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	小江流域晚新生代地层的沉积相特征及其古环境意义
语种	中文
	李吉均1; 况明生2; 杜榕桓3
出处	泥石流观测与研究
	1996-06
页码	77-85
出版者	科学出版社
出版地	北京
关键词	云南小江流域 晚新生代地层 沉积相特征 古环境意义
交替题名	SEDIMENTARY FACIES CHARACTER AND PALEOENVIRONMENT MEANING OF LATE CENOZOIC GROUP IN THE XIAOJIANG RIVER BASIN
英文摘要	Processes of environment have been changed since quaternary in the Xiaojiang River Basin in the most southeast part of the Himalayan fault-blocks violently uplifting area, which is mainly meaning for us to bring to light the history of uplifting and environment changing of the Tibet plateau. This papter discusses the process of environment having been changed since the late Cenezoie era according to sedimentary facies character and comparative situationof time and space of late Cenozoie group. The Xiaojiang River Basin has been recognized that where fault lakes had been expanded , lacustrin secliments grew widespeadly and had entered the geological period of humid-hot climate and lake -swamps wideranging through the Yunnan Movement about 2.40 MaB. P.. After the Yuanmong Movement about 1. 60 MaB. P. the ground appeared intermissionally speedly having been uplift, lakes were pressed to contract, gullies grew and 6-7 steps of terraces had been formed. There took the Jinshajiang Movement about 1. 10MaB. P. to lead to gullies between lakes to link up gradually , and the Jinshajiang River system and its tributary , the Xiaojiang River, had been formed and the Xiaojiang River appeared speedly cutting down. Therefore, the Xiaojiang River Basin entered geological period of high mountain uplifting , valley culling down speedly and terraces being formed. The rhythm of the process of quaternary environment changing in the Xiaojiang River Basin was the same as that of environment of area above the Huanghe River in the northeast border district of Tibet Plateau , and the two acts of the Yunnan and the Yuanmong Movement about 2.40 and 1. 6MaB. P. were c1early B and C acts of Tibet epeirogenelic Movernent to exercise in the Xiaojiang River Basin.
ISBN号	7-03-005334-6
内容类型	专著章节文集论文
源URL	[http://ir.imde.ac.cn/handle/131551/27130]
专题	成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前）
作者单位	1.兰州大学地理科学系; 2.西南师范大学城镇与资源环境科学系; 3.中国科学院成都山地灾害与环境研究所
推荐引用方式 GB/T 7714	李吉均,况明生,杜榕桓. 小江流域晚新生代地层的沉积相特征及其古环境意义. 泥石流观测与研究. 北京:科学出版社,1996:77-85.

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