Abstract
A mid to late Holocene exposure in a recently desiccated lake basin in western Inner Mongolia was investigated with regard to palaeoenvironmental changes and the overall climatic conditions in NW China between 2.7 and 5.4 cal. ka BP. High lake levels of Lake Eastern Juyanze were recorded by ostracod assemblages, shell geochemistry and sedimentology between 5.1 and 4.1 cal. ka BP. Relatively humid conditions and a relatively strong influence of the Asian monsoon are indicated by palynological data for the corresponding period. Lake levels decreased afterwards and short-term regressive events occurred at about 4.1, 3.8 and 3.4 cal. ka BP. The overall trend towards lower lake levels culminated in repeated episodes of desiccation of Lake Eastern Juyanze between 3.2 and 2.9 cal. ka BP, in phase with very arid conditions inferred from the palynological record. Individual regressive events as well as the rapid environmental fluctuations of Lake Eastern Juyanze at about 3.0 cal. ka BP were regarded as driven by mid to late Holocene summer monsoon fluctuations, supported by the Dunde ice core record.
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References
Yao, T. D., Thompson, L. G., Trends and features of climatic changes in the past 5000 years recorded by the Dunde ice core, Annals of Glaciology, 1992, 16: 21–24.
Gasse, F., Fontes, J. C., Van Campo, E. et al., Holocene environmental changes in Lake Bangong basin (Western Tibet), Part 4: Discussion and conclusion, Palaeogeography, Palaeoclimatology, Palaeoecology, 1996, 120: 79–92.
Kashiwaya, K., Yaskawa, K., Yuan, B. Y. et al., Paleohydrological processes in Siling-Co (Lake) in the Qing-Zang (Tibetan) Plateau based on the physical properties of its bottom sediments, Geophysical Research Letters, 1991, 18: 1779–1781.
Lister, G. S., Kelts, K., Chen, K. Z. et al., Qinghai, China: Closed-basin lake levels and the oxygen isotope record for ostracoda since the latest Pleistocene, Palaeogeography, Palaeoclimatology, Palaeoecology, 1991, 84: 141–162.
Liu, K. B., Yao, Z. J., Thompson, L., A pollen record of Holocene climatic changes from the Dunde ice cap, Qinghai-Tibetan Plateau, Geology, 1998, 26: 135–138.
Van Campo, E., Gasse, F., Pollenand diatom-inferred climatic and hydrological changes in Sumxi Co basin (Western Tibet) since 13000 a B.P., Quaternary Research, 1993, 39: 300–313.
Rhodes, T. E., Gasse, F., Lin, R. F., et al., A Late PleistoceneHolocene lacustrine record from Lake Manas, Zunggar (northern Xinjiang, western China), Palaeogeography, Palaeoclimatology, Palaeoecology, 1996, 120: 105–121.
Chen Fahu, Shi Qi, Wang Jianmin, Environmental changes documented by sedimentation of Lake Yiema in arid China since the Late Glaciation, Journal of Paleolimnology, 1999, 22: 159–169.
Zhang Hucai, Ma Yuzhen, Wünnemann, B. et al., A Holocene climatic record from arid northwestern China, Palaeogeography, Palaeoclimatology, Palaeoecology, 2000, 162: 389–401.
Demske, D., Mischke, S., Palynological investigation of a Holocene profile section from the Palaeo-Gaxun-Nur-Basin, Chinese Science Bulletin, 2003, 48(14): 1418–1422.
Smith, A. J., Lacustrine ostracodes as hydrochemical indicators in lakes of the north-central United States, Journal of Paleolimnology, 1993, 8: 121–134.
Chivas, A. R., De Deckker, P., Shelley, J. M. G., Magnesium content of non-marine ostracod shells: A new palaeosalinometer and palaeothermometer, Palaeogeography, Palaeoclimatology, Palaeoecology, 1986, 54: 43–61.
De Deckker, P., Forester, R. M., The use of ostracods to reconstruct continental palaeoenvironmental records (eds De Deckker, P., Colin, J. P., Peypouquet, J. P.), Ostracoda in the Earth Sciences, Amsterdam: Elsevier, 1988, 175–199.
Holmes, J. A., Trace-element and stable-isotope geochemistry of non-marine ostracod shells in Quaternary palaeoenvironmental reconstruction, Journal of Paleolimnology, 1996, 15: 223–235.
Sun Zhencheng, Feng Xiaojie, Li Dongming et al., Cenozoic Ostracoda and palaeoenvironments of the northeastern Tarim Basin, western China, Palaeogeography, Palaeoclimatology, Palaeoecology, 1999, 148: 37–50.
Yang Fan, Sun Zhencheng, Ma Zhiqiang et al., Quaternary ostracode zones and magnetotratigraphic profiles in the Qaidam Basin, Acta Micropalaeontologica Sinica, 1997, 14: 378–390.
Mischke, S., Schudack, M. E., Sub-recent Ostracoda from Bosten Lake, NW China, Journal of Micropalaeontology, 2001, 20: 12.
Wünnemann, B., Pachur, H. J., Li Jijun, et al., Chronologie der pleistozänen und holozänen Seespiegelschwankungen des Gaxun Nur/Sogo Nur und Baijian Hu, Innere Mongolei, Nordwestchina, Petermanns Geographische Mitteilungen, 1998, 142: 191–206.
Mischke, S., Mid and Late Holocene palaeoenvironment of the lakes Eastern Juyanze and Sogo Nur in NW China, based on ostracod species assemblages and shell chemistry, Berliner Geowissenschaftliche Abhandlungen, Reihe E, 2001, 35: 131.
De Deckker, P., An account of the techniques using ostracodes in palaeolimnology in Australia, Palaeogeography, Palaeoclimatology, Palaeoecology, 1988, 62: 463–475.
Meisch, C., Freshwater Ostracoda of Western and Central Europe, Heidelberg/Berlin: Spektrum Gustav Fischer, 2000, 522.
Liu Hongyan, Cui Haiting, Pott, R. et al., The surface pollen of the woodland-steppe ecotone in southeastern Inner Mongolia, China, Review of Palaeobotany & Palynology, 1999, 105: 237–250.
Engstrom, D. R., Nelson, S. R., Paleosalinity from trace metals in fossil ostracodes compared with observational records at Devils Lake, North Dakota, USA, Palaeogeography, Palaeoclimatology, Palaeoecology, 1991, 83: 295–312.
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Mischke, S., Demske, D. & Schudack, M.E. Hydrologic and climatic implications of a multidisciplinary study of the mid to late Holocene Lake Eastern Juyanze. Chin.Sci.Bull. 48, 1411–1417 (2003). https://doi.org/10.1360/02wd0258
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DOI: https://doi.org/10.1360/02wd0258