Late Cenozoic stress state distributions at the intersection of the Hellenic and Cyprus Arcs, SW Turkey

Basit Öğe Kaydı
dc.authoridPINAR, Ali/0000-0002-2641-7344
dc.contributor.authorOver, Semir
dc.contributor.authorÖzden, Süha
dc.contributor.authorPinar, Ali
dc.contributor.authorYilmaz, Huseyin
dc.contributor.authorKamaci, Zuheyr
dc.contributor.authorUnlugenc, Ulvi Can
dc.date.accessioned2025-01-27T20:47:39Z
dc.date.available2025-01-27T20:47:39Z
dc.date.issued2016
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThe history of the Late Cenozoic stress regime was determined for an area between the gulfs of Fethiye and Antalya. Fault kinematic analysis and inversion of focal mechanisms of shallow earthquakes reveal significant evolution of the regional stress regime in SW Anatolia, i.e., the area of interaction between the Hellenic and Cyprus arcs, from the Mio-Pliocene to the present time. Fault kinematic analysis yields two different normal faulting stress regimes along the southwestern part of Fethiye-Burdur Fault zone, e.g., in and around cameli Basin (Zone Al) and two different strike-slip to normal faulting stress regimes characterized by a roughly orthogonal set of extensional axes between Fethiye and Demre (Zone B) with an older NW-SE al axis for Mio-Pliocene and a younger NE-SW sigma 3 axis for Plio-Quaternary time. Inversion of focal mechanisms of the earthquakes occurring in Zone Al provideS an extensional stress. state with approximately N- sigma 3 axis. Inversion of those occurring in Zone B, south of Zone Al, yields a dominantly strike-slip stress state with a NE-SW sigma 3 axis and a NW-SE A1 axis respectively. The inversion slip vectors from fault planes yield a consistent normal faulting stress regime in Burdur Basin and its surroundings (i.e., along the northeastern part of Fethiye-Burdur Fault Zone, (Zone A2)) during Plio-Quaternary, continuing into recent time as indicated by earthquake focal mechanism inversions. Both states-have a consistent NW-SE cs3 axis. Fault kinematic analysis indicates NW-SE extension acting in Zone C (subarea between Demre and Antalya), south of Zone A2, during Mio-Pliocene time. The inversion of focal mechanisms yields normal faulting also characterized by a consistent NW-SE sigma 3 axis. The nearly orthogonal extensional stress regimes (NW-SE and NE-SW) obtained by inversion of both measured and seismic faults seem to have been acting contemporaneously with each other at different intensities from the Mio-Pliocene onwards in SW Turkey. This may be attributed to the geodynamic effects related to the subduction of the African plate beneath Anatolia diffusing along the Hellenic and Cyprus arcs and in the west-southwestward extrusion of Anatolia. The cause of the early NW-SE extension is the slab-pull force due to the subduction process along the Cyprus arc, considered to be dotninant until the Plio-Quaternary in the western part of the study area in zones A1 and B. The dominant status of the Cyprus arc continues today in the eastern part of study area in zones A2 and C. The later NE-SW to present day approximately N-S extension, dominant since the Plio-Quaternary, is related to the combined forces of the Anatolian extrusion and the subduction process along the Hellenic arc. (C) 2016 Elsevier Ltd. All rights reserved.
dc.description.sponsorshipTUBITAK-CAYDAG [107Y321]
dc.description.sponsorshipThis work was financially supported by TUBITAK-CAYDAG (Project no: 107Y321). The authors would like to thank Catherine Yigit for assistance with English that improved a recent version of the text. The authors are also grateful to the two anonymous reviewers for their valuable comments and suggestions that greatly improved the quality of the manuscript.
dc.identifier.doi10.1016/j.jseaes.2016.10.003
dc.identifier.endpage102
dc.identifier.issn1367-9120
dc.identifier.issn1878-5786
dc.identifier.scopus2-s2.0-84997498715
dc.identifier.scopusqualityQ1
dc.identifier.startpage94
dc.identifier.urihttps://doi.org/10.1016/j.jseaes.2016.10.003
dc.identifier.urihttps://hdl.handle.net/20.500.12428/24994
dc.identifier.volume132
dc.identifier.wosWOS:000390181000007
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofJournal of Asian Earth Sciences
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectInversion
dc.subjectStress state
dc.subjectFault-slip vector
dc.subjectEarthquake
dc.subjectSW Anatolia
dc.titleLate Cenozoic stress state distributions at the intersection of the Hellenic and Cyprus Arcs, SW Turkey
dc.typeArticle

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