Archean and Paleoproterozoic cratonic rocks of Baffin Island

St-Onge, M R and Scott, D J and Rayner, N and Sanborn-Barrie, M and Skipton, D R and Saumur, B M and Wodicka, N and Weller, O. M. (2020) Archean and Paleoproterozoic cratonic rocks of Baffin Island. Geological Survey of Canada, Bulletin, 608. pp. 1-29. DOI https://doi.org/10.4095/321824

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Abstract

Archean and Paleoproterozoic cratonic rocks of Baffin Island define four stacked structural levels that are juxtaposed within the middle Paleoproterozoic Trans-Hudson Orogen. From north to south, and highest to lowest structural level, these comprise:1) the Archean Rae Craton, unconformably overlain along its southern margin by middle Paleoproterozoic supracrustal cover (Piling Group) and stratigraphically similar units of the Hoare Bay Group on Cumberland Peninsula; 2) Archean to middle Paleoproterozoic metaplutonic units and middle Paleoproterozoic metasedimentary cover (Lake Harbour Group), collectively termed the 'Meta Incognita microcontinent'; 3) middle Paleoproterozoic orthogneiss, interpreted as a deformed arc-magmatic terrane (Narsajuaq terrane) or alternatively as Narsajuaq-age intrusions emplaced in the Meta Incognita microcontinent; and 4) Archean orthogneiss, interpreted as the northern continuation of the lower-plate Superior Craton, and associated middle Paleoproterozoic continental-margin supracrustal cover (Povungnituk Group).

Item Type: Article
Uncontrolled Keywords: NILAREP; IA76
Subjects: 05 - Petrology - Igneous, Metamorphic and Volcanic Studies
Divisions: 05 - Petrology - Igneous, Metamorphic and Volcanic Studies
07 - Gold Open Access
Journal or Publication Title: Geological Survey of Canada, Bulletin
Volume: 608
Page Range: pp. 1-29
Identification Number: https://doi.org/10.4095/321824
Depositing User: Sarah Humbert
Date Deposited: 27 May 2020 00:24
Last Modified: 27 May 2020 00:24
URI: http://eprints.esc.cam.ac.uk/id/eprint/4750

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