CHANGES IN THE VOLUME AND SALINITY OF LAKE KHUBSUGUL (MONGOLIA) IN RESPONSE TO GLOBAL CLIMATE CHANGES IN THE UPPER PLEISTOCENE AND THE HOLOCENE
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dc.contributor.author | Fedotov A.P. | |
dc.contributor.author | Chebykin E.P. | |
dc.contributor.author | Semenov M.Yu. | |
dc.contributor.author | Vorobyova S.S. | |
dc.contributor.author | Osipov E.Yu. | |
dc.contributor.author | Golobokova L.P. | |
dc.contributor.author | Pogodaeva T.V. | |
dc.contributor.author | Zheleznyakova T.O. | |
dc.contributor.author | Grachev M.A. | |
dc.contributor.author | Tomurhuu D. | |
dc.contributor.author | Oyunchimeg Ts. | |
dc.contributor.author | Narantsetseg Ts. | |
dc.contributor.author | Tomurtogoo O. | |
dc.contributor.author | Dolgikh P.T. | |
dc.contributor.author | Arsenyuk M.I. | |
dc.contributor.author | Batist M.De. | |
dc.date.accessioned | 2022-11-03T10:21:07Z | |
dc.date.available | 2022-11-03T10:21:07Z | |
dc.date.issued | 2004 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=13455862 | |
dc.identifier.citation | Palaeogeography, Palaeoclimatology, Palaeoecology, 2004, 209, 1-4, 245-257 | |
dc.identifier.issn | 0031-0182 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/39367 | |
dc.description.abstract | Two gravity cores (1.1 and 2.2 m long) of deep-water bottom sediments from Lake Khubsugul (Mongolia) were studied. The Holocene, biogenic silica and organic matter-rich part of the first core was subjected to AMS radiocarbon dating which placed the date of dramatic increase of pelagic diatoms (40 cm below sediment surface) at a calendar age of 11.5 cal ky BP. ICP-MS analysis of weak nitric acid extracts revealed that the upper Pleistocene, compared to the Holocene samples, were enriched in Ca, Cinorg, Sr, Mg and depleted of U, W, Sb, V and some other elements. Transition to the Holocene resulted in an increase of total diatoms from 0 to 108 g−1, of BiSi from 1% to 20%, of organic matter from 6%. The Bølling–Allerød–Younger Dryas–Holocene abrupt climate oscillations manifested themselves in oscillations of geochemical proxies. A remarkable oscillation also occurred at 22 cm (ca. 5.5 ky BP). The Pleistocene section of the second, longer core was enriched in carbonate CO2 (up to 10%) and water-extractable SO42− (up to 300 times greater than that in Holocene pore waters). All this evidence is in an accord with the earlier finding of drowned paleo-deltas at ca. 170 m below the modern lake surface of the lake [Dokl. Akad. Nauk 382 (2002) 261] and suggests that, due to low (ca. 110 mm) regional precipitation at the end of the Pleistocene, Lake Khubsugul was only 100 m deep, and that its volume was ca. 10 times less than today. | |
dc.subject | Holocene | |
dc.subject | Paleoclimate | |
dc.subject | Lake Khubsugul level change | |
dc.subject | LGM | |
dc.subject | Mongolia | |
dc.title | CHANGES IN THE VOLUME AND SALINITY OF LAKE KHUBSUGUL (MONGOLIA) IN RESPONSE TO GLOBAL CLIMATE CHANGES IN THE UPPER PLEISTOCENE AND THE HOLOCENE | |
dc.type | Статья | |
dc.subject.age | Cenozoic::Quaternary::Holocene | |
dc.subject.age | Кайнозой::Четвертичная::Голоцен | ru |
dc.subject.age | Cenozoic::Quaternary::Pleistocene | |
dc.subject.age | Кайнозой::Четвертичная::Плейстоцен | ru |
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