Cenozoic development of northern Svalbard based on thermochronological data

Abstract Northern Svalbard represents a basement high surrounded by the Norwegian‐Greenland Sea/Fram Strait, Eurasian Basin, the Barents Shelf and the onshore Central Tertiary Basin (CTB). Published apatite fission track (AFT) data indicate Mesozoic differential, fault‐controlled uplift and exhumati...

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Bibliographic Details
Published in:Terra Nova
Main Authors: Dörr, Nina, Lisker, Frank, Piepjohn, Karsten, Spiegel, Cornelia
Other Authors: Deutsche Forschungsgemeinschaft, Universität Bremen
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2019
Subjects:
Greenland
Svalbard
Fram Strait
Greenland Sea
Online Access:http://dx.doi.org/10.1111/ter.12402
https://onlinelibrary.wiley.com/doi/pdf/10.1111/ter.12402
https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ter.12402
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Summary:Abstract Northern Svalbard represents a basement high surrounded by the Norwegian‐Greenland Sea/Fram Strait, Eurasian Basin, the Barents Shelf and the onshore Central Tertiary Basin (CTB). Published apatite fission track (AFT) data indicate Mesozoic differential, fault‐controlled uplift and exhumation of the region. Thermal history modelling of published and new AFT and (U–Th–Sm)/He ages of 51–153 Ma in the context of regional stratigraphy and geomorphology implies at least two, possibly three, uplift and exhumation stages since late Mesozoic, separated by episodes of subsidence and sediment deposition. Late Cretaceous/Palaeocene exhumation and subsequent burial appear to be related with the transition of compressional to transpressional collision of Svalbard and Greenland during the Eurekan Orogeny. Renewed exhumation since the Oligocene probably results from passive margin formation after the separation of Svalbard and Greenland, when a new offshore sedimentary basin opened west of Svalbard. Final uplift since the Miocene eventually re‐exposed the palaeosurface of northern Svalbard.

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