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Rift migration and lateral propagation: evolution of normal faults and sediment-routing systems of the western Corinth rift (Greece)

By
Mary Ford
Mary Ford
Université de Lorraine, ENSG, INP, rue du Doyen-Marcel-Roubault,54501 Vandoeuvre-lès-Nancy, FranceCPRG, UMR 7358, 15 Rue Notre-Dame-des-Pauvres,54501 Vandoeuvre-lès-Nancy, France
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Romain Hemelsdaël
Romain Hemelsdaël
CPRG, UMR 7358, 15 Rue Notre-Dame-des-Pauvres,54501 Vandoeuvre-lès-Nancy, France
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Marco Mancini
Marco Mancini
CNR-IGAG, Cnr Area della Ricerca Roma 1, Via Salaria km 29,300,00015 Monterotondo Scalo, Rome, Italy
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Nikolaos Palyvos
Nikolaos Palyvos
Department of Geography, Harokopio University, 70 El. Venizelou Street, Athens, Greece
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R. L. Gawthorpe
R. L. Gawthorpe
Department of Geography, Harokopio University, 70 El. Venizelou Street, Athens, Greece
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Published:
January 01, 2017

Abstract:

The active Corinth rift records hanging-wall migration of faulting and slip-rate acceleration. The rift initiated at approximately 5–4 Ma, and older parts are well exposed in the northern Peloponnese. A new correlation of chrono- and lithostratigraphy and structure across the onland central to westernmost rift with offshore data reveals westward rift propagation, as well as northward fault migration. Northward fault migration ended first in the east, with the stabilization of major north-dipping faults that now bound the Gulf. The basin then propagated to the WNW in two stages, each involving the initiation of a new fault that propagated east to SE to link to the stable fault system. Extension rates accelerated in distinct steps as the rift opened to the west. The youngest faults in the westernmost rift are associated with high seismicity and highest geodetic extension due to rapid fault growth and linkage at depth.

The early synrift succession infilled substantial inherited palaeo-relief. Antecedent rivers established vigorous sediment-routing systems that controlled facies distribution throughout rifting, albeit with drainage reorganization during fault-migration events. Multiple deepening events recorded in the stratigraphy can be due to lateral rift propagation. The transition from rift initiation to rift climax is, therefore, diachronous along the rift axis.

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Contents

Geological Society, London, Special Publications

The Geometry and Growth of Normal Faults

C. Childs
C. Childs
University College Dublin, Ireland
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R. E. Holdsworth
R. E. Holdsworth
University of Durham, UK
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C. A.-L. Jackson
C. A.-L. Jackson
Imperial College, UK
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T. Manzocchi
T. Manzocchi
University College Dublin, Ireland
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J. J. Walsh
J. J. Walsh
University College Dublin, Ireland
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G. Yielding
G. Yielding
Badley Geoscience Ltd, UK
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Geological Society of London
Volume
439
ISBN electronic:
9781862399716
Publication date:
January 01, 2017

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