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Ministry of Hon. Alan W. Pope MARGINAL NOTES Minister Natural W. T Foster LOCATION AND ACCESS Resources Deputy Minister This map-area consists of the townsiips of Dack and Ontario Beauchamp anc has an area of 184 km? Highway 560 cresses the wes:ern and northern ocrtors of Dack Township and connects with the town of Encj.ehart. just east of the map-area ONTARIO GEOLOGICAL SURVEY The wnoie of Dack and Beauchamp Townships a rc PRELIMINARY MAP P. 2416 readily accessible by all weather, graveled, township roads Beauchamp Township may also be reached by GEOLOGICAL SERIES a gravel ©oad extending north from Kennabekon High way 65. The Beauchamp-Dack Townships map-sheet \ Dack PRECAMBRIAN GEOLOGY adjoins the Bryce-Robillard Townships map-sheet to the west. OF THE MINERAL EXPLORATION HILL LAKE AREA Since ne ea r ly "920s golc has been known to occur Within the map-area. Early prospecting lead to :he dis covery of two prospects. The Hillcrest prospect (No 3), currently held by A. Mowat, s ©ounrj northwest of in the north halt of lot 5. concession VI of BEAUCHAMP Si DACK Dack Township. The Weeks-Simpkins prospect (No 5) is west-southwest ot Englehart, in the south half of Englehart lot 5, concession V of Dack Township. Moorhouse TOWNSHIPS (1941) describes the geology of each prospect. Since 1941 the Hillcrest prosoect has nad an addi tional 20 holes diamond drilled, additional mapping and trenching, as well as a magnetic ano electromag netic survey carried out on it. The Weeks-Simokins prospect has had additional diamond drilling and Scale 1:15840 trencnmg earned out Data Series Maps (Ploeger el y, Mile al 1979) have been published for Dack Township Current claims within the map-sheet ^re he d by J Metres 100 D 1 Kilometre Morris (No 2} anc A Mowat H HH

GENERAL GEOLOGY NTS References©31 M/12, 13 In 192i and 1922 Burrows and Hopkins mapped the ODM-GSC Aeromagnetic Maps: 1493G, 1494G Blanche River area which included Robillard Bryce. ODM Geological Compilation Map: 2205 3eajcnar"p, and Dack Townships (Burrows and Hop kins 1922). In 1940 Moorhouse (1941) mapped the Bryce Robillard a©ea whch includes the lownshios of Tudhope ;Jryce. Robilard. Dack, and Beauchamp OMNR-OGS1981 Thomson (1966) mapped Henwood Township which borders on Beauchamp Township on the south. In Parts ot this publication may be quoted if credi: is given and the material 1972 Lovell (1977) ^apped the Englehart Earlton is properly referenced area, which borders Dack and Beaucnamp Townships on the east. This map is published with the permission of E G Pye. Director, Ontario Rocks exposed m [he map-area cons st of Early Pre Geological Survey. cambrian Komatiitic metavolcanics. pillowed and mas sive mafic metavolcanics and intrusions, intermediate to felsic pyroclastics and a small layered iJlra©^afic intrusion The metavolcanic sequence lias been in truded by foliated trondhjemite of the Round Lake Ba tholith Unconformably overlying the Early Precam brian rocxK are the sedimentary recks o© the Middle Precambrian Gowganda Formation. Both the Early euc.aa:. 81 a.ici ita-i Ld-^©i I.i-mi- and Middle Precambrian rocks have been intruded by aNipiSsng Diabase sill. jensen (1978, 1979} has divided the Early Precam brian metavolcanics in the -Lardo© -ake CHARLTON area into groups. It is possiole to suodivde the Hill Lake area into similar g©oups, In Dack Township the lowest group has an exposed thickness of 2390 m to 3000 m., the basal portion of which has oeen intruded by the Round Lake Batholith These rocKs consist ot dark green, fine-grained, pil lowed mafic flows with associated hyaloclastic brec cia and pillow breccia, massive, medium-grained mafic flows, and thin ultramafic flows with a srna.l ult r a- mafic layered intrusion. Minor inte©meciate to felsic tuffs were also noled In the v cinity of Charlton tne re is a sequence of highly altered mafic and u tramafic ko- iBrewstcr L. ^iftl-.ison ..n KWOK V-©© matiiles (Jensen, pe©sonal communication. 1980) and ••" Tf*et,ft .. ©T . flp,,,, tholeiitic Tiafic flows intruded by syenitic dikes This group is similar to Jensen©s (1978) Wabewawa Group Within Dack Township the top of this group is taken to be the ultramafic flows exposed between Sunday Crook Falls and Trestle Hill or ther aeromagnetic ex pression as seen on the ODM-GSC Aeromagnetic Map 1494G. Overlying [fie Wabewawa Group is a sequence, 4400 LOCATION MAP Scale; 1: 1 584000 m Ihick in Dack Township, of fine-grained pillowed or l inch lo 25 miles mafic flows, interoedded with f ne-grained black, fca tureless. high iron mafic flows These TOCKS are similar to those described as the Catnanne G foup (Jensen 1978). The top ot this group occurs with the com mencement of pyroclastic volcanism. Conformably overlying the mafic mefavolcanics of Ihn LEGENDab Catharine Group is a sentience of intermediate, coarse- to fine-grained pyroclastic rocKs. These rocks are a moderately sorted bedded sequence of lapil:i- PHANEROZOIC tirf, tuff, lapillistone and pyroclastic breccia. The base CENOZOIC of this sequence includes some interbedded mafic pil lowed flows. Jensen (1978) assigned rocks similar to QUATERNARY these rocks to the Skead Group. The top of this se PLEISTOCENE AND RECENT quence was not exposed within the ~ap area, Glacia. glacial-fluvial, swamp, la^e and stream deposits Intruded nto the uasal ocrt on of the Skead Group are sills of medium-grained gabbro West of Mcconnell Rock in Beauchamp Township a srnal irregular UNCONFORMITY shaped body of diorite to gabbro composition is found Fragments of similar material are found as PPECAMBRI.AN clasts wilhir the surrounding pyroclastics Tnis small MIDDLE PRECAMBRIAN intrus ve body may be synvolcamc and part of a con- MAFIC INTRUSIVE ROCKS duil feeding a volcanic vent. NIPISSING D;A8ASE The base of the Wabewawa Group has been intruded by the Rounc Lake Batholith The Round Lake Bathol 13 Unsubd©vided ith consists of gray tc pinK, medium-grained, foliated 13a Diabase , . . . trondhjemite. The contact is in oart intrusive having 13b Granopnyric diabase dikes within the metavolcanics and xenoliths of meta- 13c Diabase, chilled ^argins votcanic "lalerinl willun ©.lin trondhjemite. In the north 13d Aplite eastern corner of Hie map-area the trondhjemite is in fault contact with the metavolcanics. Here the tron tNIHUSIVbCONTACt dhjemite is highly cataclastic while the metavolcanics are highly sheared and very contorted. There is no n- HURONIAN SUPERGROUP trusive relationship between the two rock types COBALT GROUP Unconformably overlying the mefavolcanic sequence Lorrain Formation in the northeastern corner of Dack Township are wacke-matrix supported conglomerates of the Gow- 12 Unsubd©vided ganca Formation of the Cobalt Group of the Huronian 12a Feldspathic arenite Supergroup. These conglomerates are in turn, over 12b Grit to oebble conglome rate lain by gray feldspathic arenites of the Gowganda For mation CONFORMABLE CONTACT Both the Early and Midd©e Precambrian rocks have Gowganda Formation been intruded by Nipiss.ng quartz d abase sills. The full extent of the sill in Beauchamp Township has been 11 Unsubdividcd interpreted us ng the ODM-GSC Aeromagnetic Map 11 a Conglomerate, matr x supported 1493G 1 1 b Conglomerate, das: supported I le Thickly laminated red siltstone, shale anc wacke STRUCTURAL GEOLOGY Ud Thickly laminated green-gray siltstone and shale In southern and western Dack and northern Beau II e Feldspathic arenite champ Townships the mctavolcanics strike no riheast 1 if Breccia dike ward, have vertical to near vertical d ps, and are 1 ©g Wacke younger to the southeast. This section of the metavol canics has, in part, been overturned. In the northeast UNCONFORMITY ern quadrant of the map-area the strikes swing to the north northeast and the metavolcanics have been EARLY PRLCAV1BRIAN overturned and are younger to tne southeast. Closer to UNMETAMORPHOSED MAHC INTRUSIVE ROCKS the Round Lake Batholith ;he metavolcanics become highly schistose and contorted The fo lalion in the 10 Unsubdivided trondhjemite has nn naslerly Lend which is discordant 10a Diabase to the contact wi©.ti the rnetavolcan cs. 10b Porpnyntic diabase (feldspar phenocryst)

In southern Dack and northern Bcauchamo Town INTRUSIVE CONTACT ships the older faults have north-northwest or notherly trends Northeast-trending faults have been proposed MAFIC ALKALIC INTRUS©VL ROCKS to pass through Sunday Creek Falls where highly sheared ultramafic rocks are observed at the base ot 9 Unsubdivided the falls. A ong Highway 560 at Trestle Hill a number of 9a Syenite lamprophyre northeast-trending shear zones can be seen intersect 9b Pebnle-beariny syenite lamprophyre ing the ultramafic metavolcanics The contact be tween the Round Lake Batholiln and the Wabewawa INTRUSIVE CONTACT Group of metavolcanics in northeastern Dack Town ship is a curvilinear fault trend ng northeast. The tron PFLSIC TO INTERMEDIATE ©NTRUSIVE ROCKS dhjemite is highly cataclastic and strongly sheared and the metavolcanics a-e composed of highly con 8 Unsubd©vided torted amphibolite schists. There is no evidence for an 8a Trondhjemite intrusive relationship between the two rock types ir 8b Quartz monzonite this location. 8d Aplite The northwest- to north-northwest-trending Lake Tim- 8e Felsite iSKaming West Shore Fault is associated with the i ake Bf Cataclastic trondhjemite Timiskaming Rift Valley (Lovell arid Caine 1970). The 8g Contaminated trondhjemite, diorite existence of tne other northwest-trending faults, as 8h TrondhjemitR with mafic metavolcanic xenoliths sumed to be associated with the Lake Timiskaming 8] Mylonite Rift Valley, are based primarily on geophysical evi 8k Syenite dikes dence seen on the ODM-GSC Aeromagnet c Maps 1493G and 1494G INTRUSIVE CONTACT Upon examining the topographic featu-es on the METAMORPHOSED FELSIC TQ INTERMEDIATE INTRUSIVE Bryce Robillard Townships and Beauchamp-Daek ROCKS Townships map-sheels it appears that Sunday Creek (-© X M , a©**/ v--?. Y-M- is approximately alligned with the -- ^ L^ ^- x "Palmer-Vaughan-Estival Break" as seen in Bryce ?9 M \ x 7 Unsubdivided Township. It is poss©ble that ©his fault zone cxtencs /e" r^ -1 x 7a Quartz oorphyry ?tf^e T ^/i" l li ^©^ -. , ZT /*\^ 7b Feldspar porphyn/ into Dack Township and the valley of Sunday Creek is ^ X ^^ H rf^ ^ the surface expression of this faut The author pro- 7c Quartz-feldspar oorphyry ooses that this s a continuous fault zone. 7d Feldspar-quartz porphyry 7c Felsite ECONOMIC GEOLOGY 7f Caroonatized ,©NTRUSiVE CONTACT METAMORPHOSED MA©IC INTRUSIVE ROCKS Prospecting for gold has been active within the map- area. Although tne lack of oulc©op precludes the dis 6 Unsubdivided covery of many gold showings, two prospects have - © 6a Diorite been discovered The Hillcrest prospect northwest of 6b Gaboro Englehart, has been prospected since 1929. The main 6c Porphyritic gabbro (feldspar pheriocrysts) showing is founc along a N38C to 453E shear zone. The shear zone is heavily carbonatized and contains fuch 6d Melancx;ratic gabbro 6e Diabase site and a 60 to 90 cm wide quartz vein. About 100 m of trench©ng has exposed the vein and sampling has INTRUSIVE CONTACT indicated values of 0.20 ounces gold per ton over 2.8 feet for a strike length of 200 feet (Moorhouse 1941) CHARLTON ULTRAMAF C INTRUSION Diamond dMIing earned out in 1939-©941 has indi cated gold valjes ranging from 00? to 0.24 ounces 5a Dunite gold per ton over 5 feet for a distance of 225 feet 5b Peridotite (Moorhouse 1941). A grab sample taken from the 5c Pyroxenite fuchsite carbonate shear zone by the field party, as 5d Leucocratic hornblende diorite sayed by the Geoscience ^aboratO©V, Ontario Geo og- 5e Ca©Qonatized ical Survey. , contained 0.02 ounces gold per 5f Serpentinized ton. 5g Variolitic mafic cike The Weeks-Simpkms prospect is found west of Engle hart just no rth of the . The showing is a Boundary /fWHUSfVE CONTACT 1.2 m wide, highly fractured quartz rich zone which y contains some minor molybdenite. The quartz is highly METAVOLCANICS AND METASEDIMENTS sheared, carbonated mafic metavoicanics and part METASEDIMENTS of the ultramafic belt which is found a ong tne Engle Chemical Vletasediments0 hart River The showing has been exposed in a north- northwest-1©end ing Tench and the quartz veinmg 4a Chert trends lo the northeast Diamond drilling was carried out in ©938 (Moo-house METAVOLCANiCS 1941) and the results were generally poor The highest Ultramafic Metavolcanics" assay obtained was 0,46 ounces gold per ton. The tied party grab-sampled a carbonatized, fuch 3 Unsubdividnd site-bearing schist found along the Englehart Rive© 3a Massive peridotite north of Charlton The sample when assayed by tne 3b Massive pyroxenite Geoscience Laboratory, Ontario Geological Survey, 3c Spinifex texture Toronlo contained O 09 ounces gold per ton 3d Talc-carbonate schist 3e Chlorite schist 3f Tremolite GUIDE TO PROSPECTORS 3g Carbonatized A though the lack of oedrocK exposure Takes pro specting difficult there is potential for gold mine©aliza Intermediate Metavolcanicsc tion within the map-area. The carbonatized shear zones found around the Hillcrest prospect should be 2 Unsubdivided re-examined for their gold potential The carbonatized, 2a Massive lava fuchsite-beanng shear zones found along the Engle 2b Porphyritic lava (feldspar phenocrysts) hart River north of Charlton should be carefully pro POSSIBLE MIDDLE PRECAMBRIAN SEDIMENTS 2c Tuff spected If the Suncay Creek Valley is an expression 2d Lapilli-tuff of the extension of the "Palmer-Vaughan-Estival 2e Lapillistone Break© then the valley should be carefully examined 2f Tuff breccia tor the presence of hitherto unknown outcrop and pos 2g Pyroclastic breccia sible mineralization 2h Carbonatized 2j Amphibolitized, hybridized 2k Intermediate dikes

Mafic Metavolcanics0 REFERENCES 1 Unsubdivided i a Massive, fine-grained laya 1 b Massive, medium-grained lava Borrows. A.G and Hopkins, P.E. 1c Pillowed lava 19?? 1 Blancne River Area, Timiskaming Dist©ict Ontario; On 1d Amygdaloidal lava tario Department of Mines Vo! 31 pt 3 22p. Accompa med by Mao 31 b, Scale l 63 360 or" inch to 1 mile. 1e Variohtic lava 1g High iron mafic lava Jensen,..S 1h Spinifex texture 1978 Heyi(J r ©al Stratiyaphy and Structure o1, the tmrnins- Kirkland Lake Area, and the Kirkland Lake-Larrler Lake 1j Hyaloclastite Area; p 67-72 ©n Summary of Field Work 1978. by the 1k Pillow breccia Ontario Geological Survey, edited by VG Milne O L 1m Flow breccia White, R.B. Ba r luw and J.A. Robertson. Ontario Geologi 1 n Porphyritic flow (amphibole phenocrysts) cal Survey, Miscellaneous Paper82, 235p. 1o Amphibolite 1979- Larder Lake Synopt z Mapping Project. Districts of Co 1 p Metamorphic layering chrane and Tim starring: p 64-59 in Summary of Field 1q Carbonatized Work. 1978, by the Ontario Geological Survey, edited by 1 r Xenoliths of intermediate flow material V.G Milne O.L While. R B Barlow and C R. Kustra. On 1 s Epidotized mafic flows tario Geological Survey Miscellaneous Paper 90. ?4Sp L ovell. H ^ NOTES 1977 Geology of the Englehart-^arlton Area, District of Timis kaming. Ontario Geological Survey, Miscellaneous Pa a This legend is basically a field legend and rray be changed as a result of sub per 69 ©5p Accompanied Dy Vlap P. 1249. Scale sequent laboratory investigations 1:31 680 or 1 inch to Vs mile. b Not all lithologic types are found on this map sheet. Lovell, H ^. and Caine T W. c Stratigraphic position is not implied by lithologic position in the legend. 1970 Lake Timiskaming Rift Valley; Ontario Department of Mines, Miscellaneous Paper 39, 1Gp. The otter© G" preceding a rock unit number indicates flat interpretation is based Moorhouse W W. on geophysical data 1941: Geology of the Bryce-Robil ard Area. Timiskaming Dis trict Ontario; Ontano Deaprtment of Mines, Vol. 50, p: 4, 1941, 50 p Accompanied by Map GO scale 1 31 G8C or 1 inch to ©/z mile Ploeger, ~ , Waldren, D and Grabowski, G 1 979". Dack Township, Distrcl of Tims Kami ng; Ontario Geo logical Survey, Pre.irrinary Map P 20/-0. Kirk.snd Lake Data Sfines Scalfi M5840 or l inch to Vi mile Data METAL AND MINERAL compiled 1979. ABBREVIATIONS Thomson Robert 1966: Geology of Henwood Township. District of Timiskam ing. Ontario Department ct Mines Miscellaneous Paper Au...... Gold 5 48p Col icut L. qcv quartz-carbonate vein qv ...... ,..,. quartz vein

LIST OF PROPERTIES Bo/fey o

1. Charlton Group 2. J. Morns SOURCES OF INFORMATION 3. A, Mowat (Hillcrest prospect) Base-map derived from the Forest Resources Inventory maps, Lands A Parker and Waters Group, Ontario M.inistry of Natural Resources. 5. Weeks-Simpkin prospect Source Mineral Deposit Records. Assessment Files Research Office, Ontario Geological Survey, Toronto Resident Geologists Files, Ontario Ministry of Natural Resources Kirk land Lake. Bryce-Robillard Area. District of Timiskaming, Ontario Department of SYMBOLS Mines Map 50j by W.W. Moorhouse. 1941. Scale 1 inch to Vz mile, Geological Survey of Canada magnetic Maps 1493G New Liskeard and M9-1G Englehart. Glacial striae Geology not tied to surveyed lines. Magnetic declinat-on 1 1 0W in 1980 Small bedrock outcrop Area of bedrock outcrop Echo L. Bedding, top unknown; (inclined, ver tical)

Bedding, too indicated oy arrow; (in clined, vertical, overturned) CREDITS

Lava ftow; top in direction of arrow Geology by G.W. Johns, Warren Hoyle, David Good, and assistants, 1980. Foliation: (horizontal, inclined, verti cal) Every possible effort has been made to ensure the accuracy of Ihe infor mation presented on this map; however, the Ontario Ministry of Natural Schistosity: (horizontal inclined verti Resources does nol assume any liability for errors that may occur. Users cal) may wish to verify critical information; sources include both the refer POSSIBLE MIDDL ences listed here, and information on file at the Resident or Regional Ge Geolog.cal boundary observe^ ologist©s office and the Recorder©s office nearest the rnap area. Geological boundary, position inter preted This project is oart of the Geological Survey program and is funded by the Ontano Ministry of Northern Affairs. Geological boundary, deduced from geophysics Issued 1981 Fault; assumed

^ineament Information from this publication.may be quoted if credit is given. It is recommended that reference be made in the following form; Jointing, (horizontal, inclmeo verti Johns, G.W., Hoyle, Warren, and Good, David. cal) 1981: Precambrian Geology of the Hill Lake Area, Beauchamp and Dack Townships, Timiskaming District; Ontario Geological Survey Pre Drag folds with plunge liminary Map P.2416, Geological Series, Scale 1:15840 or 1 inch to y* mile Geology in 1980. Test piis

Exploration trenching