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RP 564(A) PRELIMINARY REPORT, GEOLOGY OF HARRICANA - TURGEON AREA, ABITIBI-EAST AND ABITIBI-WEST COUNTIES P.R. 564 GOUVERNEMENT DU QUEBEC w~w DEPARTMENT OF NATURAL RESOURCES Honorable PAUL-E. ALLARD,Minister MINES BRANCH GEOLOGICAL EXPLORATION SERVICE GEOLOGY OF HARRICANA-TURGEON AREA ABITIBI-EAST AND ABITIBI-WEST COUNTIES PRELIMINARY REPORT by Jerome H. Remick 80° 78° 76° 71° 72° •••••• 1 52°_._~ G/? > G} R. Ln:rm,rn -- -- 5? ° BAIE we JAMES de . ) B.liede RP' Raperr House Hunnab I , R. de Rupert -~ I ~, _ _ _ ~.~~ `/ Lae l6swavni ,y ~ ^J / / !r I - ., n \ ~ • ` r . rl 3 .r r i - L. brvn, i ' , AlbaneL : r I ~ ✓` /)~L. ^ ~' a° / R. Bmed~urk . 1 f !/B" i I r r 1. \ \ i ~ il °p>a ~` ~ -. I I l ' ~~a~ ~ • ' ;Ism' ( l 1I a~ Q i U É B! ~E , ; C Y _ . f L. R'amnirh< 50° ~~, _ c 1 ~ L. r •~ -'_~.--1 su° .w! L IIa pnm : — ~ uebaseu ? 7 ~ L. nr. G+fv:vl ÿI Chiba gamsa• ?a ~ ~'!4.T 4 L. ~nnip ~ ~+~' %~ z ~ ; I i ~~ ' ~ ~ .— 'L_ l'irvb~ /r L. Faber ~ ~ p "L. ~~wan~ ,i I ~ ( ..v., ,,,.4.),paRwau Meruuic i y~ BeeRyville -t'-VI ~1' I• b , ~ L. du .Mule 7 Rmoa Si L. Abitibi : A 7 r~ _~ r~ L. N...)41 .. , . Jeu z1 ~ parq~e _ Bunutr' ~ . -FREe~ml i s, sem el i~. F L..Malarric RESER~•OÎR ~~ ` GOWN i ~ = VJd'Or / L. G Egaen ô ss so ' 48° --~ ~~er `, 80° 78° 76° 74° 72° QUÉBEC 1969 P.R. 564 f GOUVERNEMENT DU QUEBEC DEPARTMENT OF NATURAL RESOURCES Honorable PAUL-E. ALLARD,Minister MINES BRANCH GEOLOGICAL EXPLORATION SERVICE GEOLOGY OF HARRICANA•TURGEON AREA ABITIBI-EAST AND ABITIBI-WEST COUNTIES PRELIMINARY REPORT by Jerome H. Remick QUÉBEC 1969 Preliminary Geological Report on HARRICANA-TURGEON AREA Abitibi-East and Abitibi-West Counties by Jerome H. Remick INTRODUCTION The discovery of small showings of gold on Grondin creek in Beschefer township shortly after World War II brought the first large wave of prospectors into the map-area. Some trenching and geological mapping were carried out in a number of townships in the northwestern part of the map-area. The discovery in 1957 of several sulfide bodies containing encouraging tonnages of copper and zinc with minor amounts of silver and gold (now being mined) southwest of Matagami lake prompted exploration of the adjoining Harricana- Turgeon area as a possible westward extension of this mineral- ization. Several low-grade gold showings, a number of copper showings, and deposits of low-grade iron ore, as well as zones of barren pyrrhotite and pyrite, have been found in outcrops and by drilling within the Harricana-Turgeon map-area. Several copper-zinc deposits, now being developed into mines have been found a few miles south of the map-area in the southern part of Joutel township. The Harricana-Turgeon area, the center of which lies 86 miles north-northwest of Amos, was geologically mapped during the summer of 1959 by the Geological Exploration Service of the Quebec Department of Natural Resources. Trav- ersing was shared by six two-man teams which were transported to and from fly camp and supplied by a Bell G-2 helicopter (Plate 1A). Many landing areas for a helicopter are provided throughout the entire map-area by patches of muskeg, by numerous lakes and ponds, and by river banks (Plate 1B). - 2 - Sections of This Report Besides the geological report itself and the six geological maps, the following appendices are included: Appendix I: Summary of each drill log in the files of the Quebec Department of Natural Resources from the map-area. The location of each drill-hole is shown on the geological maps at a scale of 1 mile to the inch and each hole is numbered. Appendix 2: A list of geophysical surveys on the files of the Quebec Department of Natural Resources for the map- area. The location of each survey is shown on one of the township index maps included after appendix 3. Appendix 3: A list of geological and geochemical maps in the files of the Quebec Department of Natural Resources for the map-area. The location of each survey is shown on the township index maps included after this Appendix. A list of data received between Sept. 1, 1966, and Jan. 15, 1968, is included as addenda in this report. Location of Area The map-area, including the western half of the area mapped by Longley (1943) (not re-mapped by our party but reproduced on the accompanying maps), is bounded to the south and to the north respectively by latitudes 49°30' and 50000' and to the east and west by longitudes 78°00' to 79°31' (the Interprovincial boundary). It comprises an area of approx- imately 2,320 square miles in Abitibi-East and Abitibi-West counties. It includes all or major parts of the following 28 townships: Aloigny, Bapst, Beschefer, Brouillan, Carheil, Casa- Berardi, Desmazures, Dieppe, Douay, Enjalran, Estrées, Estrades, Fénelon, Gaudet, Grasset, Joutel, La Gauchetière, Lanoullier, La Peltrie, Massicotte, Montgolfier, Orvilliers, Puiseaux, Raymond, Récher, Sainte-Hélène, Subercase and Valrennes. Access to Area Air Transportation Aviation companies located near Senneterre, Val-d'Or, Amos, Rouyn, Macamic, La Sarre, and Watson lake in Quebec and Moosonee in Ontario provide transportation into the area. Suitable landing places for aircraft are provided by Harricana river, the many lakes in the area and a few places on Turgeon and Wawagosic rivers. Both these last-mentioned rivers, while they are wide enough to accommodate air craft, contain many boulders and, during a dry season in the summer, contain very little water. Most of the lakes do not have 3 large angular boulders, as much of the area is covered by a thick layer of clay. Boulders occur in some of the lakes just north of the map-area where the veneer of glacial sedi- ments is much thinner. Roads The area is accessible from Amos by the new all-weather road (Plate 1B) leading to the town of Matagami. The road passes through Douay township in the southeast corner of the map-area. A branch goes westward to harricana river and the town of Joutel, a few miles south of the map-area. Water Transport Harricana river provides an excellent water route for motor canoe. There are no falls or dangerous rapids from latitudes 47005' to the north part of Montgolfier town- ship. Several falls and rapids from the north part of Mont- golfier township to the north part of the map-area necessitate short portages. The southwest part'of the map-area may be reached by road from La Sarre to a point on Turgeon river near Val Paradis, in Paradis township, and then by canoe along Turgeon river. There are about five well-cut portages and some areas of boulder rapids along Turgeon river before reach- ing the west side of Corset island in the southwest corner of the map-area. Turgeon and Wawagosic rivers provide excellent water routes and contain only a few small rapids or falls necessitating short portages. The water level may become low during a summer's dry spell and thus expose many areas of boulders. Théo, Samson, Adam, Angle, Puiseaux (formerly Tannin creek), Détour, and Brouillan rivers and Grondin (for- merly Twining) creek are traversable in a prospector canoe. Log jams, boulder rapids, and small falls occur in places in these rivers. The water level is usually higher in these smaller rivers than in parts of Wawagosic and Turgeon rivers. Field Work Mapping Methods Traverses were made at one-half-mile intervals across most places where areas of rock outcrop were believed to be present. Most of the map-area was traversed by helicopter and most isolated ourcrops were examined from the ground. Unfortunately, time did not permit examination of two small areas of rock outcrop in the northwest corner of the Quésagami sheet and these areas are indicated on the geological map supplementing this report. Rock Exposure Most of the area is covered by muskeg and has no outcrop. Nearly all of the outcrop, except for a little which occurs in the northwest part of the area, occurs on small to large hills usually covered in part by birch and pop- lar, along the shore of many of the rivers (Plate 2A, 2B) and streams, and along a few of the larger lakes. Geological Contacts The limited number and uneven distribution of rock outcrops in the map-area make it difficult to separate accurately most zones of metamorphosed volcanic and sedimentary rock on the accompanying geological maps. In most instances, these rock types are separated on the map by number rather than geological contact. Meaningful geological contacts between other rock types are in many cases difficult to draw because of the scarcity of outcrop. However, airborne magnetic maps were of some aid in outlining geological contacts between rock types of contrasting magnetic intensity. Ridges of Magnetic Anomalies The ridges of the more prominent magnetic anomalies taken from airborne magnetic maps furnished by the Federal government and various mining companies are shown on the geological maps accompanying this report. The ridges represent the location of the highest magnetic intensity of an anomaly. GENERAL DESCRIPTION OF AREA Topography The map-area lies within the clay belt and is part of a plain sloping gently northward toward James bay. It has an average elevation of about 1,000 feet. The terrain is very flat (Plate 3A) and much of it is covered by muskeg with small areas of spruce. A few hilly areas of rock, a wide, elevated, northwesterly trending zone of sand, and smaller hills of glacial sedime:it rise above the general level.

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