A healed strike-slip plate boundary in North Greenland indicated through associated pull-apart basins

Eckart Håkansson, Stig A. Schack Pedersen

Publikation: Bidrag til bog/rapport/konferenceproceedingsBogkapitelForskningpeer review

15 Citationer (Scopus)

Abstrakt

In the North Atlantic, Laurentia-Eurasia break-up commenced in the Late Carboniferous, largely following the structural grain of the Caledonian Fold Belt. However, in the Arctic region, a 45° offset in the plate boundary between North Greenland and Svalbard was determined by a number of pre-Caledonian fundamental faults in North Greenland. As a result, this segment of the plate boundary experienced significant episodes of combined transtension and transpression, in part controlled by the movement of a temporarily independent Greenland Plate. Late Permian-Mesozoic deposits in the North Greenland Wandel Sea Basin record the plate-boundary history along this offset, in our view in a series of at least 20, variously disturbed, pull-apart basins, most of which can be assigned to four major episodes of pull-apart basin formation. The direction of the pre-existing fundamental faults, in combination with the regional variation in rock properties of both the basin floor and basin fill, explains the marked differences in tectonic style recorded along the plate boundary.

OriginalsprogEngelsk
TitelSedimentary basins and crustal processes at continental margins
UndertitelFrom modern hyper-extended margins to deformed ancient analogues
RedaktørerG.M. Gibson, F. Roure, G. Manatschal
ForlagGeological Society of London
Sider143-169
Antal sider27
ISBN (Trykt)978-1-86239-720-0
DOI
StatusUdgivet - 2015

Publikationsserier

NavnGeological Society, London, Special Publications
ForlagGeological Society of London
Vol/bind413
ISSN (Trykt)0305-8719

Programområde

  • Programområde 4: Mineralske råstoffer

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