Universität zu Köln

Klinge, Michael, Schluetz, Frank, Zander, Anja, Huelle, Daniela, Batkhishig, Ochirbat and Lehmkuhl, Frank (2021). Late Pleistocene lake level, glaciation and climate change in the Mongolian Altai deduced from sedimentological and palynological archives. Quat. Res., 99. S. 168 - 190. NEW YORK: CAMBRIDGE UNIV PRESS. ISSN 1096-0287

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Abstract

Glacial and lacustrine sediments from the Mongolian Altai provide paleoclimatic information for the late Pleistocene in Mongolia, for which only a few sufficiently studied archives exist. Glacial stages referred to global cooling events are reported for the last glacial maximum (27-21 ka) and the late glacial period (18-16 ka). Sedimentary archives from the first part of the last glacial period are infrequent. We present proxy data for this period from two different archives (88-63 and 57-30 ka). Due to the limitation of effective moisture, an increase of precipitation is discussed as one trigger for glacier development in the cold-arid regions of central Asia. Our pollen analysis from periods of high paleolake levels in small catchments indicate that the vegetation was sparse and of dry desert type between 42-29 and 17-11 ka. This apparent contradiction between high lake levels and dry landscape conditions, the latter supported by intensified eolian processes, points to lower temperatures and cooler conditions causing reduced evaporation to be the main trigger for the high lake levels during glacier advances. Rising temperatures that cause melting of glacier and permafrost ice and geomorphological processes play a role in paleolake conditions. Interpreting lake-level changes as regional or global paleoclimate signals requires detailed investigation of geomorphological settings and mountain-basin relationships.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Klinge, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Schluetz, Frank UNSPECIFIED UNSPECIFIED UNSPECIFIED Zander, Anja UNSPECIFIED UNSPECIFIED UNSPECIFIED Huelle, Daniela UNSPECIFIED UNSPECIFIED UNSPECIFIED Batkhishig, Ochirbat UNSPECIFIED UNSPECIFIED UNSPECIFIED Lehmkuhl, Frank UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-588377
DOI:	10.1017/qua.2020.67
Journal or Publication Title:	Quat. Res.
Volume:	99
Page Range:	S. 168 - 190
Date:	2021
Publisher:	CAMBRIDGE UNIV PRESS
Place of Publication:	NEW YORK
ISSN:	1096-0287
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language NORTH CENTRAL MONGOLIA; HOLOCENE CLIMATE; ENVIRONMENTAL-CHANGES; KHENTEY MOUNTAINS; WESTERN MONGOLIA; SURFACE EXPOSURE; TURGEN MOUNTAINS; CENTRAL-ASIA; GOBI DESERT; NUUR BASIN Multiple languages Geography, Physical; Geosciences, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/58837