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SPREADING OF CARBONATE ROCKS OF MONGOLIAN PLATEAU

We have used speleothems from six caves along a north-south transect in Eastern Siberia and the Mongolian Gobi Desert to track the evolution of permafrost and desert aridity during the last ∼500 ky. Meteoric waters can penetrate into caves and cause formation of speleothems only when cave temperature (which approximates the mean annual surface air temperature) is above 0˚C, and the effective precipitation during the humid season is positive. Periods of speleothem deposition therefore provide a tracer for presence or absence of the permafrost in Siberia, and of the arid conditions in the Gobi.

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Талбар Утга
Эх сурвалж Vol. 13, EGU2011-4124, 2011 EGU General Assembly
Зохиогч Anton Vaks, Oxana Gutareva, Sebastian Breitenbach, Erdenedalai Avirmed, Alexander Osinzev, Andrew Mason, Gideon Henderson
Арчлагч М.Пүрэвсүрэн
Сүүлийн шинэчлэл 2020 10-р сар 12, 05:11 (UTC)
Үүссэн 2020 10-р сар 12, 05:10 (UTC)