Academic Journal
The age of the karangatian (late pleistocene) transgression of the black sea
| العنوان: | The age of the karangatian (late pleistocene) transgression of the black sea |
|---|---|
| المؤلفون: | Kurbanov, R. N., Yanina, T. A., Murray, A. S., Semikolennykh, D. V., Svistunov, M. I., Shtyrkova, E. I. |
| المصدر: | Kurbanov , R N , Yanina , T A , Murray , A S , Semikolennykh , D V , Svistunov , M I & Shtyrkova , E I 2019 , ' The age of the karangatian (late pleistocene) transgression of the black sea ' , Vestnik Moskovskogo Universiteta, Seriya 5: Geografiya , vol. 2019 , no. 6 , pp. 29-40 . |
| سنة النشر: | 2019 |
| المجموعة: | Aarhus University: Research |
| مصطلحات موضوعية: | Black Sea, Eltigen section, Karangatian transgression, Late pleistocene, OSL dating, Paleogeography |
| الوصف: | The Karangatian transgression is a significant milestone in the Pleistocene history of the Black Sea. It was a large interglacial transgression reaching 6-7 m above the modem levei and the highest salinity during the Pleistocene. At present absolute age of the event is debatable and there is no consensus among the researchers. The paper presents new dating results obtained by the optically-stimulated luminescence (OSL) of the Karangatian deposits represented in the Eltigen stratotype section on the western coast of the Kerch Strait. The section is a favorable object for OSL dating method, since the deposits are represented mainly by aeolian (loess-like subaerial sediments) and coastal-marine sedimente, which are characterized by complete bleaching of quartz and feldspar grains. The chronology was obtained for both quartz and feldspar using three protocols (OSL, IR 50 , pIRIR 290 ,) for each sample, which allows for the conclusion of the reliability of resulting datings. Eight luminescence ages were obtained, six of them characterize the marine stage and two - continental stage of the territory evolution. The biostratigraphic analysis of mollusk fauna from marine sedimente represented in the section confirmed their attribution to the Karangatian transgression of the Black Sea. The studied section covers two phases of the Karangatian transgression. The early stage was in progress during 131-120 thousand years ago (MIS 5e). The sea levei rise was about 32 cm/ka and reached +3,6 m. The second phase of the transgression occurred 120-100 thousand years ago (MIS 5d-s). The rise of the sea levei was about 12,5 cm/ka. The maximal sea-level dated 105-100 thousand years (MIS 5c), reaching ~6,45 m. Taking into account the scale of neotectonic movements will allow a more accurate determination of the maximum sea levei rise. During the development of the Karangatian basin it was characterized by heterogeneous environmental conditions: from moderately saline (15-17‰) at the initial stages to marine (28-30‰) as the ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| الاتاحة: | https://pure.au.dk/portal/da/publications/the-age-of-the-karangatian-late-pleistocene-transgression-of-the-black-sea(cb07a6f1-d52a-47fd-8572-6ace31f38c95).html http://www.scopus.com/inward/record.url?scp=85097883093&partnerID=8YFLogxK |
| Rights: | info:eu-repo/semantics/restrictedAccess |
| رقم الانضمام: | edsbas.34C69A21 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |