The Wilhelmøya Formation (Upper Triassic-Lower Jurassic) at Bohemanflya, Spitsbergen

An 18.5 m thick shale sequence of Norian-Rhaetian age is described from the Bohemanflya-Syltoppen area (north of Isfjorden. central Spitsbergen). Lithological, petrographical and palynological analyses show that the sequence represents a marginal development of the lower part of the Wilhelmeya Forma...

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Bibliographic Details
Published in:Polar Research
Main Authors: Dypvik, Henning, Hvoslef, Sven, Bjærke, Tor, Finnerud, Egil
Format: Article in Journal/Newspaper
Language:English
Published: Norwegian Polar Institute 1985
Subjects:
Wilhelmøya
Bohemanflya
Isfjord*
Isfjorden
Polar Research
Spitsbergen
Online Access:https://polarresearch.net/index.php/polar/article/view/2522
https://doi.org/10.3402/polar.v3i2.6949
Description
Summary:An 18.5 m thick shale sequence of Norian-Rhaetian age is described from the Bohemanflya-Syltoppen area (north of Isfjorden. central Spitsbergen). Lithological, petrographical and palynological analyses show that the sequence represents a marginal development of the lower part of the Wilhelmeya Formation. The depositional history at the Triassic-Jurassic transition is discussed in the light of this new evidence. The Wilhelmøya Formation was probably deposited during a weak marine transgression over an area of low relief. Low sediment supply and current and wave reworking of the sediments characterized the depositional conditions.

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