The karangatian epoch (mis 5e) in the Black Sea basin
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Дата
2016
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E-ISSN
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Анотація
Black Sea Quaternary history shows an alternation of transgressive and regressive stages that are related to global climate change; they appear pronounced due to semi-isolation from the
World Ocean. In warm periods, the Black Sea was connected to the Mediterranean Sea (i.e., World Ocean) via connecting seas and straits. In cold periods, it became isolater or connected to the Caspian Sea via the Manych outlet. During transgressions, sea level rose as did salinity. During regressions, when it dropped below the Bosphorus sill, the basin was transformed into an isolated lake. During transgressions, organisms migrated into the Black Sea from either the Mediterranean or Caspian. Such migrations affected assemblage structure and increased the number of species, especially in the case of Mediterranean transgressions. During regressive
stages, the number of species dropped, and only some holeuryhaline Mediterranean species could survive the lowering of salinity (Yanko-Hombach, 2007).
Опис
Ключові слова
Mediterranean transgression, MIS 5e, foraminifera
Бібліографічний опис
“From the Caspian to Mediterranean: environmental change and human response during the quaternary” (2013 - 2017): international geoscience programe: proceedings of the fourth plenary conference, 2-9 October. – Tbilisi, 2016.