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Regional crustal architecture of Ellesmere Island, Arctic Canada

Christian Schiffer and Randell Stephenson
Regional crustal architecture of Ellesmere Island, Arctic Canada (in Circum-Arctic lithosphere evolution, Victoria Pease (editor) and B. Coakley (editor))
Special Publication - Geological Society of London (June 2017) 460 (1): 19-32

Abstract

New deep seismological data from Ellesmere Island and the adjacent Arctic continental margin provide new information about the crustal structure of the region. These data were not available for previous regional crustal models. This paper combines and redisplays previously published results - a gravity-derived Moho map and seismological results -to produce new maps of the Moho depth, the depth to basement and the crystalline crustal thickness of Ellesmere Island and contiguous parts of the Arctic Ocean, Greenland and Axel Heiberg Island. Northern Ellesmere Island is underlain by a thick crustal block (Moho at 41 km, c. 35 km crust). This block is separated from the Canada-Greenland craton in the south by a WSW-ENE-trending channel of thinned crystalline crust (Moho at 30-35 km, <20 km thick crust), which is overlain by a thick succession of metasedimentary and younger sedimentary rocks (15-20 km). The Sverdrup Basin in the west and the Lincoln Sea in the east interrupt the crustal architecture of central Ellesmere Island, which is interpreted to be more representative of its initial post-Ellesmerian Orogen structure, but with a later Sverdrup Basin and Eurekan overprint.


ISSN: 0305-8719
EISSN: 2041-4927
Coden: GSLSBW
Serial Title: Special Publication - Geological Society of London
Serial Volume: 460
Serial Issue: 1
Title: Regional crustal architecture of Ellesmere Island, Arctic Canada
Title: Circum-Arctic lithosphere evolution
Author(s): Schiffer, ChristianStephenson, Randell
Author(s): Pease, Victoriaeditor
Author(s): Coakley, B.editor
Affiliation: Durham University, Department of Earth Sciences, Durham, United Kingdom
Pages: 19-32
Published: 20170612
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 69
Accession Number: 2017-076052
Categories: Structural geologyApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects., geol. sketch map
N80°00'00" - N82°00'00", W75°00'00" - W70°00'00"
N80°00'00" - N82°00'00", W85°00'00" - W80°00'00"
N82°00'00" - N84°00'00", W68°00'00" - W63°00'00"
Secondary Affiliation: University of Aberdeen, GBR, United Kingdom
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201740
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