Skip to Main Content
Book Chapter

Regional crustal architecture of Ellesmere Island, Arctic Canada

By
Christian Schiffer
Christian Schiffer
Department of Earth Sciences, Durham University, Durham DH1 3LE, UK
Search for other works by this author on:
Randell Stephenson
Randell Stephenson
School of Geosciences, University of Aberdeen, Aberdeen AB24 3UE, UK
Search for other works by this author on:
Published:
January 01, 2018

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.

You do not currently have access to this article.
Don't already have an account? Register

Figures & Tables

Contents

Geological Society, London, Special Publications

Circum-Arctic Lithosphere Evolution

V. Pease
V. Pease
Stockholm University, Sweden
Search for other works by this author on:
B. Coakley
B. Coakley
University of Alaska, Fairbanks, USA
Search for other works by this author on:
The Geological Society of London
Volume
460
ISBN electronic:
9781786203410
Publication date:
January 01, 2018

GeoRef

References

Related

A comprehensive resource of eBooks for researchers in the Earth Sciences

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal