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 |
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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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