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Geometry, kinematics and rates of deformation in a normal fault segment boundary, central Greece

Morewood, NC; Roberts, GP; (1997) Geometry, kinematics and rates of deformation in a normal fault segment boundary, central Greece. Geophysical Research Letters , 24 (23) 3081 - 3084. 10.1029/97GL03100. Green open access

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Abstract

The geometry, kinematics and rates of deformation within a fault segment boundary between the ends of two major active normal fault segments have been investigated through examination of a faulted 126 ka marine terrace. Slip‐vector azimuths defined by striations on the faults indicate N‐S extension on c. E‐W faults, sub‐parallel to those from earthquake focal mechanisms, together with significant and contemporaneous E‐W extension on c. N‐S faults. Summed rates of E‐W extension along a c. 550 m transect (0.17 mm/yr) are comparable with those for N‐S extension (0.20 mm/yr) along a c. 350 m transect. Our observations show that distributed non‐plane strain extension occurs in fault segment boundaries and this should be noted when studying fault‐tip fracture toughness and regional deformation rates.

Type: Article
Title: Geometry, kinematics and rates of deformation in a normal fault segment boundary, central Greece
Open access status: An open access version is available from UCL Discovery
DOI: 10.1029/97GL03100
Publisher version: http://dx.doi.org/10.1029/97GL03100
Language: English
Additional information: Copyright 1997 by the American Geophysical Society
Keywords: Boundary, Geometry, Kinematics, Corinth earthquakes, Lost river, Rupture, Idaho, Gulf
UCL classification: UCL
UCL > Provost and Vice Provost Offices
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/34670
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