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Petrology of the Shawinigan Falls District

1936; Geological Society of America; Volume: 47; Issue: 2 Linguagem: Inglês

10.1130/gsab-47-197

1943-2674

Freleigh Fitz Osborne,

Geological formations and processes

Research Article| February 29, 1936 Petrology of the Shawinigan Falls District F. FITZ OSBORNE F. FITZ OSBORNE Search for other works by this author on: GSW Google Scholar Author and Article Information F. FITZ OSBORNE Publisher: Geological Society of America Received: 19 May 1935 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 © 1936 Geological Society of America GSA Bulletin (1936) 47 (2): 197–228. https://doi.org/10.1130/GSAB-47-197 Article history Received: 19 May 1935 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation F. FITZ OSBORNE; Petrology of the Shawinigan Falls District. GSA Bulletin 1936;; 47 (2): 197–228. doi: https://doi.org/10.1130/GSAB-47-197 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract INTRODUCTIONShawinigan Falls, 20 miles north of the St. Lawrence River and approximately midway between Montreal and Quebec, is 4½ miles1 north of the boundary between the pre-Cambrian shield and the St. Lawrence lowlands. The falls, from which the town gets its name and which are the source of the waterpower developed there, are in the St. Maurice River, which empties in the St. Lawrence River at Trois Rivières. North of Shawinigan Falls, crystalline rocks of the pre-Cambrian shield crop out; whereas, to the south, the St. Lawrence lowland is underlain by nearly horizontal Paleozoic rocks, covered by extensive sand-plain that here borders the St. Lawrence River.In 1933, during the course of field work on commercial granites, for the Quebec Bureau of Mines,2 the writer mapped an area about Shawinigan Falls. At that time it was realized that the exposures about the town afford data on the . . . This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.