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dc.contributor.author Li en_US
dc.contributor.author David J. en_US
dc.contributor.author Zhang en_US
dc.date.accessioned 2011-06-27T08:43:10Z
dc.date.available 2011-06-27T08:43:10Z
dc.date.issued 2008-07-31 en_US
dc.identifier http://dx.doi.org/10.1016/j.palaeo.2008.04.017 en_US
dc.identifier.citation Jianguo , L , Batten , D J & Yiyong , Z 2008 , ' Palynological indications of environmental changes during the Late Creataceous-Eocene on the southern continental margin of Laurasia, Xizang (Tibet) ' Palaeogeography, Palaeoclimatology, Palaeoecology , vol 265 , no. 1-2 , pp. 78-86 . , 10.1016/j.palaeo.2008.04.017 en_US
dc.identifier.other PURE: 168193 en_US
dc.identifier.other dspace: 2160/7100 en_US
dc.identifier.uri http://hdl.handle.net/2160/7100
dc.description.abstract A palynostratigraphic and palynofacies study of a geological section at Cuojiangding in Zhongba Conty has provided a basis for discussing the palaeoenvironmental evolution of the southern continentla margin of Laurasia in Xizang (Tibet) towards the end of the Creataceous Period and during the Paleogene. It is the only record of fossil spores and pollen grains from collision- and convergence-related sediments close to the major Yarlung Zangbo Suture. Deposits of the Padana Formation at the base of the section through the Qubeiya, Quxia, and Jialazi formations to the Rujiao Zangbo Conglomerate at the top are considered to range in age from Santonian to Eocene or possibly Oligocene. During this period the India plate collided with, and continued to push against, Laurasia plate. Two spore and pollen zones and three palynofacies types are recognized. These are correlated with two transgressive-regrassive cycles associated with the collision, periods of geologically rapid uplift being reflected by the molasse-like sediments of the upper Quxia Formation and the Rujiao Zangbo Conglomerate, which accumulated during the Late Paleocene and Eocene-Oligocene respectively. The first regression led to intermittent subaerial exposure and erosion of the Cuojiangding area. The second ended the marine history of the area and led first to the development of swamps in a subtropical climate, now preserved in the coal-bearing Qiuwu Formation, and later to the development of mountainous terrain, with a cooler climate at higher elevations. (C) 2008 Elsevier B.V. All rights reserved. en_US
dc.format.extent 9 en_US
dc.relation.ispartof Palaeogeography, Palaeoclimatology, Palaeoecology en_US
dc.subject Yarlung Zangbo Suture en_US
dc.subject Inida-Laurasia collision en_US
dc.subject Cretaceous-Palaeogene en_US
dc.subject Palynology en_US
dc.subject Palaeoenvironment en_US
dc.title Palynological indications of environmental changes during the Late Creataceous-Eocene on the southern continental margin of Laurasia, Xizang (Tibet) en_US
dc.contributor.pbl River Basin Dynamics and Hydrology en_US


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