Baymouth barrier of Dniestrovsky liman (DLBB)
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Дата
2006
Науковий керівник
Укладач
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Назва тому
Видавець
Astroprint
Анотація
The baymouth barrier varies in width from 1 km, where it is attached to the east side of the mainland coast, to 70-100 m.A natural inlet,called Tsaregradsky Girlo,occurs in the western part of the barrier,where it acts as a connection between the liman and the sea.The surface of the barrier consists of sandy beach and dune deposits.The absolute elevation of the barrier ranges from 0.5 to 4.5 m. At present,its natural landscape is altered by extensive development.Numerous boreholes reveal deposits of Middle-Late Pleistocene and Holocene age (Fig. 29).The erosional downcutting of the Dniester River valley penetrated 74 m of Neogene deposits.
Thickness of the Middle-Late Pleistocene alluvium averages 20-30 m. The Late Pleistocene alluvium (Antsky horizon) corresponds to one of the stages of the Neoeuxinian regression.Based on radiocarbon dating,the age of the alluvium is 17,050 yrs BP (borehole #221).Higher on the outcrop, on the reworked surface of the Neoeuxinian alluvium (-20 to -30 m),lies
a layer of the transgressive series of the Neoeuxinian basin. It is 1-2 m thick and consists of organic liman clays with large amounts of plant fragments and peat horizons. The radiocarbon age of these deposits is 9,500 yrs BP.This point marks the beginning of the formation of the modern liman and the mouth of the Dniester River.
Опис
Друга пленарна конференція та польові екскурсії з Проекту IGCP-521 «Чорноморсько-Середземноморський Коридор упродовж останніх 30 тисяч років: мінливість рівня моря й адаптація людини» (2005-2009).Путівник.-Одеса:Астрапринт,2006
Ключові слова
Middle-Late Pleistocene and Holocene age, Dniester River
Бібліографічний опис
Black sea – mediterranean corridor during the last 30 ky: sea level change and human adaptation (2005–2009) : ІІ plenary meeting and field trip of project IGCP-521 (Odessa, 20–28 August 2006). – Odessa : Astroprint, 2006.