Heavy Minerals Characteristics of Sediments in Lianghucun Borehole and Their Responses to the Quaternary Tectonic Movement and Environmental Evolutions of the Dongtinghu Basin

• 责任者：Bai Daoyuan (Hunan Institute of Geological Survey ; Changsha 410011 ; China) ; Li Chang’an
• 刊名：Geological Review
• 出版年：2010
• 卷期：56(2)
• 关键词：第四纪 ; Quaternary ; 活动构造 ; active tectonics ; 古环境 ; paleoenvironment ; 重矿物 ; heavy minerals ; 洞庭湖盆地 ; Dongtinghu Basin
• 页码：p.246-260
• 图表：4 illus., 4 tables, 47 refs.
• 分类号：1400
• issnNo：ISSN0371-5736
• isbnNo：CN11-1952/P

The main body of Quaternary Dongtinghu Basin, northwestern Hunan Province, is composed of Anxiang sag, Chishan uplift and Yuanjiang sag from west to east. Based on the source and contents variations of diagnostic heavy minerals and combined with lithological and petrographic variations, and regional geologic and geographic backgrounds, the authors probed into the evolutions of the sedimentary environment and tectonic subsidence of the southern Dongting basin during Early and Middle Pleistocene. The studies show that there existed episodic faulted subsidences in the Dongtinghu Basin, and there existed three violent subsidences apart in early Early Pleistocene, last stage of Early Pleistocene and middle-late Middle Pleistocene.