Way-White zone was recently explored by the DeKalb Syndicate which out Geological Survey. Report 1*92, 67p. Accompanied by Map 4a Magnetite-chert ironstone In the northeastern part of Davieaux Township, the schistosity lined 28 000 tons ot Q.87% WO3 and 40 000 tons of g.0% Cu M^Aughey Banded layers with some Lava How; top in primarily ol pillowed basalts with intercalated melasediments The Township). The dikes have fine-grained to glassy chill 2426. scale 1.31 6BO or 1 inch to 1/2 mile. pyrite Anticline, syncline, 4c Chert becomes predominantly northwestern trending. The trend changes although no ore was ever removed The Jogran Porphyry deposit directon ol arrow with plunge pillowed units are typically 5 to 10 m thick with a fine- lo medium- abruptly and is marked by several faults and shear zones. The margins, commonly contain pyrilic disseminations, and may be 1981 Geology of the Grey Owl Lake Area, District of Algoma, u 4d Cherl-pynte ironstone grained chilled flow base, a medium- to coarse-grained flow cen locally porphyritic with altered plagioclase phenocrysts up to containing Cu-Mo-Ag mineralization, occurs in Ryan Township al Ontario Geological Survey, Report 205. 76p Accompanied M ~ A u g h f? y li central sedimentary basin in Vibert. Tronsen. Raaflaub, and Run- the north end of Mamainse Lake No tonnage figures for the TABLE 1. GEOLOGICAL REPORTS AND MAPS OF THE BATCHAWANA AREA. tre, followed by a pillowed layer constituting approximately 30lo to 6 cm in size by Map 2446, scale 131 680 or 1 inch to 1/2 mile. Runnal Is py Lava flow; top Shaft; depth m teet CLASTIC METASEDIMENTS nans Townships displays irregular bedding and schistosity fabrics. deposit have been reported, although exploration has indicated 400/* of the flow thickness, then a fine-grained pillow breccia In The diabase is massive, fresh-looking, grey-green to dark Runnal -s p y Minera-izec shear zone (arrow) from pillows Year Author Area Publisher This is due to the local deformation caused by the intrusion of the that the dimensions ol the ore body are estimated to be 600 feel Grunsky. E.C., and Arengi, J.T. Runnal is qv Quartz vein shape and packing the zones of higher metamorphic rank (Cow River area), these Mongoose Lake and Grey Owl Lake Stocks. The sedimentary basin green, with a gram size of 1 to 8 mm The rock weathers lo a Age of rock in Ma 3a Undifferentiated typical flow subdivisions zones can still be recognized Com- in diameter to a minimum depth of 680 feet, with an average 1977 Cowie Lake Area. District of Algoma Ontario Geological Rurnal Is py Diorite intrusive with 1925 E.S. Moore East Part of ODM Vol. 34 Pt. 4 is bounded by a maior east-trending fault in Olsen and Davieaux uniform or mottled brown, which typically penetrates the rock 3b Ouartz-plagioclase biotite hornblende schist positionaliy these rocks are tholeiitic (Figure 4). grade of 0.19a/* Cu. 0053 0A MoS2 and locally, high grades of Ag Survey, Preliminary Map P 1562, Geological Series, scale some pyrite Schistosity; Dike observed; Interpreted from Batchawana Belt Townships and is non-comformable with the tholeiitic rocks of the fo© only a few millimetres. A red-brown weathered surface is Run nal i s p y pa Cu of up to 208 ounces per ton. The porphyries and breccias of the 1:15840. Geology 1977 (horizontal, inclined, Geophysics; Interpreted from 3c Wacke 1926 E.S. Moore West Part of ODM Vol. 35 Pt. 2 The metasedimentary domain within the central portion of the firs! cycle The sedimentary basin conformably overlies the sec characteristic, although not necessarily diagnostic, of olivine- Ru nna lls py Quartz veir. with s^me Keweenawan have been classifieo and discussed by Blecha vertical) Topography 3d Arenite Batchawana Belt bell is comprised of conglomerates, wackes, and turbidiles. Envi ond cycle of calc-alkalic and tholeiitic volcanism, as shown by beanng diabase " Keevil. N.B. pyrite mineralization (1974). 3e Siltstone, 1936 N.B. Keevil N.East Part of GSC Map 366 A ronmental indicators suggest a deep-water submarine fan origin. transitional facies sequences in Way-White and Runnalls Town The dikes shown on the maps are interpreted from geophysi 1936: Cow River Ares: Geological Survey of Canada, Map 36GA. F. u P. n a 1 1 s p y Quartz vein with some banded siltstone Batchawana Belt The wacke units are typically intermediate in terms ol comparable cal anomalies, and topographic outcrop exposures Due to the Uranium scale 1 inch to 2 miles Geology 1936. pyrite mineralization 3f Mudstone ships Runnal Is p y Cu Goulais River Iron ODM Vo! 55 Pt. 4 volcanic composition and are interpreted as being derived from large number of dikes, not all of them could be shown on the 1946 E.S. Moore H.S. A major northwest-trending, eastward-dipping synclinal axis Uranium was first discovered in Canada at Theano Point on the Moore, E.S. Runnalls Ag Au 3g Pelite and metamorphic equivalents Armstrong Range the weathering of earlier volcanic deposits of the first o* second maps. extends from the northwest corner of Lunkie Township lo Runnalls eastern shore of Lake Superior Numerous discoveries of uranium 1926: Mississagi Reserve and the Goulais River Iron Ranges. Runnalls Cu Au po py 3h Pebble conglomerate 1953 Jas E Thomson Mamainse ODM Vol 62 Pt. 4 cycle Wackes are common in Ihe area southeast of Cowie Lake, Runnal is overlying the Goulais Rtver iron Range, within the mafic metavol Township and marks the zone of juxtaposition of the later calc- have been reported in the northweslern part of the map area. District ol Algoma: Ontario Department ol Mines. Annual Cu Z r. Pt. Au 3i Cobble conglomerate Poml-Keweenawan alkalic volcanic cycle with the tholeiitic volcanic rocks of the first Although significant exploration work has been performed on the Runnal Is Cu Z r. Ni SOURCES OF INFORMATION Vol canic sequence in the Cow River area, in the northern part of ihe Economic Geology Report (or 1925. Volume 34. Par! 4, p.1-33. Accompanied by P!J Ag 3n Paraconglomerate metasedimentary sequence north of Grey Owl Lake, and in the cycle. This northwesterly trend is the dominant schistosity of the Theano Point discovery (Camray Mines Limited) and the Hanson Map 34d. scale 1 inch to 1 mile. 3o Graphite 1955 E.W Nuffield Montreal River ODM Vol. 64 Pt, 3 southeastern part of the belt The second cycle of volcanic rocks dike in Peever Township (Ranwick Uranium Mines Limited) neither Runnalls py liT&d r a r. e Ba?e map derived trom Map 41 N/8 (Grey Owl Lake} of the Mekalina lo Spruce Lake area. Commonly associated with the A total of 320 mineral occurrences, properties, and deposits have 1927: Batchawana Area, Algoma District, Ontario Department of Runnal Is Mineralized zone 1964 P.E Giblin Nicolet Township ODM P 361 are overturned and possibly thrust over the earlier tholeiitic vol have ever been operating mines py National "!opogr Hphic Series. 3p Pebbly 1965 P.E. Giblin Palmer Township ODM P 710 wackes in all of Ihe above-mentioned areas are monolithic and been located within the balchawana area There have been two Mines Annual Report for 1926. Volume 35, Part 2. p.53-85 Runnalls py t Au J Mineralized zone canic rocks. This appears to be Ihe case in the Desbiens-Lunkie The genesis 3q Gritty 1965 P.E Giblin Ryan Township ODM F 555 heterolithic conglomerates that represent debris deposits. Con major copper producers (Proterozoic age) and a number of small of the uranium concentration is attributed lo the Runnalls po py Au Townships area where a northeast-dipping syncline is overturned intrusion of diabase dikes within the Chapleau Gneiss Domain Moore, E.S., and Armstrong, H.S. Runnalls 3r Reworked tuff 1965 G.A. Armburst Wishart Township ODM F 364 glomerates are found within the turbidite sequence but are less uranium deposits No Archean base metal deposits of any signifi py For a complete list of sources ol information, see Table 1. common. The turbidiles are commonly graded and vary in thick and intersects major east-trending faults in Davieaux Township. cant size have been discovered Iron reserves in the Goulais River where low regional radioactivity is known to exist A regional low 1948 Iron Deposits in the District ot Algoma: Ontario Department Runnalls Cu 3s Gneissic 1965 G.A. Armburst Olsen Township ODM P 363 Runnalls Cu Z r. Au ness from 5 mm to 2C cm They occur in the War; Lake area and The axial plane of the overturned syncline was reactivated as a Iron Range are currently considered too small and uneconomic to grade radioactive anomaly was outlined in Ihe Loach-Larsen of Mines. Annual Heport for 1S46 Volume 55, Part 4, Magnetic declination approximately 7 4© in 1986. 3t Migmatitic 1966 P.E. Giblin Kincaid Township ODM F 553 thrust zone between the early first cycle tholeiitic volcanism and Ag py po northward into Runnalls Township, they reflect a deep water envi mine Presently, the most promising commodity within the area is Townships area of the Chapleau Gneiss Domain in the late 1970s p.1-118. 1967 P.E Giblin Norberg Township ODM F 359 the second cycle. Runnal Is py 1967 P F Giblin Mamainse Point ODM P 554 ronment. gold The Chapleau Gneiss Domain has a large number of pegmatitic Metric Ccnveision Factor. 1 foot ~ 0.3046 m rocks associated with it, particularly near the Montreal River reser Nuffield. E.W Runnal Is PX METAVOLCANICS 1968 P E Giblin Fisher Township ODM P 557 The northwesterly trending syncline merge? with a northeast Iron is present as magnetite-chert ironstone accumulates with Hallett Mineralized zone erly trending syncline in Runnalls Township and provides evidence voir This area is generally higher in radiogenic rocks relative to 1956. Geology of the Montreal River Area; Ontario Department of py FELSIC TO INTERMEDIATE METAVOLCANICS 1965 P-E Giblin Herrick Township ODM P 556 in the supracrustal volcanic sequence in several areas of the belt Mines, Annual Report lor 1955, Volume Mcparland Pyrrhotite mineralized ihat these two volcanic domains are part of the same sequence. Ihe Ramsey Gneiss Domain to the southeast. 55. Part 3, 32p. in basic lavas 1972 R.N. Annells Mamainse Point 8, GSC Paper 72-10 Metamorphism The greatest accumulation of magnetite-chert occurs in the Accompanied by Map 1955-1, scale 1.31 680 1 inch to 1/2 Alona Bay The northeastern volcanic rocks of the Cow River area are a distal Goulais River Iron Range within Nahwegezhic and Gapp Town Precious Metals Running l" ©.J Quartz vein 2a Undifferentiated mile. Running A g A j C u Batchawana-Pangis* OGS P 998, OFR 5345 facies equivalent of the volcanic rocks in Gapp Township The ships A northern extension occurs in ihe northern part ol Gapp 2b Flows 1973 G.M Siragusa Metamorphism in the area can be subdivided into regional Gold and silver occurrences within the area appear to be re Running Au Ag (Western Half) dominant structural grain of the northeastern gioup is a north Township Thp deposit is held by the Algoma Steel Corporation Shaw. E. greenschisl-amphibolite facies throughout the supracrustal se stricted to the central and south-central part ol the supracrustal Larsen U CREDITS 2c Ash-crystal luff Batchawana-Pangis OGS P 1 193 easterly trending schistosity 1974 G.M Siragusa quence and varying degrees of anatexis in the western and Limited and currently the reserves arc estimated at 30 480 000 sequence Traces of gold and silver have been reported from 1965 Precambrian Dikes in the Eastern Lake Superior Region and 2d Lapilli-ash-crystal tuff, lapillistone (Eastern Half) The northwesterly trend within the belt is part of a major tons of iron pellets Significant exploration work was earned out in their Use m Defining Crustal Rotation; Unpublished M.Se. eastern part of the supracrustai-plutonic boundary zones Contact some of the- interflow sulphide-bearing units within the volcanic Geology by E.C. irunsky and assistants, 1981 to 198-1. Compiled 1975 G.M Siragusa Oumn Lake (Western OGS P 1633 legionai lineament and fault trend within the south-central part of the area during ihe 1940s, I9b0s, ana 1960s, however the deposn Thesis. University ol Toronto, I62p. 2e Tuff breccia metamorphism associated with the later massive plutons within sequences in Ihe Runnalls Township area and in southeastern by t.C. Grunsky Half) the southern part of the Superior Province This has controlled the is currently not considered to be economic Magnetite-chert iron 1981 lo 19B6. 2i Gneissic the supracrustal rocks is of the hornblende-hornfels rank The Gapp Township The most significant gold prospect to dale is that Siragusa, G M. 1976 G.M Siragusa Quinn Lake (Eastern OGS P 1634 network of diabase dikes that have intruded the area in at least stone also occurs in the northern pan of Palmer Township soulh of ABBREVIATIONS regional metamorphic patterns within the supracrustal sequence currently held by Massive Energy Corporation, in a zone south of Half) four episodes (Shaw 19B5) Pancake Lake. A lest pit was developed and approximately 1975. Batchawana-Pangis Area (Western Half). District of Algoma: Every possible effort has been made to ensure the accuracy of MAFIC TO INTERMEDIATE METAVOLCANICS define a zone of amphibolite rank metamorphic rocks near the Spruce Lake tn Davieaux Township Two occurrences containing 1977 E.C Grunsky Cowie Lake OGS P 1562, GP 192 A northeasterly lineament and fault trend is also present 200 000 tons of ore containing 26 to 29"/o Fe have been outlined Ontario Division of Mines. Preliminary Map P 996. Geologi Ag...... Silver Pb ...... ,...... Lead the information presented on this map. however, the Ontario Min plutonic rocks, and greenschist facies mineral assemblages in the significant gold values have been located along a sulphide lacies 1978 E.C. Grunsky Grey Owl Lake OGS P 1562, GR 205 within the area, and although not as abundani in terms of num A smaller unit of magnetite-chert ironstone occurs in the southern cal Series, scale 1:15 840. istry of Northern Development and Mines does not assume any l Undifferentiated rocks further into the core o* the supracrustal belt The mafic ironstone (Massive Energy Corporation) The gold is concentrated Au...... - ...... Gold po .,...... Pyrrhotite 1979 BC Wilson Rotunda-Percy Lake OGS P 2363, OFR 5309 metavolcanics are typically hornblende -*- plagioclase garnet T bers, the lineaments and faults are long l ^5 km), extending part of Palmer Township: it is not ol sufficient width lo be consid 1976: Baichawana-Pangis Area (Eastern Halt). District of Algoma. liability for errors thai may occur Users may wish to verify critical 1a Fine-grained flows (Western Half) westward inlo Lake Superior Fealures such as the Montreal River ered economic. Isolated maanptitp-cheri interbed units occur in along shears within Ihe sulphide zones and exploration at this Ontario Division of Mines, Preliminary Map P 1193. Geologi Co...... Cobalt py ...... ,....,.,.,.,.,...,. Pyrite information, sources include both the references listed here, and epidote schists, and contain variable amounts of leldspar or epi time nas outlined palchy mineralization The area is also inter 1b Medium to coarse-grained flows 1979 B. C Wilson Rotunda-Percy Lake OGS P 2364, OFR 5309 dote veinmg within zones that have undergone metamorphic seg Fault, the Goulais River Fault and the Balchawana Rive© several places within the Balchawana belt, northeast Runnalls cal Series, scale 1 15 840 or 1 inch to 1- 4 mile. cp ...... ,....,.,.,,, Chalcopyrite q...... Quartz information on file at the Resident Geologist©s Office and the (Eastern Half) Lineament©Fault define this northeasterly trend, and are related to Township, east ol Wart Lake in Vibert Township, several zones- sected by some large east-tiending taults that are possibly related 1978a© Quinn Lake Area (Western Half). District of Algoma; Ontario Mining Recorder©,1; Office nearest the map area. 1c Pillowed flows regation. The felsic to intermediate metavolcanics are commonly lo the development of the second Cu.....,...,,....,.,.,,.,,..,..,.. Copper qv ,,..,.,,.,.,...... ,., Quartz vein 1982 G.M Siragusa Oumn Lake Area OGS MP 104 the Kapuskasing Subprovmce Structural Zone. These taults may near the southern boundary of the supracrustal sequence in cycle of volcanism arid Ihe Geological Survey. Preliminary Map P 1833. Geological Se 1d Massive flows transformed into fine- to medium-grained quartz H- plagioclase -* sedimentary basin to the north m Tronsen and Vibert Townships. 1983 B.C. Wilson Rotunda-Percy Lake GR 229 muscovite hornblende garnet schists be related to the early development of regional structural patterns Schembri Township; ana remnants of the Goulais River Iron Range ries, scale 1 15 840 or 1 inch to 1 - 4 mile Fe ...... ,...... Iron serp ...,,.,.,,.,,...,.., Serpentine Issued 1987 1e Lapilli-ash-crystal tuff 1983 G.M Siragusa Rand Lake Map 2478. 2479 of at least 2715 Ma and have a history lhat extends into within the gneissic tonalrtes in Pine Township All of these unilt Gold mineralization may be concentrated along this large fault Most of the metasediments are volcanicaliy denveci and the system trending east-west from Gapp Township to Olsen Town 1978b: Quinn Lake Area (Eastern Half), District of Algoma: Ontario gf...... ,,.,.,.,.,.,..,. Graphite *h ,...... ,.,.,.,.....,,.,.,. Shale 1f Lapilli tuff-tuff breccia 1984 G.M Siragusa Wart Lake Map 2480 Keweenawan and the subsequent development of the Late Supe are thin, discontinuous and less than 100 m in strike length Geological Survey, Preliminary Map P 1K34, Geological Se chemistry is similar to the metavolcamcs Thus, their metamorphic ship Associated with this fault system is extensive carbonatiza Inlormation from this publication map be quoted if credit is given. 1h Gneiss rior Basin ries, scale 1 15 840 gn ....,...,.,..,,.,.,.,.,.,., Galena si,,,,.....,.,...,...,,.,.,..,,.. Silica Abbreviations assemblages are typically those associated with the volcanic tion The caibonate alteration, and the gold discoveries of Massive Is is recommended 1h9t reference lo this map be made in the 1i Amphibolite hem .....,,,,..,,.,.,.,.,., Hematite si....,....,.,.,....,.,.,,..,.,.,.. Slat* following form 1 OGS Ontario Geological Survey rocks, i.e.. hornblende -*- plagioclase biotite quart: mus Energy Corporation, are situated in proximity to this system 1982© Geology ot the Oumn l ake Area. District of Algoma: Ontario 1j Migmatitic covite garnet Staurolite-beanng schists are present Base Metals ODM - Ontario Department ol Mines m the Grev Diabase Dikes Geological Survey Miscellaneous Paper 104. lip. Accom If ,...,,,,,,,,.,,,, Iron formation sp.,..,.....,.,.,.,..,,.,, Sphalerite GSC - Geological Survey of Canaaa Owl Lake and the central metasedimentary basin in the Wart ..ake The most abundant type of mineral occurrence in the area is the Acknowledgments panied by Preliminary Map P 25HO scale 1 15 840 or 1 inch area. Typicai greenschist assemblages for the mafic mag .,,..,,.,,,.,.,.,,.. Magnetite spec.,,,,.,.,.,.,.,,. Specularite Grunsky. E.C, P - Preliminary Map metavol "ihe Batchawana area has been intruded by a large number of base metal type. Copper, zinc and minor amounts ol lead occur to a 1.©4 mile Notes OFR - Open File Report canics are plagioclase ± epidote r sericite chlorite and didfcase dikes These dike;^ are mainly tholeiitic in composition throughout the Archean supracrustal rocks Copper, molybdenum The author was ably assisted during the field work by Mr. R Reid 1966 Geology of the Batchawana-Pangis Area. District of Algoma; Mg ,.,,,,,.,.,.,...,, Magnesium U .,,.,..,....,,.,.....,.,,.. Uranium 1967: Precambrian Geology of tne Balchawana Synoptic Project plagioclase actinolite epidote chlorite Textures are usual 1 ; (Figure 51 Thp predominant strike of tne dikes is northwest, which and tungsten occur in association with and Mr G Macmaster Integration of held data with laboralory. Area. Gre\ Owl Lake Sheet. District of Algoma Ontario These rocks are of varying ages from late Archean to Post GR - Geological Repon Ihe Proterozoic rocks as Ontario Geological Survey. Heport IM3 56p Accompanied Mo ,,,,.,..,..,..,,,, Molybdenum W ,,,,,,,.,.,.,.,....,,.. Tungsten Huronian MP - Miscellaneous Paper preserved in the lower rank metamorphic rocks The greenschist toilc-w? the tectonic fabric of the area Northeast-trending dikes epigenetic fissure-vein deposits (Coppercorp Mine) and breccia assessment, and report delta was provided by Mr Fi Reid. Ms. S. by Maps 2479" and 2480. scale l 31 oBO or 1 inch lo 1.2 Geologica. Survey. Map P.3060. Geological Series-Prelimi- mineral assemblages lor the felsic metavolcanics are tvp©caliy a to lalei nnea 1 strut-lures are less common On the basis of pipe deposits (Tribag Mine! Base metal occurrences m the Ar Rice. ;ind Ms J Howe Their assistance is gratefully acnnowl- mile. NI -. ,,.,..,,,.....,-...,,-.. -,. Nickel Zn ,,,...,,..,,.,..,,,,.,,.,., Zinc naiy M.-ip. scale 1:50 000 Geology 1PB1-198-4. All units may not be present on each map edged