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GEOREF RECORD

Rapid subsidence and sedimentation from oblique slip near a bend on the North Anatolian transform fault in the Marmara Sea, Turkey

Leonardo Seeber, Marie-Helene Cormier, Cecilia McHugh, Omer Emre, Alina Polonia and Christopher Sorlien
Rapid subsidence and sedimentation from oblique slip near a bend on the North Anatolian transform fault in the Marmara Sea, Turkey
Geology (Boulder) (November 2006) 34 (11): 933-936

Abstract

Several basins are developing near bends on strands of the North Anatolian transform fault in northwest Turkey. Oblique slip on these faults, rather than strain partitioning, accounts for trans tension and subsidence. These basins are asymmetric, and tilt and subside most rapidly at their narrow ends near the bends. The turbidite surface marking the floor of the Cinarcik Basin (eastern Marmara Sea) was mostly abandoned at a sudden drop in sedimentation, which was likely coincident with the 14 ka lake-sea transition, and is now a warped reference surface from which we can measure strain and sedimentation. Subsidence and tilt are rapid, but do not require late Quaternary changes in regime. They are linked to transcurrent motion by slip parallel to an oblique bend on the North Anatolian fault and suggest tsunamogenic vertical motion in large Marmara Sea earthquakes.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 34
Serial Issue: 11
Title: Rapid subsidence and sedimentation from oblique slip near a bend on the North Anatolian transform fault in the Marmara Sea, Turkey
Affiliation: City University of New York, Queens College, Flushing, NY, United States
Pages: 933-936
Published: 200611
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 26
Accession Number: 2006-091335
Categories: Quaternary geologyStructural geology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Lamont-Doherty Earth Observatory, Contrib. No. 6913
Illustration Description: illus. incl. block diag., sects., sketch maps
N40°00'00" - N42°00'00", E26°00'00" - E32°00'00"
Secondary Affiliation: General Directorate of Mineral Research and Exploration (MTA), Ankara, TUR, TurkeyCNR Istituto Geologia Marina, Via Gobetti 101, ITA, ItalyUniversity of California at Santa Barbara, Santa Barbara, California 93106, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 200651
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