Overburden deformation associated with halokinesis in the Southern North Sea: implications for the origin of the Silverpit Crater |
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| Authors: | Ken Thomson |
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| Institution: | (1) School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK |
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| Abstract: | Gravitational collapse in response to the creation of salt swells and diapirs is a common phenomenon within regions such as the Southern North Sea. Although collapse faulting and slumping of linear salt swell flanks has previously been documented, the existence of concentric collapse structures surrounding diapirs and isolated salt lows is a recently recognised feature. 3-D seismic data from the Southern North Sea demonstrates that concentric collapse faulting around both diapirs and subcircular salt lows is common. The recognition of concentric collapse structures formed in response to salt withdrawal, and adjacent inflation, provides an alternative mechanism for the origin of the proposed Silverpit impact crater. |
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| Keywords: | Concentric faulting Gravitational collapse Salt tectonics Silverpit Crater |
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