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The palaeogeographical significance of lateral variations in the ratio of sandstone to shale and other features of the Aberystwyth Grits

Published online by Cambridge University Press:  01 May 2009

J. P. B. Lovell
J. P. B. Lovell
Affiliation:
Grant Institute of Geology, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JW
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Summary

Statistical sampling of the Aberystwyth Grits, using a method previously employed in an analogous study of Tyee Formation, Oregon, shows an overall decrease in the ratio of sandstone to shale from south-west to north-east, away from the supposed source of depositing currents. Comparison with other methods of proximality evaluation in turbidite sequences indicates that at least in this case the ratio of sandstone to shale is the most sensitive indicator of palaeogeography.

Type
Articles
Information
Geological Magazine , Volume 107 , Issue 2 , March 1970 , pp. 147 - 158
Copyright
Copyright © Cambridge University Press 1970

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References

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