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Seismic refraction evidence for a basement ridge between the Derbyshire Dome and the W of Charnwood Forest

Results from a 40-km seismic refraction profile crossing a series of positive gravity anomalies extending across the postulated mouth of the Widmerpool Gulf are reported. A refractor with a similar velocity to the Precambrian rocks of Charnwood Forest dips away from Charnwood to the southern flank of the Derbyshire Dome to a depth of 2 km. This refractor is faulted into horst and graben structures. The horst blocks correlate with the positive gravity anomalies. A northern boundary fault to the Precambrian outcrops of Charnwood is defined.

This article has been cited by other articles:

				M. D. Brasier, J. K. Ingham, and A. W. A. Rushton Cambrian Geological Society, London, Memoirs, 1992; 13: 13 - 18. [Abstract] [PDF]

				P. K. H. MAGUIRE CHARM II--A deep reflection profile within the central England microcraton Journal of the Geological Society, 1987; 144: 661 - 670. [Abstract] [PDF]

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