Geology, Circle Lake, Baffin Island, Nunavut / [by] M. Sanborn-Barrie and M. Young.: M183-1/5-2011E-PDF

"Cumberland Peninsula, eastern Baffin Island, is an under-explored, frontier region with significant diamond, base- and precious-metal potential. Archean (2.97-2.77 Ga) foliated to gneissic tonalitic plutonic rocks with enclaves of >2.77 Ga semipelite, ca. 2.88 Ga gabbro and rare ca. 2.92 Ga metavolcanic rocks form a structural basement, exposed in the south and north. Metasedimentary cover rocks of the Paleoproterozoic Hoare Bay group, exposed from the central to the northeast part of the peninsula, are in tectonic contact with the basement gneisses. The cover sequence includes widespread semipelite-psammite with minor quartzite, marble, silicate- and oxide-faciesiron-formation, chert and graphitic-pyritiferous shale, and two geochemically-distinct strands of ultramafic-mafic metavolcanic rocks of pyroclastic origin. Basement and cover rocks are cut by 1.9-1.88 Ga charnockite, biotite-garnet granodiorite and lesser quartz diorite of the Qikiqtarjuaq plutonic suite. Major structures and medium to high-grade metamorphic assemblages are attributed to polyphase tectonometamorphism between ca. 1.90-1.84 Ga"--Abstract.

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Publication information
Department/Agency Canada. Natural Resources Canada, issuing body.
Geological Survey of Canada, issuing body.
Title Geology, Circle Lake, Baffin Island, Nunavut / [by] M. Sanborn-Barrie and M. Young.
Series title Canadian geoscience map ; No. 5
Publication type Series - View Master Record
Language [English]
Format Electronic
Electronic document
Note(s) Includes a legend.
Includes bibliographical references.
Includes abstract in French.
Publishing information Ottawa : Natural Resources Canada, c2013.
Author / Contributor Sanborn-Barrie, Mary,‏ ‎1960- author.
Young, M., contributor.
Description 1 map : col.
ISBN 978-1-100-19051-8
Catalogue number
  • M183-1/5-2011E-PDF
Departmental catalogue number 288929
Edition Preliminary version
Cartographic data Scale 1:100,000
Subject terms Geological maps
Geomorphology
Surficial geology
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