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Alluvial channel bank-collapse phenomena in the Old Red Sandstone Hitra Group, Western Central Norway

Published online by Cambridge University Press:  01 May 2009

R. Bøe
R. Bøe
Affiliation:
Geological Survey of Norway, Leif Erikssons vei 39, P. O. Box 3006, N-7001 Trondheim, Norway
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Abstract

The Old Red Sandstone (ORS) on the island of Hitra forms an approximately 1350 m thick succession of alternating continental mudstones, sandstones and conglomerates of possibly latest Silurian to Devonian age. Within the middle part of this succession, just above a major, scoured surface, a spectacular slump feature was observed. The phenomenon is interpreted as a unit of overbank/channel bank mudstones which, because of undercutting and liquidization, caved into a low sinuosity river channel. The Hitra sequence is the only one in the Norwegian ORS where such phenomena have as yet been identified.

Type
Articles
Information
Geological Magazine , Volume 125 , Issue 1 , January 1988 , pp. 51 - 56
Copyright
Copyright © Cambridge University Press 1988

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