Evolution of the central West Greenland margin and the Nuussuaq Basin: localised basin uplift along a stable continental margin proposed from thermochronological data

Jess, S., Stephenson, R. and Brown, R. (2018) Evolution of the central West Greenland margin and the Nuussuaq Basin: localised basin uplift along a stable continental margin proposed from thermochronological data. Basin Research, (doi:10.1111/bre.12301) (Early Online Publication)

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Abstract

The Late Cenozoic is typically considered a time of widespread episodic tectonic uplift along the West Greenland continental margin (36 Ma – 2 Ma), similar to other margins across the North Atlantic, such as Norway, East Greenland and the UK. The present study re‐examines and re‐models onshore thermochronological data from central West Greenland and the Cretaceous Nuussuaq Basin, utilising a Bayesian modelling approach and new concepts related to radiation damage within apatite. These new thermal histories indicate slow protracted cooling has occurred across the southern extent of the margin during the Mesozoic and Cenozoic, whereas those from within the Nuussuaq Basin display reheating through the Late Cretaceous/Palaeogene and cooling to present. Results suggest no significant Late Cenozoic uplift has occurred along the southern margin, while cooling in the Nuussuaq Basin is consistent with events outlined in the basin's stratigraphy and imply uplift during volcanism and an isostatic response to the unroofing of the lithosphere has elevated the modern topography. These results imply significant tectonism in the region ceased by ~45 Ma, yet have wider implications regarding how low temperature thermochronology data are treated and our understanding of the post rift evolution of passive margins.

Item Type:Articles
Additional Information:The work con-tained in this publication contains work conducted during aPhD study undertaken as part of the Natural EnvironmentResearch Council (NERC) Centre for Doctoral Training(CDT) in Oil and Gas [grant number NEM00578X/1] and issponsored by the University of Aberdeen.
Status:Early Online Publication
Refereed:Yes
Glasgow Author(s) Enlighten ID:Brown, Professor Roderick
Authors: Jess, S., Stephenson, R., and Brown, R.
College/School:College of Science and Engineering > School of Geographical and Earth Sciences > Earth Sciences
Journal Name:Basin Research
Publisher:Wiley
ISSN:0950-091X
ISSN (Online):1365-2117
Published Online:24 May 2018
Copyright Holders:
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<fragment>Copyright © 2018 The Authors. Basin Research © 2018 John Wiley & Son
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 Research © 2018 John Wiley & Sons Ltd, European Association of Geoscientists &
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First Published:First published in Basin Research 2018
Publisher Policy:Reproduced under a Creative Commons License

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