Palaeogene tectono-stratigraphic evolution of the Western Barents Sea, Svalbard and Northeast Greenland

Thomas Guldborg Petersen

Abstract

This thesis contains a detailed interpretation of seismic facies of the Paleogene sedimentary
succession on the Northeast Greenland Shelf. Based on this, a model for the depostional
environment and its interplay with the large scale plate tectonic evolution is produced. The model
suggests deposition in a marine environment, where the break-up related tectonism controlled the
depositional geometries. A correlation of the Paleogene sedimentary succession on the conjugate
margins of the NE Greenland and West Barents Sea shelves is suggested. By assuming that the
thermal history of the margins is similar and by using the dated volcanic events onshore Greenland
temporal constraints of the deposition on the Northeast Greenland Shelf are much improved. Based
on this correlation, the succession can be subdivided into pre-, syn- and post- volcanic intervals.
The provenance of the sedimentary succession deposited in the Central Tertiary Basin onshore
Svalbard is analysed using radiometric dating of zircons. The succession shows an easterly source
for the Paleocene, and a pronounced shift to an easterly source during the Eocene, as a response to
the evolving Eurekan Orogeny.
Original languageEnglish
PublisherDepartment of Geosciences and Natural Resource Management, Faculty of Science, University of Copenhagen
Number of pages125
Publication statusPublished - 2015

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