Provenance and tectonic setting of Early Eocene Sohnari Member of Laki Formation from southern Indus Basin of Pakistan

doi:10.1002/gj.3011

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Provenance and tectonic setting of Early Eocene Sohnari Member of Laki Formation from southern Indus Basin of Pakistan
	Hakro, Asghar A. A. D.1,2; Xiao, Wenjiao 1,3,4; Yan, Zhen 5; Mastoi, Abdul S.2,6
刊名	GEOLOGICAL JOURNAL
	2018-09-01
卷号	53 期号:5 页码:1854-1870
关键词	Early Eocene geochemistry provenance southern Indus Basin tectonic setting
ISSN号	0072-1050
DOI	10.1002/gj.3011
英文摘要	The current study is carried out the bulk mineralogical and geochemical investigation of the Early Eocene Sohnari coal-bearing sedimentary rocks from the southern Indus Basin in Pakistan. The sediments of the Sohnari Member of Laki Formation are composed of shale and sandstone. Their provenance and tectonic setting can well constrain the evolution of the Indus Basin and help solve the controversy regarding the timing of the India-Eurasia collision. X-ray diffraction results confirm the existence of abundant quartz, zircon, and hematite. The assemblages of hematite, calcite, halite, and gypsum indicate the depositional history of Early Eocene time of southern Indus Basin had with dry, low temperature, and high salinity conditions. The geochemical results demonstrate that the Sohnari sediments are dominated by mature sublitharenites derived predominantly from quartz sedimentary and felsic rocks with minor arc-related mafic inputs. The chemical index of alteration and plagioclase index of alteration of the Sohnari Member indicate the sediments experienced low to high weathering conditions in the southern Indus Basin during Early Eocene time. The provenance characteristics suggest that the Early Eocene sediments were deposited in a passive margin, instead of a foreland basin. Therefore, we propose that India might still have not collided with Eurasia in the Ypresian of Early Eocene (56-47.8Ma).
资助项目	Chinese Academy of Sciences[XDB03010801]
WOS关键词	ASIA CONTINENTAL COLLISION ; INDIA-EURASIA COLLISION ; RARE-EARTH-ELEMENTS ; PLATE-TECTONICS ; PALEOMAGNETIC CONSTRAINTS ; DEPOSITIONAL ENVIRONMENT ; GEOCHEMICAL COMPOSITION ; SEDIMENTARY PROCESSES ; BARA FORMATION ; TIBET EVIDENCE
WOS研究方向	Geology
语种	英语
出版者	WILEY
WOS记录号	WOS:000443563400015
资助机构	Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88466]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者	Xiao, Wenjiao
作者单位	1.Xinjiang Inst Ecol & Geog, Xinjiang Ctr Mineral Resources, Urumqi, Peoples R China 2.Univ Sindh, Ctr Pure & Appl Geol, Jamshoro, Pakistan 3.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 5.Chinese Acad Geol Sci, Inst Geol, Beijing, Peoples R China 6.Univ Sci & Technol China, Sch Earth & Space Sci, Key Lab Crust Mantle Mat & Environm, Hefei, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Hakro, Asghar A. A. D.,Xiao, Wenjiao,Yan, Zhen,et al. Provenance and tectonic setting of Early Eocene Sohnari Member of Laki Formation from southern Indus Basin of Pakistan[J]. GEOLOGICAL JOURNAL,2018,53(5):1854-1870.
APA	Hakro, Asghar A. A. D.,Xiao, Wenjiao,Yan, Zhen,&Mastoi, Abdul S..(2018).Provenance and tectonic setting of Early Eocene Sohnari Member of Laki Formation from southern Indus Basin of Pakistan.GEOLOGICAL JOURNAL,53(5),1854-1870.
MLA	Hakro, Asghar A. A. D.,et al."Provenance and tectonic setting of Early Eocene Sohnari Member of Laki Formation from southern Indus Basin of Pakistan".GEOLOGICAL JOURNAL 53.5(2018):1854-1870.