干旱区生态环境知识资源中心(Arid): 晚新生代中国北方风尘沉积的可能物源及变化

Arid

	晚新生代中国北方风尘沉积的可能物源及变化
其他题名	Possible provenances and their change of aeolian deposits in north China in late Cenozoic
	唐自华; 穆桂金
ISSN	1000-6060
出版年	2006
卷号	29 期号:1 页码:101-108
中文摘要	中国北方风尘沉积是晚新生代中纬西风和冬季风输送的粉尘相互加积的结果。对北方风尘沉积物来源和搬运动力的分析表明，风尘沉积的物质来源具有多样性。物源类型和分布、传输路径随时间变化。认为亚洲中部山地古风化壳可能是中国北方早期风尘沉积，尤其是第三纪红粘士的重要物源之一；晚新生代的粉尘源区类型由山地因干旱化被风蚀的红色风化壳逐渐向盆地周边被抬升的中、新生代砂泥岩过渡，再由盆地周边过渡到盆地内部的中生代与新生代的河湖沉积物和沙漠。同时大气环流格局的变化相应地导致了粉尘源区分布和传输路径的迁移。
英文摘要	Many studies have proved that aeolian deposits transported by both westerly air current and winter monsoon are lots of uncertainties in the sand-dust source areas. The in north China since the late Cenozoic are jointly in East Asia in the Northern Hemisphere, but there analyzed results of the provenances and transport processes of aeolian deposits reveal that the sand-dust sources are various, and the dust transport paths, types and spatial distribution vary with the time. it is considered that the paleo-weathering crust in the mountainous regions in Central Asia is possibly an important source of aeolian deposits, especially is one of the important sources of Cenozoic red clay. Because of aridification, the late-Cenozoic sand-dust source areas shifted from the wind-eroded reddish weathering crust in the mountainous regions to the Mesozoic and Cenozoic sandstone or mudstone in the peripheral regions of the basins, and then to the Mesozoic and Cenozoic fluvial and lacustrine deposits as well as the deserts in the basins. Moreover, the distribution of sand-dust source areas and the dust transport paths were correspondingly changed with the change of the general circulation patterns.
中文关键词	风尘沉积 ; 物源 ; 古风化壳 ; 晚新生代
英文关键词	aeolian deposits~ sand-dust source area provenance paleo-weathering crust
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:2296733
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219658
作者单位	中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	唐自华,穆桂金. 晚新生代中国北方风尘沉积的可能物源及变化[J]. 中国科学院新疆生态与地理研究所,2006,29(1):101-108.
APA	唐自华,&穆桂金.(2006).晚新生代中国北方风尘沉积的可能物源及变化.,29(1),101-108.
MLA	唐自华,et al."晚新生代中国北方风尘沉积的可能物源及变化".29.1(2006):101-108.