气候变化领域集成服务门户(CCPortal): The origins of the Mengye potash deposit in the Lanping-Simao Basin, Yunnan Province, Western China

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DOI	10.1016/j.oregeorev.2015.02.003
	The origins of the Mengye potash deposit in the Lanping-Simao Basin, Yunnan Province, Western China
	Li, Minghui; Yan, Maodu; Wang, Zhengrong; Liu, Xiaoming; Fang, Xiaomin; Li, Jiao
通讯作者	Li, MH (通讯作者)
发表日期	2015
ISSN	0169-1368
EISSN	1872-7360
起始页码	174
结束页码	186
卷号	69
英文摘要	The Lanping-Simao Basin (LSB) is a Mesozoic-Cenozoic continental margin rift basin in Western China. It formed during the opening and closing of the Tethys Ocean. This basin is also known as a metal belt as it hosts several metal deposits, besides, the Mengye potash deposit. However, the exact dates of the formation either in the Paleocene or the Cretaceous, and thus the origins of the marine, continental or mixed origins of the Mengye deposits, remain disputed. Based on the basin's evolution, materials of marine origin and/or remnant seawater should be present, but instead the salt layers of the Mengye potash deposit present typically continental lithological features. This study examines and reviews evaporative minerals, Br/Cl and I/Cl molar ratios, and isotopes of S, B, and Sr. land I/Cl data for this area has not been previously reported. The basin's evaporative minerals are dominated by halite and sylvite. The amounts of anhydrite, chlorocalcite, langbeinite, glaserite, tachyhydrite and glauberite are small. All of these form in both marine and continental environments. The values of! and the If Cl molar ratios of halite and sylvite are from 0.07 to 027 ppm, and from 0.03 to 0.11 x 10(-6), respectively, dependent on organic substances. Br and molar Br/Cl values are from 89.08 to 555.45 ppm and from 0.06 x 10(-3) to 0.38 x 10(-3), respectively. All of the Br/Cl molar ratios are lower than those of seawater, and most of them are <0.1, suggesting continental or mixed origin. Previously published delta S-34, delta B-11 and Sr-87/Sr-86 values for evaporative minerals indicate a continental origin for the Mengye potash deposit. However, materials of hydrothermal origin are widely distributed in the basin and may have played an active role for the formation of the potash deposit. Thus the Mengye potash deposit could be of continental origin, with a remnant seawater trace. (C) 2015 Elsevier B.V. All rights reserved.
关键词	BORON ISOTOPIC COMPOSITION INDO-CHINA CRETACEOUS ROCKS SEAWATER CHEMISTRY CLOCKWISE ROTATION PALEOMAGNETIC DATA SECULAR VARIATION KHORAT PLATEAU NEW-BRUNSWICK QAIDAM BASIN
英文关键词	Potash deposit; I/Cl; Br/Cl; Strontium isotope; Boron isotope; Sulfur isotope
语种	英语
WOS研究方向	Geology ; Mineralogy ; Mining & Mineral Processing
WOS类目	Geology ; Mineralogy ; Mining & Mineral Processing
WOS记录号	WOS:000356754500011
来源期刊	ORE GEOLOGY REVIEWS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258535
推荐引用方式 GB/T 7714	Li, Minghui,Yan, Maodu,Wang, Zhengrong,et al. The origins of the Mengye potash deposit in the Lanping-Simao Basin, Yunnan Province, Western China[J]. 中国科学院青藏高原研究所,2015,69.
APA	Li, Minghui,Yan, Maodu,Wang, Zhengrong,Liu, Xiaoming,Fang, Xiaomin,&Li, Jiao.(2015).The origins of the Mengye potash deposit in the Lanping-Simao Basin, Yunnan Province, Western China.ORE GEOLOGY REVIEWS,69.
MLA	Li, Minghui,et al."The origins of the Mengye potash deposit in the Lanping-Simao Basin, Yunnan Province, Western China".ORE GEOLOGY REVIEWS 69(2015).