Late Cenozoic Stress State in Gulf of Güllük and Surroundings, SW Anatolia
This study was performed with the aim of revealing the Late Cenozoic stress state of the Gulf of Güllük and close surroundings. In this study, the tectonic regime and stress states from the Pliocene to the present day were determined. Mesoscopic fault plane data were collected from outcrops at 19 di...
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Çanakkale Onsekiz Mart University
2021-12-01
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| Series: | Journal of Advanced Research in Natural and Applied Sciences |
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| Online Access: | https://dergipark.org.tr/en/download/article-file/1733211 |
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| author | Erdem Gündoğdu Suha Ozden Alper Demirci |
| author_facet | Erdem Gündoğdu Suha Ozden Alper Demirci |
| author_sort | Erdem Gündoğdu |
| collection | DOAJ |
| description | This study was performed with the aim of revealing the Late Cenozoic stress state of the Gulf of Güllük and close surroundings. In this study, the tectonic regime and stress states from the Pliocene to the present day were determined. Mesoscopic fault plane data were collected from outcrops at 19 different stations in the region between the Gulf of Güllük and Milas. Additionally, focal mechanism inverse solutions were calculated for 12 earthquakes larger than M:3.0 occurring from 2004 to 2015 to reveal the current tectonic regime. According to kinematic analysis results from fault assemblages and focal mechanism solutions for earthquakes, two tectonic regimes affected the region before the Pliocene and at present. In the first tectonic regime, strike-slip faulting developed under a NW-SE oriented compressional regime. There was an R ratio of 0.426 between the principal stress axes and this shows faulting had transtensional character. The region converted to a NE-SW oriented extensional regime dominated by normal faulting in the Quaternary. This currently effective extensional regime was understood from focal mechanism solutions of earthquakes developing in the region. The reason for this regime being effective is the rapid pull by the African plate on the Anatolian plate, which rides above the African plate, and horizontal extension in the Anatolian plate. |
| format | Article |
| id | doaj-art-80af828783e5478b9624c3585dac5431 |
| institution | Kabale University |
| issn | 2757-5195 |
| language | English |
| publishDate | 2021-12-01 |
| publisher | Çanakkale Onsekiz Mart University |
| record_format | Article |
| series | Journal of Advanced Research in Natural and Applied Sciences |
| spelling | doaj-art-80af828783e5478b9624c3585dac54312025-02-05T17:58:10ZengÇanakkale Onsekiz Mart UniversityJournal of Advanced Research in Natural and Applied Sciences2757-51952021-12-017451252610.28979/jarnas.927842453Late Cenozoic Stress State in Gulf of Güllük and Surroundings, SW AnatoliaErdem Gündoğdu0https://orcid.org/0000-0002-6836-2951Suha Ozden1https://orcid.org/0000-0001-6321-0812Alper Demirci2https://orcid.org/0000-0002-8710-6232CANAKKALE ONSEKIZ MART UNIVERSITY, ÇAN VOCATIONAL SCHOOLÇANAKKALE ONSEKİZ MART ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ, JEOLOJİ MÜHENDİSLİĞİ BÖLÜMÜ, GENEL JEOLOJİ ANABİLİM DALIÇANAKKALE ONSEKİZ MART ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ, JEOFİZİK MÜHENDİSLİĞİ BÖLÜMÜ, SİSMOLOJİ ANABİLİM DALIThis study was performed with the aim of revealing the Late Cenozoic stress state of the Gulf of Güllük and close surroundings. In this study, the tectonic regime and stress states from the Pliocene to the present day were determined. Mesoscopic fault plane data were collected from outcrops at 19 different stations in the region between the Gulf of Güllük and Milas. Additionally, focal mechanism inverse solutions were calculated for 12 earthquakes larger than M:3.0 occurring from 2004 to 2015 to reveal the current tectonic regime. According to kinematic analysis results from fault assemblages and focal mechanism solutions for earthquakes, two tectonic regimes affected the region before the Pliocene and at present. In the first tectonic regime, strike-slip faulting developed under a NW-SE oriented compressional regime. There was an R ratio of 0.426 between the principal stress axes and this shows faulting had transtensional character. The region converted to a NE-SW oriented extensional regime dominated by normal faulting in the Quaternary. This currently effective extensional regime was understood from focal mechanism solutions of earthquakes developing in the region. The reason for this regime being effective is the rapid pull by the African plate on the Anatolian plate, which rides above the African plate, and horizontal extension in the Anatolian plate.https://dergipark.org.tr/en/download/article-file/1733211earthquakefocal mechanismgulf of güllükkinematic analysissw anatolia |
| spellingShingle | Erdem Gündoğdu Suha Ozden Alper Demirci Late Cenozoic Stress State in Gulf of Güllük and Surroundings, SW Anatolia Journal of Advanced Research in Natural and Applied Sciences earthquake focal mechanism gulf of güllük kinematic analysis sw anatolia |
| title | Late Cenozoic Stress State in Gulf of Güllük and Surroundings, SW Anatolia |
| title_full | Late Cenozoic Stress State in Gulf of Güllük and Surroundings, SW Anatolia |
| title_fullStr | Late Cenozoic Stress State in Gulf of Güllük and Surroundings, SW Anatolia |
| title_full_unstemmed | Late Cenozoic Stress State in Gulf of Güllük and Surroundings, SW Anatolia |
| title_short | Late Cenozoic Stress State in Gulf of Güllük and Surroundings, SW Anatolia |
| title_sort | late cenozoic stress state in gulf of gulluk and surroundings sw anatolia |
| topic | earthquake focal mechanism gulf of güllük kinematic analysis sw anatolia |
| url | https://dergipark.org.tr/en/download/article-file/1733211 |
| work_keys_str_mv | AT erdemgundogdu latecenozoicstressstateingulfofgullukandsurroundingsswanatolia AT suhaozden latecenozoicstressstateingulfofgullukandsurroundingsswanatolia AT alperdemirci latecenozoicstressstateingulfofgullukandsurroundingsswanatolia |