کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8908021 1635339 2018 39 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Morphologic and seismic evidence of rapid submergence offshore Cide-Sinop in the southern Black Sea shelf
ترجمه فارسی عنوان
شواهد مورفولوژیک و لرزه ای سیل سینوپ در دریای سیاه دریای سیاه
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی
Multi-beam bathymetric and multi-channel seismic reflection data obtained offshore Cide-Sinop have revealed important records on the latest transgression of the Black Sea for the first time. A relatively large shelf plain within the narrow southern continental shelf characterized by a flat seafloor morphology at −100 water depth followed by a steep continental slope leading to −500 m depth. This area is widely covered by submerged morphological features such as dunes, lagoons, possible aeolianites, an eroded anticline and small channels that developed by aeolian and fluvial processes. These morphological features sit upon an erosional surface that truncates the top of all seismic units and constitutes the seafloor over the whole shelf. The recent prograded delta deposits around the shelf break are also truncated by the similar erosional surface. These results indicate that offshore Cide-Sinop was once a terrestrial landscape that was then submerged. The interpreted paleoshoreline varies from −100 to −120 m. This variation can be explained by not only sea level changes but also the active faults observed on the seismic section. The effective protection of morphological features on the seafloor is the evidence of abrupt submergence rather than gradual. In addition, the absence of coastal onlaps suggests that these morphological features should have developed at low sea level before the latest sea level rise in the Black Sea.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geomorphology - Volume 311, 15 June 2018, Pages 76-89
نویسندگان
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