Structural evolution of the Hudsonian Torngat Orogen in the North River map area, Labrador: evidence for east-west transpressive collision of Nain and Rae continental blocks

M. J. Van Kranendonk, I. Ermanovics

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18 Citations (Scopus)

Abstract

The Hudsonian Torngat Orogen in the North River map area, Labrador, evolved through 1) early thrusting and associated isoclinal folding in lower Proterozoic supracrustal cover rocks, and the development of a regional tectonic fabric at peak metamorphic grade; 2) folding and intense shearing on subvertical planes, characterized by a subhorizontal NNW-plunging extension lineation during sinistral transpression; and 3) E-directed thrusting during uplift of the orogen. These structures are interpreted as progressive features that resulted from E-W oblique collision of the Archean Nain and Rae continental blocks across a 160°-striking boundary. -Authors

Original languageEnglish
Pages (from-to)283-288
Number of pages6
JournalGeoscience Canada
Volume17
Issue number4
Publication statusPublished - Jan 1 1990
Externally publishedYes

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ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

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