The Maryport fault: the post-Caledonian tectonic history of southern Britain in microcosm
- 1 March 1993
- journal article
- Published by Geological Society of London in Journal of the Geological Society
- Vol. 150 (2) , 247-250
- https://doi.org/10.1144/gsjgs.150.2.0247
Abstract
The Maryport fault forms part of the faulted southern margin of the Northumberland-Solway Basin. Seismic reflection data reveal a complex history of repeated fault reactivation. Large oblique-normal displacements on the fault controlled early Carboniferous extensional basin development. Subsequently, Variscan basin inversion was accompanied by partial reversal of the fault. In Permian and Mesozoic times, renewed oblique-normal displacements strongly influenced basin subsidence. Further partial reverse displacement occurred as the Solway Basin was again inverted, probably in mid-Tertiary times in response to Alpine compression. The Maryport fault is most unusual, therefore, in providing direct evidence of the principal post-Caledonian tectonic events in southern Britain.Keywords
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