Articles | Volume 9, issue 4
Solid Earth, 9, 923–951, 2018
https://doi.org/10.5194/se-9-923-2018
Solid Earth, 9, 923–951, 2018
https://doi.org/10.5194/se-9-923-2018

Research article 20 Jul 2018

Research article | 20 Jul 2018

Neoproterozoic and post-Caledonian exhumation and shallow faulting in NW Finnmark from K–Ar dating and pT analysis of fault rocks

Jean-Baptiste P. Koehl et al.

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Jean-Baptiste Koehl on behalf of the Authors (13 Jun 2018)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (16 Jun 2018) by Bernhard Grasemann
RR by Anonymous Referee #1 (29 Jun 2018)
ED: Publish subject to technical corrections (01 Jul 2018) by Bernhard Grasemann
ED: Publish subject to technical corrections (01 Jul 2018) by Federico Rossetti(Executive Editor)
AR by Jean-Baptiste Koehl on behalf of the Authors (02 Jul 2018)  Author's response    Manuscript
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Short summary
We dated the formation of large faults in order to constrain the tectonic and exhumation history of the Barents Sea and northern Norway. Some of the dated faults formed apprx. 1 Ga and are much older than expected. However, most dated faults were active during two periods of extension: 375–325 and 315–265 Ma. The study of minerals along these cracks shows that exposed rocks in Finnmark were exhumed from deep (> 10 km) to shallow depth (< 3.5 km) during the two periods of extension.