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The Petrography of the Blea Wyke Series

Published online by Cambridge University Press:  01 May 2009

R. H. Rastall  and
J. E. Hemingway
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Summary

The general results which have accrued from this investigation may be summarized as follows: the shaly type of Liassic sedimentation with much pyrite, indicating a quiet sea with abundant sulphur compounds, gradually gave place to a regular and at first fairly steady shallowing of the water with, somewhat later, occasional incursions of strong currents bringing pebbles and broken fossils from an area undergoing active erosion. At the same time the amount of iron introduced, both in solution and in the form of derived ooliths, increased steadily, culminating in the siliceous oolite of the Dogger, which is essentially similar to the rocks composing this formation to the west and north-west.

Type
Original Articles
Information
Geological Magazine , Volume 72 , Issue 3 , March 1935 , pp. 125 - 138
Copyright
Copyright © Cambridge University Press 1935

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References

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