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New 234U-230Th coral dates from the western Gulf of Corinth: Implications for extensional tectonics

Houghton, SL; Roberts, GP; Papanikolaou, ID; McArthur, JM; Gilmour, MA; (2003) New 234U-230Th coral dates from the western Gulf of Corinth: Implications for extensional tectonics. Geophysical Research Letters , 30 (19) , Article 2013. 10.1029/2003GL018112. Green open access

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Abstract

We derive rates of uplift of ∼0.7–0.8 mm/yr for the western end of the Gulf of Corinth, Greece, using geomorphic paleaoshoreline modeling. We calibrate the modeling with new 234U-230Th dates on the coral Cladocora caespitosa collected from raised marine terraces uplifted in the footwall of the active Psathopyrgos fault, the only major active normal fault, reported on published maps controlling the downthrown Rio Straits at the western end of the Gulf of Corinth. In this area of high (15–22 mm/yr) extension rates measured with GPS, the ratio of uplift-rate to extensional velocity is 0.025–0.035, much lower than values of 0.15–0.25 found further east in the gulf. These low values imply that if GPS extension rates are correct then mechanical/kinematic models developed for the eastern and central gulf may not be applicable to the western gulf.

Type: Article
Title: New 234U-230Th coral dates from the western Gulf of Corinth: Implications for extensional tectonics
Open access status: An open access version is available from UCL Discovery
DOI: 10.1029/2003GL018112
Publisher version: http://dx.doi.org/10.1029/2003GL018112
Language: English
Additional information: Copyright 2003 by the American Geophysical Union
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/957577
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