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The Eller Beck Formation (Bajocian) of the Ravenscar Group of NE Yorkshire

Published online by Cambridge University Press:  01 May 2009

R. W. O'B. Knox
R. W. O'B. Knox
Affiliation:
Sedgwick Museum Downing Street Cambridge
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Summary

The Eller Beck Formation is a thin marine intercalation in a predominantly non-marine Middle Jurassic sequence of coal measures facies. The formation consists of thin transgressive ironstones and siltstones at the base which are overlain by a thicker regressive sequence of shale passing upwards into sandstone. The close association between changes in the local subsidence pattern and the transgression suggest that the incursion resulted from epeirogenic movement rather than from eustatic rise in sea level or a purely sedimentation-controlled change in delta distributary pattern. Facies distribution was greatly affected by local synsedimentary tectonic movement. Water depths were probably very small throughout, and tidal effects on sedimentation minimal.

Type
Articles
Information
Geological Magazine , Volume 110 , Issue 6 , November 1973 , pp. 511 - 534
Copyright
Copyright © Cambridge University Press 1973

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