干旱区生态环境知识资源中心(Arid): 塔北隆起三叠系-新近系的砂岩和粉砂岩中粘土矿物的分布特征及影响因素

Arid

	塔北隆起三叠系-新近系的砂岩和粉砂岩中粘土矿物的分布特征及影响因素
其他题名	Distribution characteristics of clay minerals in the sandstone and siltstone of Tabei Uplift from Triassic to Neogene and their influence factors
	赵明 1; 季俊峰 1; 陈小明 1; 吴昌志 1; 陈永权 2; 武兵 1
来源期刊	南京大学学报. 自然科学版
ISSN	0469-5097
出版年	2015
卷号	51 期号:6 页码:1256-1267
中文摘要	利用X射线衍射和电子探针实验方法来研究塔北隆起三叠系-新近系的砂岩和粉砂岩中粘土矿物的分布特征及绿泥石的成分,获得了以下认识:(1)研究区存在三种粘土矿物组合类型:R0I/S+I+Chl、Ka+Chl+I、I+ Chl.绿泥石多型为Ⅱb型,根据绿泥石成分分为辉绿泥石和铁镁绿泥石.(2)研究区粘土矿物的纵向分布及绿泥石成分的变化与成岩作用的关系不是非常密切.利用岩石地球化学方法,结合区域地质构造演变史,获得影响本区粘土矿物组合纵向分布特征的主要因素是构造地质环境、沉积物源和古环境.研究结果显示,当层位处在构造活动强烈,物源区未经历强烈风化,沉积物为快速堆积,古气候为半干旱至干旱的环境时,形成的粘土矿物组合主要为 R0I/S+I+Chl;当层位处在构造地质环境稳定,物源区强烈风化,沉积物经历了一定的搬运后再沉积,并为湿润的古气候时,形成的粘土矿物组合主要为Ka+Chl+I.
英文摘要	The research on clay minerals is an important way to solve some fundamental geological problems since it can sensitively reflect the geochemical environment of basin sediments and diagenesis.The formation,transformation and disappearance of clay minerals are complex geological processes these are controlled by many kinds of geological factors.For the continental sedimentary basins,the distribution of the clay minerals is the result of the interaction among the ancient environment,the diagenesis,the sources of the sediments,and etc.However,some of the factors have more influence on the distribution of the clay minerals than the others.All the factors that affected the distribution of clay minerals are related to the tectonic setting of the sedimentary basins and tectonic development history. Tectonic movement is the most important controller to the sedimentation.The distribution of clay minerals is acting as an important record in response to these factors.The purpose of this paper is to investigate the characteristics of the clay mineral assemblages in different depths and different strata of Tabei Uplift,and to explore the main factors affecting the distribution of clay minerals in this area.The analysis has been done on the following two aspects:1.By using X-ray diffraction and electron microprobe methods to study the distribution characteristics of the clay minerals and chlorite composition in the sandstone and siltstone of Tabei uplift from Triassic to Neogene,the following understandings have been obtained.(1)There are three types of clay mineral assemblages in the studied area:R0I/S+I+ Chl,Ka+Chl+I,and I+Chl.The chlorites belong to typeⅡb.According to the chlorite components,they can be defined as diabantite and brunsvigite.(2)The vertical distribution of the clay minerals and the variances in chlorite compositions in the area are not very closely related to their diagenesis.2.By using the rock geochemical method along with regional geological tectonic evolution history,it is revealed that the vertical distribution of clay mineral assemblages in this area is mainly affected by the tectonic geological environment,the provenance of sediments,and the ancient environment.The clay mineral assemblage is mainly R0I/S+I+Chl when the strata were in strong tectonic activity,the source area was not strongly weathered,the sediment was close to the source area,and the ancient climate was semi-arid to arid.The clay mineral assemblage is mainly Ka+Chl+I when the strata were in stable tectonic environment,the source area was strongly weathered,the sediment underwent certain removal and deposition,and the ancient climate was humid.
中文关键词	塔北隆起 ; 粘土矿物组合 ; 岩石地球化学 ; 构造地质环境 ; 沉积物源 ; 古环境
英文关键词	Tabei Uplift clay mineral assemblage rock geochemistry tectonic geological environment provenance of sediment ancient environment
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AUTOMATION CONTROL SYSTEMS
WOS研究方向	Automation & Control Systems
CSCD记录号	CSCD:5603502
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233004
作者单位	1.南京大学地球科学与工程学院, 南京, 江苏 210023, 中国; 2.新疆塔里木油田公司勘探开发研究院, 库尔勒, 新疆 841000, 中国
推荐引用方式 GB/T 7714	赵明,季俊峰,陈小明,等. 塔北隆起三叠系-新近系的砂岩和粉砂岩中粘土矿物的分布特征及影响因素[J],2015,51(6):1256-1267.
APA	赵明,季俊峰,陈小明,吴昌志,陈永权,&武兵.(2015).塔北隆起三叠系-新近系的砂岩和粉砂岩中粘土矿物的分布特征及影响因素.南京大学学报. 自然科学版,51(6),1256-1267.
MLA	赵明,et al."塔北隆起三叠系-新近系的砂岩和粉砂岩中粘土矿物的分布特征及影响因素".南京大学学报. 自然科学版 51.6(2015):1256-1267.