Constructing a 3D structural block diagram of the Central Basin in Marmara Sea by means of bathymetric and seismic data |
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Authors: | Emin Demirba? Hülya Kurt Do?a Dü?ünür Kerim Sar?kavak Suna Çetin |
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Affiliation: | 1.Jeofizik Mühendisli?i B?lümü, Maden Fakültesi,?stanbul Teknik üniversitesi,Istanbul,Turkey;2.Mineral Research and Exploration Directorate,Ankara,Turkey;3.Turkish Scientific and Technological Research Council - Marmara Research Center,Kocaeli,Turkey |
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Abstract: | In this study we made a comparative interpretation of multibeam bathymetric and seismic reflection data with different resolutions
and penetration properties collected in the Central Basin of the Marmara Sea. Our main objectives were (i) to investigate
and compare the active tectonic deformation observed on the sea bottom and within the uppermost sedimentary layers to that
of the deep-seated deformation within the limits of resolution and penetration of the available geophysical data and (ii)
to build a three-dimensional (3D) block diagram of the active tectonic and buried features by means of a sliced mapping technique. In this approach, we produced slice maps of the active and buried structural features at selected depths and then combined
them to form a 3D structural block diagram. Motivation for our work was to produce a 3D structural diagram to derive a more
detailed image of the structural features in the Central Basin where there is no available 3D seismic data. The observations
from the bathymetry and seismic data and developed 3D diagram support the presence of a through-going strike-slip fault that
forms a rotational depression zone against a right-stepping strike-slip faulting causing a pull-apart basin in the Central
Depression zone. |
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Keywords: | Marmara Sea Central Basin Active tectonism Seismic reflection Multibeam bathymetry |
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