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Interpretation of the regional gravity and magnetic surveys of Wales, using shaded relief and Euler deconvolution techniques

Published online by Cambridge University Press:  01 May 2009

A. J. W. McDonald ,
C. J. N. Fletchert ,
R. M. Carruthers ,
D. Wilson  and
R. B. Evans
A. J. W. McDonald
Affiliation:
Natural Environment Research Council, British Geological Survey, Keyworth, Nottingham NG12 5GG, U.K.
C. J. N. Fletchert
Affiliation:
Natural Environment Research Council, British Geological Survey, Bryn Eithyn Hall, Llanfarian, Aberystwyth SY23 4BY, U.K.
R. M. Carruthers
Affiliation:
Natural Environment Research Council, British Geological Survey, Keyworth, Nottingham NG12 5GG, U.K.
D. Wilson
Affiliation:
Natural Environment Research Council, British Geological Survey, Bryn Eithyn Hall, Llanfarian, Aberystwyth SY23 4BY, U.K.
R. B. Evans
Affiliation:
Natural Environment Research Council, British Geological Survey, Keyworth, Nottingham NG12 5GG, U.K.
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Abstract

Regional gravity and aeromagnetic data of Wales have been processed using a variety of techniques. Image processing has greatly assisted qualitative interpretation, whilst automated procedures have provided additional quantitative information. The shaded relief images emphasize gradients in the potential fields, and are useful for displaying strong linear features. The Euler deconvolution method produces plotted solution maps, which define the position of the source of the gravity and magnetic anomalies. Euler solution maps of Wales and the adjacent continental shelf are presented for the first time. These maps are interpreted in relation to the known geology, with special emphasis on the Lower Palaeozoic Welsh Basin. It is proposed that the Euler solutions define a network of fault-bounded blocks within the Precambrian basement.

Type
Articles
Information
Geological Magazine , Volume 129 , Issue 5 , September 1992 , pp. 523 - 531
Copyright
Copyright © Cambridge University Press 1992

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