Late Jurassic—Early Cretaceous strike-slip deformation in the Nordenskjöld Formation of Graham Land

Whitham, A.G.; Storey, B.C.. 1989 Late Jurassic—Early Cretaceous strike-slip deformation in the Nordenskjöld Formation of Graham Land. Antarctic Science, 1 (03). 269-278. https://doi.org/10.1017/S0954102089000398

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Official URL: http://dx.doi.org/10.1017/S0954102089000398

Abstract/Summary

Upper Jurassic–Lower Cretaceous anoxic mudstones and air-fall ashes of the Nordenskjöld Formation are exposed on the eastern coast of Graham Land. Deformation of the strata has a long history spanning dewatering and lithification and was probably produced in a strike-slip tectonic regime. Available evidence suggests the onset of deformation in the region was during Tithonian times. The strike-slip deformation provides further evidence of a plate boundary along the eastern margin of the peninsula during the break-up of Gondwana and the movement of the crustal blocks of West Antarctica. It may also be related to a change in the spreading history of the Weddell Sea region and be the cause of a major facies change from fine anoxic to coarse clastic sedimentation.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1017/S0954102089000398
ISSN:	0954-1020
Additional Keywords:	anoxic sedimentation, back-arc, Weddell Sea
Date made live:	30 Oct 2018 11:24 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/521382

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.1017/S0954102089000398

ISSN:

0954-1020

Additional Keywords:

anoxic sedimentation, back-arc, Weddell Sea

Date made live:

30 Oct 2018 11:24 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/521382