Regional crustal architecture of Ellesmere Island, Arctic Canada

Christian Schiffer, Randell Stephenson

Research output: Contribution to journalArticle

1 Citation (Scopus)

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.
Original languageEnglish
Pages (from-to)19-32
Number of pages13
JournalGeological Society Special Publications
Volume460
Issue number1
Early online date12 Jun 2017
DOIs
Publication statusPublished - 2018

Fingerprint

Moho
Crystalline materials
Sedimentary rocks
crust
Gravitation
crustal thickness
crustal structure
basin
craton
continental margin
sedimentary rock
gravity

Cite this

Regional crustal architecture of Ellesmere Island, Arctic Canada. / Schiffer, Christian; Stephenson, Randell.

In: Geological Society Special Publications , Vol. 460, No. 1, 2018, p. 19-32.

Research output: Contribution to journalArticle

@article{6d7cbb5a80134000abca7f5b521bbfb7,
title = "Regional crustal architecture of Ellesmere Island, Arctic Canada",
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.",
author = "Christian Schiffer and Randell Stephenson",
note = "Pease, V. & Coakley, B. (eds) 2018. Circum-Arctic Lithosphere Evolution The paper was motivated and developed under the umbrella of the project Circum Arctic Lithospheric Evolution (CALE). Thanks are given to the project leaders and all active participants. The paper was produced during a postdoctoral research fellowship of C. Schiffer at Durham University funded by the Carlsberg Foundation. The comments of two anonymous reviewers are much appreciated and have led to a number of important clarifications to our results and interpretations.",
year = "2018",
doi = "10.1144/SP460.8",
language = "English",
volume = "460",
pages = "19--32",
journal = "Geological Society Special Publications",
issn = "0305-8719",
publisher = "Geological Society of London",
number = "1",

}

TY - JOUR

T1 - Regional crustal architecture of Ellesmere Island, Arctic Canada

AU - Schiffer, Christian

AU - Stephenson, Randell

N1 - Pease, V. & Coakley, B. (eds) 2018. Circum-Arctic Lithosphere Evolution The paper was motivated and developed under the umbrella of the project Circum Arctic Lithospheric Evolution (CALE). Thanks are given to the project leaders and all active participants. The paper was produced during a postdoctoral research fellowship of C. Schiffer at Durham University funded by the Carlsberg Foundation. The comments of two anonymous reviewers are much appreciated and have led to a number of important clarifications to our results and interpretations.

PY - 2018

Y1 - 2018

N2 - 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.

AB - 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.

U2 - 10.1144/SP460.8

DO - 10.1144/SP460.8

M3 - Article

VL - 460

SP - 19

EP - 32

JO - Geological Society Special Publications

JF - Geological Society Special Publications

SN - 0305-8719

IS - 1

ER -