干旱区生态环境知识资源中心(Arid): 赣西北修水、武宁地区中新生代红盆地质时代和沉积相研究

Arid

	赣西北修水、武宁地区中新生代红盆地质时代和沉积相研究
其他题名	Geological times and sedimentary facies of the Mesozoic and Cenozoic "red basins" in the Xiushui and Wuning regions, northwestern Jiangxi
	张雄华; 章泽军
来源期刊	沉积与特提斯地质
ISSN	1009-3850
出版年	2003
卷号	23 期号:4 页码:50-55
中文摘要	通过新发现的古生物资料分析，确定了赣西北修水、武宁地区的武宁、三都及马坳盆地的地层时代。对3个盆地的沉积相进行了详细的划分和描述，查明其为冲积扇沉积类型划分出22个岩相，归属于泥石流、泥流、颗粒流、水道（包括主水道和分枝水道2个次级类型片流、筛积和洪泛7个沉积类型重力流沉积分布在扇根或主要沉积旋回的底部，其类型的判别与邻近物源区的岩性有关；分枝水道、片流及筛积主要分布在扇中，交错层理及砾石叠瓦状构造发育，主要呈现牵引流特征；扇缘主要为洪泛沉积夹少量决口扇成因的砂砾岩透镜体，钙结壳发育，反映了一种干旱强蒸发的古气候环境。
英文摘要	The stratigraphic ages have been determinated on the basis of the new palaeontological data for the Wuning, Sandu and Ma’ao Basins in the Xiushui and Wuning regions in northwestern Jiangxi. Twenty-two lithofacies assigned to seven sedimentary types have also been distinguished, including debris flow deposits, mud flow deposits, grain flow deposits, stream-channel (including main channel and distributary channel) deposits, sheet flow deposits, sieve deposits and flood-plain deposits in the basins outlined above. The gravity-flow deposits appear in the proximal fan and/or at the base of major depositional cycles. The differences of their sedimentary types may be caused by the variations in lithology iri the contiguous’ provenances. The distributary channel deposits, sheet flow deposits and sieve deposits are.concentrated’ in the mid-fan, where the cross-beddings, brecciated structures and tractional current marks are extremely conspicuous. The fan fringes are occupied by the flood-plain deposits intercalated with minor amount of sandstone and conglomerate lenses of the crevasse-splay origin. The widespread caliche indicates a highly arid palaeoclimate.
中文关键词	中新生代 ; 红盆 ; 地质时代 ; 沉积相 ; 赣西北
英文关键词	Mesozoic and Cenozoic "red basins" geological times sedimentary facies northwestern Jiangxi
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOLOGY
WOS研究方向	Geology
CSCD记录号	CSCD:1215959
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/203874
作者单位	中国地质大学(武汉), 武汉, 湖北 430074, 中国
推荐引用方式 GB/T 7714	张雄华,章泽军. 赣西北修水、武宁地区中新生代红盆地质时代和沉积相研究[J],2003,23(4):50-55.
APA	张雄华,&章泽军.(2003).赣西北修水、武宁地区中新生代红盆地质时代和沉积相研究.沉积与特提斯地质,23(4),50-55.
MLA	张雄华,et al."赣西北修水、武宁地区中新生代红盆地质时代和沉积相研究".沉积与特提斯地质 23.4(2003):50-55.