28 March 1970 Gediz earthquake fault, western Turkey: palaeoseismology and tectonic significance


Gurboga S.

INTERNATIONAL GEOLOGY REVIEW, cilt.55, sa.10, ss.1191-1201, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 55 Sayı: 10
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1080/00206814.2013.771420
  • Dergi Adı: INTERNATIONAL GEOLOGY REVIEW
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1191-1201
  • Anahtar Kelimeler: Gediz earthquake, Erdomu fault, palaeoseismology, western Turkey, C-14 dating method, PALEOSEISMOLOGY, GRABEN, MODEL
  • Akdeniz Üniversitesi Adresli: Evet

Özet

On 28 March 1970, an unexpected and destructive earthquake (Ms=7.2) originated along the Erdomu fault (EF), which forms the southern margin of the modern Erdomu-Yenigediz graben in the central part of the Akehir-Simav fault system. The EF is a N-dipping normal fault, approximate to 12 km long, generally E-W-trending, and characterized by a minor right-lateral strike-slip component. To determine its past activity, a palaeoseismological exploratory trenching study was conducted. Two trenches (EFT-1 and EFT-2) were excavated on the ground surface rupture of the 1970 Gediz earthquake near Erdomu village. Based on the relative displacement between units observed and mapped in EFT-1, at least three events were identified. Two events were also identified in EFT-2. Only one of the events in EFT-1 can be dated via C-14. The estimated recurrence interval on the EF is approximate to 910 +/- 40 years.