5 GEOLOGICAL SURVEY PAPER 30 1C COMMISSION GEOLOGIQUE ETUDE 80-1C CURRENT RESEARCH PARTC Including Rubidium-Strontium and Uranium-Lead Isotopic Age Studies, Report 3 1980 ©Minister of Supply and Services Canada 1980 Available in Canada through authorized bookstore agents and other bookstores or by mail from Canadian Government Publishing Centre Supply and Services Canada Hull, Quebec, Canada K1A 0S9 and from Geological Survey of Canada 601 Booth Street Ottawa, Canada K1A 0E8 A deposit copy of this publication is also available for reference in public libraries across Canada Cat. No. MW-80-ICE Canada: $6.00 ISBN 0-660-10721-X Other countries: $7.20 Price subject to change without notice Geological Survey of Canada - Commission geologique du Canada D.J. McLAREN Director General Directeur general J.G. FYLE5 Chief Geologist Geologue en chef E. HALL Scientific Executive Officer Agent executif scientifique M.J. KEEN Director, Atlantic Geoscience Centre, Dartmouth, Nova Scotia Directeur du Centre geoscientifique de I'Atlantique. Dartmouth (Nouvelle-Ecosse) J.A. MAXWELL Director, Central Laboratories and Technical Services Division Directeur de la Division des laboratoires centraux et des services techniques R.G. BLACKADAR Director, Geological Information Division Directeur de la Division de I'information geologique W.W. NASSICHUK Director, Institute of Sedimentary and Petroleum Geology, Calgary, Alberta Directeur de I'Institut de geologie se"dimentaire et petroliere. Calgary (Alberta) J.E. REESOR Director, Precambrian Geology Division Directeur de la Division de la geologie du Precambrten A.G. DARNLEY Director, Resource Geophysics and Geochemistry Division Directeur de la Division de la ge~ophysique et de lo. ge~ochimie applique'es J.S. SCOTT Director, Terrain Sciences Division Directeur de la Division de la science des terrains G.B. LEECH Director, Economic Geology Division Directeur de la Division de la g&ologie economique R.B. CAMPBELL Director, Cordilleran Geology Division, Vancouver, British Columbia Directeur de la Division de la ge"ologie de la Cordillere. Vancouver (Colombie-Britannique) Separates A limited number of separates of the papers that appear in this volume are available by direct request to the individual authors. The addresses of the Geological Survey of Canada offices follow: 601Booth Street, OTTAWA, Ontario K1A CO Institute of Sedimentary and Petroleum Geology, 3303-33rd Street N.W., CALGARY, Alberta T2L 2A7 Cordilleran Geology Division 100 West Render Street, VANCOUVER. B.C. V6B 1R8 Atlantic Gsoscience Centre, Bedford Institute of Oceanography, P.O. Box 1006, DARTMOUTH, N.S. B2Y 4A2 When no location accompanies an author's name in the title of a paper, the Ottawa address should be used. Tire's a part On peut obtenir un nombre limits de "tir4s a part" des articles qui paraissent dans cette publication en s'adressant directement a chaoue auieur. Les adresses des diff4rents bureaux de la Commission ggologique du Canada sont !es suivantes: 601. rue Booth OTTAWA. Ontario K1A0E8 Institut de g4o\ogie se"dimentaire et pe"troliere 3303-33rd. St. N.W.. CALGARY. Aiberta T212A7 Division de la giologie de la Cordillere 100 West Pender Street VANCOUVER. Colombie-Britamique V6B 1R8 Centre ge"oscientifique de VAtlantique Institut oc4anographique de Bedford B.P. 1006 DARTMOUTH. Nouvelle-Ecosse B2Y 4A2 Lorsque Vadresse de Vauteur ne figure pas sous le titre dim document, on doit alors utiliser 1'adresse d'Ottawa. SCIENTFIC AND TECHNICAL REPORTS RAPPORTS SCIENTIFIQUES ET TECHNIQUES Page A.K. SINHA: Overburden characteristics in the Alfred-Hawkesbury area, Ontario, obtained by d.c. electrical soundings 1 T.E. BOLTON: Colonial coral assemblages and associated fossils from the Late Ordovician Honorat Group and White Head Formation, Gaspe Peninsula, Quebec 13 G.H. EISBACHER: Debris torrents across the Alaska Highway near Muncho Lake, northern British Columbia 29 H.W. TIPPER and B.E.B. CAMERON: Stratigraphy and paleontology of the Upper Yakoun Formation (Jurassic) in Alliford Bay Syncline, Queen Charlotte Islands, British Columbia 37 B.W. CHARBONNEAU: The Fort Smith radioactive belt, Northwest Territories *5 F.W. CHANDLER and E.3. 5CHWARZ: Tectonics of the Richmond Gulf area, northern Quebec — a hypothesis 59 K. ATTOH: Structure, stratigraphy and some chemical characteristics of an Early Proterozoic (Birimian) volcanic belt, northeastern Ghana 69 T.T. UYENO and G. KLAPPERt Summary of conodont biostratigraphy of the Blue Fiord and Bird Fiord formations (Lower-Middle Devonian) at the type and adjacent arsas, southwestern Ellesmere Island, Canadian Arctic Archipelago 81 L. BEAUVAIS et T.P. POULTON: Quelques coraux du trias et du jurassique du Canada 95 A.D. McCRACKEN, G.S. NOWLAN, and C.R. BARNES: Gamachignathus, a new multielement conodont genus from the latest Ordovician, Anticosti Island, Quebec 103 W.H. FRITZ: Two Cambrian stratigraphic sections near Gataga River, northern Rocky Mountains, British Columbia 113 S.H. RICHARD: Surficial geology: Papineauville-Wakefield region, Quebec 121 M.B. RAFEK: Triassic conodonts from the Pavilion beds, Big Bar Creek, central British Columbia 129 D.F. STOTT and D.W. GIBSON: Minnes Coal, northeastern British Columbia 135 SCIENTIFIC AND TECHNICAL NOTES NOTES SCIENTIFIQUES ET TECHNIQUES E.J. SCHWARZ and G.N. FREDA: Preliminary paleomagnetic results for Sakami Formation redbeds near La Grande tt, Quebec • 139 A.C. ROBERTS, G.Y. CHAO, and F. CESBRON: Lanthanite-(Nd), a new mineral from Curitiba, Parana, Brazil 1*1 P. EGGINTON: A portable wind generator for field use 1*3 J.R. HARPER and R. KASHINO: A dependable shallow-water bottom-mounted current meter system 1*6 W. BLAKE, Jr.: Radiocarbon dating of driftwood; inter-laboratory checks on samples from Nordaustlandet, Svalbard 1*9 K. BELL and J. BLENKINSOP: Whole rock Rb-Sr studies in the Grenville Province of southeastern Ontario and western Quebec - a summary report 152 A.S. DYKE: Base metal and uranium concentrations in till, northern Boothia Peninsula, District of Franklin 155 R.V. KIRKHAM and J.M. FRANKLIN: Native copper on Superior Shoal, Ontario 160 RUBIDIUM-STRONTIUM AND URANIUM-LEAD ISOTOPIC AGE STUDIES ETUDES DES DATATIONS ISOTOPIQUES PAR LES METHODES RUBIDIUM-STRONTIUM ET URANIUM-PLOMB Page W.D. LOVERIDGE: Introduction 163 R.W. SULLIVAN and W.D. LOVERIDGE: Uranium-lead age determination on zircon at the Geological Survey of Canada - current procedures in concentrate preparation and analysis 164 W.H. POOLE: Rb-Sr age of Shunacadie pluton, central Cape Breton Island, Nova Scotia 165 W.H. POOLE: Rb-Sr age of some granitic rocks between Ludgate Lake and Negro Harbour, southwestern New Brunswick 170 W.H. POOLE: Rb-Sr ages of the "Sugar" granite and Lost Lake granite, Miramichi anticlinorium, Hayesville map area, New Brunswick , 17ft W.H. POOLE: Rb-Sr ages of granitic rocks in ophiolite, Thetford Mines-Black Lake area, Quebec 181 W.H. POOLE: Rb-Sr age study of the Moulton Hill granite, Sherbrooke area, Quebec 185 3. GUHA and R. THORPE: A Rb-Sr study of dykes associated with the Chibougamau pluton, Quebec 191 3.H. BOURNE: Age determinations across the Cayamant Lineament, Crenville Province, Quebec 195 A.3. BAER: Foliated and recrystallized granites from the Timberlake Pluton, Ontario 201 I.F. ERMANOVICS and W.D. LOVERIDGE: Rb-Sr studies of the Horseshoe Lake and Apisko Lake granites, Berens River-Deer Lake map area, Manitoba and Ontario 207 I.F. ERMANOVICS: Rb-Sr age of the Rice River gneiss, Hecla-Carroll map area, Manitoba and Ontario 213 T. FRISCH: Tonalite gneisses, western Melville Peninsula, District of Franklin 217 M. SCHAU: Isochron age of a re-metamorphosed meta-ultrabasic inclusion of Prince Albert Group in Walker Lake Gneiss Complex, Central Keewatin 221 E.M. CAMERON: Rb-Sr age of the Lineament Lake granodiorite, District of Mackenzie 223 3.C. McGLYNN: Peninsular sill, Takijuq Lake, District of Mackenzie 227 R.A. FRITH: Rb-Sr studies of the Wilson Island Group, Great Slave Lake, District of Mackenzie 229 R.A. FRITH: Rb-Sr age of the Cotterill Lake granites, Indin Lake area, District of Mackenzie 23ft M. SCHAU: Zircon ages from a granulite-anorthosite complex and a layered gneiss complex northeast of Baker Lake, District of Keewatin 237 M.B. LAMBERT and XB. HENDERSON: A uranium-lead age of zircons from volcanics and sediments of the Back River volcanic complex, eastern Slave Province, District of Mackenzie 239 D. SHAW: A concordant uranium-lead age for zircons in the Adamant Pluton, British Columbia 2ft3 Note to contributors 2ft7 Author index 248 SCIENTIFIC AND TECHNICAL REPORTS RAPPORTS SCIENTIFIQUES ET TECHNIQUES OVERBURDEN CHARACTERISTICS IN THE ALFRED-HAWKESBURY AREA, ONTARIO, OBTAINED BY D.C. ELECTRICAL SOUNDINGS Project 73000* Ajit K. Sinha Resource Geophysics and Geochemistry Division Sinha. Ajit K., Overburden characteristics in the Alfred-Hawkesbury area, Ontario, obtained by d.c. electrical soundings; m Current Research. Part C. Geological Survey of Canada. Paper 80-1C. p. 1-12, 1980. Abstract A direct current Schlumberger resistivity survey was carried out in an area around Alfred. Ontario. A total of 62 electrical soundings were made in the area with maximum current electrode separation of 1200 m. The station spacings were variable but averaged about l.S km from each other. The geology of the area is not complex, the surface layers being composed of a number of quasi-parallel beds of varying resistivity and thickness. Because of the presence of an extremely conductive clay layer (Champlain clay beds) in much of the area,