干旱区生态环境知识资源中心(Arid): Chlorine isotopes unravel conditions of formation of the Neoproterozoic rock salts from the Salt Range Formation, Pakistan

Arid

DOI	10.1139/cjes-2019-0149
	Chlorine isotopes unravel conditions of formation of the Neoproterozoic rock salts from the Salt Range Formation, Pakistan
	Hussain, Syed Asim; Han, Feng-Qing; Han, Jibin; Khan, Hawas; Widory, David
通讯作者	Hussain, SA
来源期刊	CANADIAN JOURNAL OF EARTH SCIENCES
ISSN	0008-4077
EISSN	1480-3313
出版年	2020
卷号	57 期号:6 页码:698-708
英文摘要	During the late Neoproterozoic, the Salt Range in Pakistan was one of the regions where the Tethys truncated and marine strata developed. The numerous transgressions and regressions that occurred during that period provided enough initial material for the development of marine evaporites. The geology of the Salt Range is characterized by the presence of dense salt layers and the existence of four regional and local scale unconformities. These thick salt deposits geologically favor potash formation. Here we coupled chloride isotope geochemistry and classical chemistry of local halite samples to assess the extent of brine evaporation that ultimately formed the salt deposits. Our results indicate that evaporites in the Salt Range area are Br-rich and precipitated from seawater under arid climate conditions. The corresponding delta Cl-37 values vary from -1.04 parts per thousand to 1.07 parts per thousand, with an average of -0.25 parts per thousand +/- 0.52 parts per thousand, consistent with the isotope range values reported for other evaporites worldwide. The positive delta Cl-37 values we obtained indicate the addition of nonmarine Cl, possibly from reworking of older evaporites, the influx of dilute seawater, the mixing of meteoric and seawater, and the influence of gypsum-dehydration water. The negative Cl isotope compositions (delta Cl-37 < -1 parts per thousand) indicate that brines reached the last stages of salt deposition during the late Neoproterozoic. We conclude that the Salt Range Formation could be promising for K-Mg salts.
英文关键词	halite Neoproterozoic sylvite delta Cl-37 Salt Range Formation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000537715300003
WOS关键词	FLUID INCLUSIONS ; HUQF SUPERGROUP ; ION FILTRATION ; BASIN ; FRACTIONATION ; ORIGIN ; EVAPORITES ; HALITE ; BRINE ; CONSTRAINTS
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324631
作者单位	[Hussain, Syed Asim; Han, Feng-Qing; Han, Jibin] Chinese Acad Sci, Key Lab Comprehens & Highly Efficient Utilizat Sa, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China; [Hussain, Syed Asim; Han, Feng-Qing; Han, Jibin] Qinghai Prov Key Lab Geol & Environm Salt Lakes, Xining 810008, Peoples R China; [Hussain, Syed Asim] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Khan, Hawas] Karakoram Int Univ, Dept Earth Sci, Gilgit 15100, Pakistan; [Widory, David] Univ Quebec Montreal, Geotop, Earth & Atmosphere Sci Dept, Montreal, PQ, Canada
推荐引用方式 GB/T 7714	Hussain, Syed Asim,Han, Feng-Qing,Han, Jibin,et al. Chlorine isotopes unravel conditions of formation of the Neoproterozoic rock salts from the Salt Range Formation, Pakistan[J],2020,57(6):698-708.
APA	Hussain, Syed Asim,Han, Feng-Qing,Han, Jibin,Khan, Hawas,&Widory, David.(2020).Chlorine isotopes unravel conditions of formation of the Neoproterozoic rock salts from the Salt Range Formation, Pakistan.CANADIAN JOURNAL OF EARTH SCIENCES,57(6),698-708.
MLA	Hussain, Syed Asim,et al."Chlorine isotopes unravel conditions of formation of the Neoproterozoic rock salts from the Salt Range Formation, Pakistan".CANADIAN JOURNAL OF EARTH SCIENCES 57.6(2020):698-708.