Stratigraphic framework and microfacies of the Triassic Lower Karamay Formation in districts , NW Junggar, China

doi:10.1007/s12583-014-0496-5

	Stratigraphic framework and microfacies of the Triassic Lower Karamay Formation in districts , NW Junggar, China
	He, Miao 5; Jin, Zhenkui 1; Li, Tingdong ; Guo, Xiujuan 2; Yang, Ting 3
刊名	JOURNAL OF EARTH SCIENCE
	2014
卷号	25 期号:6 页码:1003-1017
关键词	stratigraphy microfacies Triassic alluvial fan sand body remaining oil Karamay Junggar
ISSN号	1674-487X
DOI	10.1007/s12583-014-0496-5
英文摘要	The Triassic Lower Karamay Formation (T-2 k (1)) is one of the main oil-bearing stratigraphic units in the northwestern margin of Junggar Basin (NW Junggar), China. Based on an integrated investigation of outcrops, well logs and seismic data of NW Junggar, the Lower Karamay Formation is subdivided into 2 sets, 6 beds and 13 layers. Also, it is considered that the alluvial fan, the braided river, the meandering river and the shore-shallow lacustrine were developed during the early period of Middle Triassic in Karamay districts I, III. The Lower Karamay Formation deposits the following 9 sedimentary subfacies: the lower fan, the middle fan, the upper fan, the braided channel, the overflow bank, the river flood of braided river, the meandering channel, the river flood of meandering river, the shore-shallow lacustrine. Seventeen microfacies such as the braided stream channel, the alluvial sand floodplain, the alluvial glutenite floodplain, the water channel, the channel bar etc. have been identified in subfacies as well. The thickness of strata is firstly up-thinning and then thickening upward to the top, it is a process from large-scale lacustrine transgression to partly lacustrine regression. Furthermore, the microfacies planar distributing law proves that the remaining oil may enrich along the margin of microfacies because of the planar microfacies changes. Therefore, this research is beneficial for searching remaining oil in NW Junggar and providing information to the project "The Secondary Exploration" of PetroChina.
学科主题	地层学与地史学
WOS关键词	XINJIANG ; EVOLUTION ; BASIN ; OIL
WOS研究方向	Geology
语种	英语
出版者	CHINA UNIV GEOSCIENCES
WOS记录号	WOS:000346771700006
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40512]
专题	中国地质科学院
作者单位	1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China 2.China Univ Petr, Coll Geosci, Beijing 102249, Peoples R China 3.SINOPEC, Petr Explorat & Dev Res Inst, Oilfield Explorat Dept, Beijing 100083, Peoples R China 4.CNOOC, Res Inst, Overseas Evaluat Ctr, Beijing 100027, Peoples R China 5.中国地质科学院地质研究所
推荐引用方式 GB/T 7714	He, Miao,Jin, Zhenkui,Li, Tingdong,et al. Stratigraphic framework and microfacies of the Triassic Lower Karamay Formation in districts , NW Junggar, China[J]. JOURNAL OF EARTH SCIENCE,2014,25(6):1003-1017.
APA	He, Miao,Jin, Zhenkui,Li, Tingdong,Guo, Xiujuan,&Yang, Ting.(2014).Stratigraphic framework and microfacies of the Triassic Lower Karamay Formation in districts , NW Junggar, China.JOURNAL OF EARTH SCIENCE,25(6),1003-1017.
MLA	He, Miao,et al."Stratigraphic framework and microfacies of the Triassic Lower Karamay Formation in districts , NW Junggar, China".JOURNAL OF EARTH SCIENCE 25.6(2014):1003-1017.