Slip rates of the Aigion and Eliki Faults from uplifted marine terraces, Corinth Gulf, Greece

• Published in: Comptes rendus Geoscience. Academie des Sciences, Paris Vol. 336; no. 4-5; pp. 325 - 334
• Main Authors: De Martini, Paolo Marco, Pantosti, Daniela, Palyvos, Nikolaos, Lemeille, Francis, McNeill, Lisa, Collier, Richard
• Format: Journal Article Book Chapter
• Language: English; French
• Published: 01.03.2004
• Subjects: Marine; MED, Greece, Korinthiakos Gulf
• ISSN: 1631-0713; 1778-7025
• DOI: 10.1016/j.crte.2003.12.006

Along the southern coast of the Gulf of Corinth, important coastal uplift is illustrated by raised Late-Pleistocene marine platforms. Terrace remnants preserved on the footwall of the Aigion and Eliki Faults were mapped in detail. To derive cumulative uplift rates, the individual terraces were tentatively correlated with the eustatic sea-level curve, constrained by some direct dating of the deposits blanketing the terraces. We obtain uplift rates of 1.05-1.2 mmyr super(-1) for the Aigion Fault footwall and of 1.0 and 1.25 mmyr super(-1) or the East and West Eliki Fault footwalls respectively. A forward modelling procedure was adopted to fit the best-preserved terrace transects, using a code based on standard dislocation theory and assuming reasonable scenarios of regional uplift. We obtained maximum slip rates consistently in the range of 7-11 mmyr super(-1) for the West and East Eliki Faults and of 9-11 mmyr.1 for the Aigion Fault.Original Abstract: Le long de la cote sud du golfe de Corinthe, un important soulevement cotier est illustre par des plates-formes marines soulevees, daage Pleistocene superieur. Tous les fragments de terrasses preserves dans le mur des failles daAigion et daEliki ont ete cartographies en detail. Afin de determiner les taux de soulevement cumules, une correlation, contrainte par quelques datations directes des depots recouvrant les terrasses, a ete tentee, pour chaque terrasse, avec les courbes eustatiques. Nous obtenons des taux de deplacements de 1,05-1,2 mman super(-1) pour le mur de la faille daAigion et de 1,0 a 1,25 mman super(-1) respectivement pour les murs des failles daEliki est et ouest. Une procedure de modele inverse a ete adoptee pour correler les transects de terrasses les mieux preserves, en utilisant un code base sur la theorie de dislocation standard et en prenant des scenarios raisonnables de soulevement regional. Nous avons obtenu des taux de deplacement maximaux coherents compris dans laintervalle 7-11 mman super(-1) pour les failles daEliki est et ouest et 9-11 mman super(-1) pour la faille daAigion.