Holocene seismic activity of the Priene-Sazli Fault revealed by cosmogenic Cl-36, Western Anatolia, Turkey

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Atıf İçin Kopyala

Mozafari N., SÜMER Ö., Tikhomirov D., Ivy-Ochs S., Alfimov V., Vockenhuber C., ...Daha Fazla

TURKISH JOURNAL OF EARTH SCIENCES, cilt.28, sa.3, ss.410-445, 2019 (SCI-Expanded)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 28 Sayı: 3
• Basım Tarihi: 2019
• Doi Numarası: 10.3906/yer-1810-6
• Dergi Adı: TURKISH JOURNAL OF EARTH SCIENCES
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
• Sayfa Sayıları: ss.410-445
• Anahtar Kelimeler: Fault scarp, Cl-36 dating, Western Anatolia, active fault, horst-graben, BUYUK MENDERES GRABEN, SLIP HISTORY, CENTRAL APENNINES, PAST EARTHQUAKES, PRODUCTION-RATES, BASIN FORMATION, ZONE EVIDENCE, EXTENSION, TECTONICS, DISPLACEMENT
• Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Fault scarps in carbonates are structures well suited to Cl-36 analysis of paleoearthquakes to reconstruct the seismic history using cosmogenic Cl-36. In this study, we measured cosmogenic Cl-36 concentrations in 117 samples along one of the active faults in Western Anatolia, the Priene-Sazli Fault scarp, to reconstruct the age of paleoearthquakes along with their slip amounts, beyond the available historical and instrumental archives. Our results indicate four periods of high seismic activity on the Priene-Sazli Fault since the early Holocene at 8.1 +/- 2.0, 6.0 +/- 1.5, 3.7 +/- 0.9, and 2.2 +/- 0.5 ka, with slips of 3.4 +/- 0.5,1.5 +/- 0.2,1.4 +/- 0.2, and 1.5 +/- 0.2 m, respectively. These ruptures mostly occurred as clusters of earthquakes with magnitudes of up to 6.7-7.0 during the Holocene. Estimated slip rates on the fault are greater than 0.3, 0.7, 0.6, and 1.0 mm/year from the oldest to the youngest modeled earthquakes. In addition, the long-term slip rate is 0.7 mm/year. This means that the Priene-Sazh fault can be considered as a low to moderately seismogenic fault, based upon the recurrence interval.