Significance of Folds and Mylonites at the Grenville Front in Ontario

Timothy E. La Tour

doi:10.1130/GSAB-P2-92-997

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Research Article| July 01, 1981

Significance of Folds and Mylonites at the Grenville Front in Ontario

Timothy E. La Tour

1

Geology Department, University of Western Ontarjo, London, Ontario, Canada N6A 5B7

Geology Department, Georgia State University, Atlanta, Georgia 30303

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Author and Article Information

Timothy E. La Tour

1

Geology Department, University of Western Ontarjo, London, Ontario, Canada N6A 5B7

Geology Department, Georgia State University, Atlanta, Georgia 30303

Publisher: Geological Society of America

Received: 15 Feb 1980

Accepted: 06 Apr 1981

Revision Received: 10 Apr 1981

First Online: 02 Mar 2017

Online ISSN: 1943-2674

Print ISSN: 0016-7606

GSA Bulletin (1981) 92 (7_Part_II): 997–1038.

https://doi.org/10.1130/GSAB-P2-92-997

Abstract

The Grenville front is defined as the northwestern limit of the Grenville structural province of the Canadian shield (Stockwell, 1964; Wynne-Edwards, 1972). It strikes northeast-southwest and is approximately 1,600 km long, extending from Lake Huron to the Labrador Sea. The front separates the Grenville structural province from either the Nain, Churchill, Superior, or Southern structural province and is commonly associated with mylonitic fabrics (see Higgins, 1971 for terms usage) which strike approximately parallel to the front and dip steeply to the southeast.

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