North Marmara Trough architecture of basin infill, basement and faults, from PSDM reflection and OBS refraction seismics

Anne Bécel*, Mireille Laigle, Béatrice de Voogd, Alfred Hirn, Tuncay Taymaz, Seda Yolsal-Cevikbilen, H. Shimamura

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: ???type-name???Makalebilirkişi

46 Atıf (Scopus)

Özet

The reflection and refraction seismic data collected during the SEISMARMARA Leg 1 survey in the Sea of Marmara provide detailed imaging of sedimentary record and fault activity with deep penetration into its basement. First, a detailed analysis of pre-stack depth-migrated seismic lines crossing the Central Basin enable us to discuss the space and time relations of the large and smaller nested basins of the inner depression, as well as the diversity of style and rate of activity of motion at the diverse basin border faults.Second, forward modeling of OBS refraction arrival times reveals the effect of compaction on the sedimentary pile whereas its layering imaged by MCS as seismic reflectors rather recorded the tectonic evolution. Another major result of the refraction modeling is the identification of the crystalline basement. The latter is imaged about 1 or 2. km deeper than the base of the layered sedimentary sequence imaged on the coincident MCS profiles.This basement exhibits sharp topography across the Central High, the Kumburgaz Basin and the eastern tip of the Cinarcik-North Imrali Basin in an unexpected way with respect to the sea-bottom depressions. We furthermore imaged several large tilted basement blocks, which separate the deep basins as between the Cinarcik and Imrali basins. Despite the varying width of the NMT and the sizes of the tilted blocks, we propose that the imaged finite deformation results from a similar process of partitioning deformation over more than one or even two faults across the NMT that may have changed activity with time and space.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)1-14
Sayfa sayısı14
DergiTectonophysics
Hacim490
Basın numarası1-2
DOI'lar
Yayın durumuYayınlandı - Tem 2010

Finansman

The SEISMARMARA seismic experiment was operated as a joint integrated project between Turkish and French scientists, research institutions and universities, technical facilities and funding agencies, coordinated by TUBITAK in Turkey and INSU-CNRS in France. N/O Nadir and the seismic source and streamer operated by IFREMER/GENAVIR were allocated in the frame of French national facilities. The OBS provided and operated by ISV Hokkaïdo, Japan, as well as the land stations of the INSU refraction pool were funded by ACI CATNAT of the French Ministry of Education and Research , with additional support and personnel of these institutions and of Turkish ones coordinated by TUBITAK . R/V Sismik 1 of MTA was operated for TUBITAK.

FinansörlerFinansör numarası
Australian Carbon Innovation
Società Italiana di Virologia
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu
Ministère de l'Education Nationale, de l'Enseignement Superieur et de la Recherche

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