Geology of the Winokapau Lake area, Grenville Province, Central Labrador
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Geology of the Winokapau Lake area, Grenville Province, Central Labrador by A. Thomas

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Published by Geological Survey of Canada in Ottawa, Ont .
Written in English

Subjects:

  • Geology -- Newfoundland and Labrador -- Winokapau Lake Region.

Book details:

Edition Notes

StatementA. Thomas.
SeriesPaper (Geological Survey of Canada) -- 89-18
ContributionsCanada. Newfoundland Cooperative Mineral Program., Canada. Newfoundland Mineral Development Agreement., Geological Survey of Canada.
The Physical Object
Paginationv, 86 p. :
Number of Pages86
ID Numbers
Open LibraryOL20293695M
ISBN 100660149249

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The Central or Knob Lake Range section extends for km south from the Koksoak River to the Grenville Front located 30km north of Wabush Lake. The principal iron formation unit, the Sokoman Formation, part of the Knob Lake Group, forms a continuous stratigraphic unit that thickens and thins from sub-basin to sub-basin throughout the fold belt. The Grenville Province: Up Close The making of the Grenville Province is the third stage in the formation of Ontario. Built from about billion to about billion years ago, it is the youngest part of the Canadian Shield. The rocks of the Grenville Province were baked, squeezed, stretched and . Duguet, M. and Gordon, S. Precambrian geology of the Hungry Lake area, Grenville Province; Ontario Geological Survey, Map P, scale Use and Reproduction of Content: The EIP and the Content may be used and reproduced only in accordance with applicable intellectual property laws.   U-Pb isotope analysis of zircon, titanite, monazite and rutile extracted from 15 different Grenville Province rocks in eastern Labrador reveals: 1) major crust formation through magmatism between 1, and 1, Ma ago; no evidence of older crustal material was found. 2) Pegmatite and gabbro intrusions between 1, and 1, Ma ago, probably related to incomplete rifting of the Cited by:

Labrador, northeastern portion of the Canadian mainland. Together with the island of Newfoundland, it constitutes the province of Newfoundland and Labrador. Labrador has an area of approximately , square miles (, square km). It is bounded by the Hudson Strait (north), the Labrador Sea. A geologic or geomorphic province is a spatial entity with common geologic or geomorphic attributes. A province may include a single dominant structural element such as a basin or a fold belt, or a number of contiguous related ing provinces may be similar in structure but be considered separate due to differing histories. Other articles where Grenville Orogen is discussed: North America: billion to million years ago: northwest-directed crustal-scale thrusting in the Grenville orogenic belt. The belt is exposed principally along the southeastern margin of the Canadian Shield, but inliers occur in the Appalachians, the East Greenland Caledonides, Texas, and Mexico. The Grenville belt of margin sediments was caught in between the colliding continents and was thrust up onto the side of proto-North America. The collision crumpled the crust, creating a tall mountain range that stretched from Canada to Mexico: the Grenville Mountains. These mountains are the earliest evidence of mountain building in our region.

Azar, B. and Easton, R.M. Precambrian geology of the Chenaux gabbro, Grenville Province; Ontario. Geological Survey, Preliminary Map P, scale Use and Reproduction of Content: The Content may be used and reproduced only in accordance with applicable intellectual property laws.   The Wanapitei Complex (6 km× km), lying km southeast of the Grenville Front, consists of a northwestern zone of gabbro and folded injection breccia and a southeastern layer of intensely folded hornblendeplagioclase gneiss. Disseminated Ni-Cu sulphides are unevenly distributed in a zone between the injection breccia and the folded by: 3. A Brief Geologic History of the Hudson Valley Middle Proterozoic Eon (1, – Ma) Proto-North America, called Laurentia, was much smaller than the present-day continent and located deep in the Southern Hemisphere. The continental crust which today underlies New York State did not exist prior to this time. The area was aFile Size: KB. The Red Lake greenstone belt in western Ontario is one of Canada's foremost Au mining districts, with Au showings/deposits within a small area of about km 2 (Fig. 1; Sanborn-Barrie et al.