Deep Earthquakes beneath the Northern Caucasus: Evidence of Active or Recent Subduction in Western Asia

Mellors, R. J. and Jackson, J. and Myers, S. and Gok, R. and Priestley, K. and Yetirmishli, G. (2012) Deep Earthquakes beneath the Northern Caucasus: Evidence of Active or Recent Subduction in Western Asia. Bulletin of the Seismological Society of America, 102 (2). pp. 862-866. DOI 10.1785/0120110184

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Abstract

An intermediate-depth earthquake is confirmed at a depth of 158 4 km under the northern foothills of the Greater Caucasus. Separate methods were used to confirm the depth: data from local and regional networks, teleseismic depth phases, and examination of waveforms. Additional examination of global catalogs suggests the presence of a (perhaps remnant) northeast-dipping subduction zone under the Greater Caucasus. The most likely explanation appears to be subduction of oceanic crust with the interface at the northern edge of the Kura Basin. Events at depths of 30 – 50 km in the Kura Basin may be related to underthrusting by the South Caspian basin rather than subduction in the Greater Caucasus.

Item Type: Article
Additional Information: Erratum: http://publications.esc.cam.ac.uk:8080/2539/
Uncontrolled Keywords: 2012AREP; IA63;
Subjects: 02 - Geodynamics, Geophysics and Tectonics
Divisions: 02 - Geodynamics, Geophysics and Tectonics
Journal or Publication Title: Bulletin of the Seismological Society of America
Volume: 102
Page Range: pp. 862-866
Identification Number: 10.1785/0120110184
Depositing User: Sarah Humbert
Date Deposited: 23 Mar 2012 15:13
Last Modified: 23 Jul 2013 10:03
URI: http://eprints.esc.cam.ac.uk/id/eprint/2418

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