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Normal faulting and crustal deformation, Alkyonides Gulf and Perachora peninsula, eastern Gulf of Corinth rift basin, Greece

Leeder, M.R., Portman, C., Andrews, J.E., Collier, R.E., Finch, E., Gawthorpe, R.L., McNeill, L.C., Perez-Arlucea, M. and Rowe, P. (2005) Normal faulting and crustal deformation, Alkyonides Gulf and Perachora peninsula, eastern Gulf of Corinth rift basin, Greece Journal of the Geological Society, 162, (3), pp. 549-561. (doi:10.1144/0016-764904-075).

Record type: Article

Abstract

Geophysical, structural, geochronological and geomorphological data indicate that the Psatha, East Alkyonides, Skinos and Pisia faults are Holocene-active structures whereas the status of the West Alkyonides, Strava, Perachora and Loutraki faults is less certain. We see no evidence for significant lateral surface fault growth. New data for late-Pleistocene footwall uplift of the Psatha fault is comparable to previously estimated Holocene rates. Pre-Holocene stratigraphic sequences in the Alkyonides gulf enable calculation of vertical displacement on the Skinos fault, in the range 1.42 - 1.60 km over >0.6 My. Previous palaeoseismological studies indicate comparable displacement rates extrapolated to 0.61-2.20 My, whereas extrapolation of previous geodetic data indicate a range 0.17-0.46 Ma. The latter is too short given the evidence of the stratigraphic record, signifying either that they may not be representative of longer-term rates, or that significant deformation has taken place elsewhere e.g. on offshore antithetic faults. A case is established for uniform late Quaternary (post-MIS 7) uplift of the Perachora peninsula at rates of c. 0.2-0.3 mm a-1. The lack of regional tilting over Perachora/Corinth/Isthmia is in marked contrast to the situation in the Alkyonides/Megara basins to the east.

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Published date: 2005

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Local EPrints ID: 37746
URI: http://eprints.soton.ac.uk/id/eprint/37746
ISSN: 0016-7649
PURE UUID: c4929a1c-10e5-48b4-9050-149c94f2134a

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Date deposited: 26 May 2006
Last modified: 17 Jul 2017 15:41

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Contributors

Author: M.R. Leeder
Author: C. Portman
Author: J.E. Andrews
Author: R.E. Collier
Author: E. Finch
Author: R.L. Gawthorpe
Author: L.C. McNeill
Author: M. Perez-Arlucea
Author: P. Rowe

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