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Geophysical surveys of the East Kirkton Limestone, Viséan, West Lothian, Scotland

Published online by Cambridge University Press:  03 November 2011

Jonathan J. Doody
Affiliation:
Department of Geology & Applied Geology, University of Glasgow, Glasgow G12 8QQ, Scotland
Rona A. R. McGill
Affiliation:
Department of Geology & Applied Geology, University of Glasgow, Glasgow G12 8QQ, Scotland
David Darby
Affiliation:
Department of Geology & Applied Geology, University of Glasgow, Glasgow G12 8QQ, Scotland
David K. Smythe
Affiliation:
Department of Geology & Applied Geology, University of Glasgow, Glasgow G12 8QQ, Scotland

Abstract

Magnetic and resistivity geophysical surveys conducted across the only known exposure of the East Kirkton Limestone have produced new information upon its extent. This is important to determine because of its unique faunal assemblage and possible hot spring deposition, suggesting a potential for precious metal mineralisation. Magnetic anomalies are attributed to basalts within the Bathgate Hills Volcanic Formation. Modelling of the magnetic data demonstrates a general dip to the west of about 25°, and the presence of significant local faulting. Modelling of vertical electrical sounding data shows the East Kirkton sequence (the limestone and associated beds) to be a low resistivity layer within the more highly resistive volcanic sequence. The East Kirkton sequence is seen to deepen to the west, and also to the north probably by faulting. Therefore the present exposure is the only near surface occurrence of the East Kirkton Limestone locally, but within the area of the survey no lateral limits to the formation are observed.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1993

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