High-resolution seismic profiling in the Sea of Marmara (northwest Turkey): Late Quaternary sedimentation and sea-level changes

Abstract

Research Article| August 01, 1995 High-resolution seismic profiling in the Sea of Marmara (northwest Turkey): Late Quaternary sedimentation and sea-level changes A. D. Smith; A. D. Smith 1Bullard Laboratories, Madingley Rise, Cambridge, CB3 OEZ, England Search for other works by this author on: GSW Google Scholar T. Taymaz; T. Taymaz 2I.T.Ü. Maden Fakültesi, Jeofizik Müh. Bölümü, 80626-Maslak, Istanbul, Turkey Search for other works by this author on: GSW Google Scholar F. Oktay; F. Oktay 2I.T.Ü. Maden Fakültesi, Jeofizik Müh. Bölümü, 80626-Maslak, Istanbul, Turkey Search for other works by this author on: GSW Google Scholar H. Yüce; H. Yüce 3Hydrographic Service, Turkish Navy Search for other works by this author on: GSW Google Scholar B. Alpar; B. Alpar 3Hydrographic Service, Turkish Navy Search for other works by this author on: GSW Google Scholar H. Başaran; H. Başaran 3Hydrographic Service, Turkish Navy Search for other works by this author on: GSW Google Scholar J. A. Jackson; J. A. Jackson 1Bullard Laboratories, Madingley Rise, Cambridge, CB3 OEZ, England Search for other works by this author on: GSW Google Scholar S. Kara; S. Kara 3Hydrographic Service, Turkish Navy Search for other works by this author on: GSW Google Scholar M. Şimşek M. Şimşek 3Hydrographic Service, Turkish Navy Search for other works by this author on: GSW Google Scholar Author and Article Information A. D. Smith 1Bullard Laboratories, Madingley Rise, Cambridge, CB3 OEZ, England T. Taymaz 2I.T.Ü. Maden Fakültesi, Jeofizik Müh. Bölümü, 80626-Maslak, Istanbul, Turkey F. Oktay 2I.T.Ü. Maden Fakültesi, Jeofizik Müh. Bölümü, 80626-Maslak, Istanbul, Turkey H. Yüce 3Hydrographic Service, Turkish Navy B. Alpar 3Hydrographic Service, Turkish Navy H. Başaran 3Hydrographic Service, Turkish Navy J. A. Jackson 1Bullard Laboratories, Madingley Rise, Cambridge, CB3 OEZ, England S. Kara 3Hydrographic Service, Turkish Navy M. Şimşek 3Hydrographic Service, Turkish Navy Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1995) 107 (8): 923–936. https://doi.org/10.1130/0016-7606(1995)107<0923:HRSPIT>2.3.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation A. D. Smith, T. Taymaz, F. Oktay, H. Yüce, B. Alpar, H. Başaran, J. A. Jackson, S. Kara, M. Şimşek; High-resolution seismic profiling in the Sea of Marmara (northwest Turkey): Late Quaternary sedimentation and sea-level changes. GSA Bulletin 1995;; 107 (8): 923–936. doi: https://doi.org/10.1130/0016-7606(1995)107<0923:HRSPIT>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract High-resolution sparker seismic profiling was carried out in the Sea of Marmara (northwest Turkey) to study the late Quaternary tectonics and sedimentation of this important active basin at the western end of the North Anatolian fault zone. A sedimentary unit interpreted as the clinoforms of a prograding delta was observed in places along the outer part of the southern shelf. The topset-foreset transitions of the latest clinoforms cluster around 100 m below present sea level; they were probably deposited during the last glacial maximum and early phase of deglaciation, between 25 and 13 k.y. B.P., when the level of the Aegean was below that of the Dardanelles sill (60–70 m below sea level at present). Therefore, the Sea of Marmara was isolated from the Aegean during the last glacial maximum, but it is possible that a fluvial overflow existed across the Dardanelles during this time, stabilizing the level of the "Marmara Lake" and allowing the delta progradation. Rivers that drain into the Sea of Marmara from the south have a much greater combined drainage basin area and sediment flux than those draining the region to the north. This may explain the much broader shelf to the south: half graben bounded by north-dipping normal faults observed within the southern shelf would tend to trap sediment sourced from the south and subdue any sea-bed morphology on the shelf. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.