气候变化领域集成服务门户(CCPortal): Origin and Evolution of Saline Spring Water in North and Central Laos Based on Hydrochemistry and Stable Isotopes (delta D, delta O-18, delta B-11, and delta Cl-37)

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DOI	10.3390/w13243568
	Origin and Evolution of Saline Spring Water in North and Central Laos Based on Hydrochemistry and Stable Isotopes (delta D, delta O-18, delta B-11, and delta Cl-37)
	Qin, Xiwei; Ma, Haizhou; Zhang, Xiying; Hu, Xiasong; Li, Guorong; Jiang, Ziwen; Cheng, Huaide; Han, Jibin; Li, Yongshou; Miao, Weiliang; Han, Wenhua; Yang, Sha; Song, Qian; Lei, Shang; Wang, Hongying
通讯作者	Qin, XW (通讯作者)，Qinghai Univ, Dept Geol Engn, Xining 810016, Peoples R China. ; Qin, XW ; Ma, HZ (通讯作者)，Chinese Acad Sci, Key Lab Comprehens & Highly Efficient Utilizat Sa, Qinghai Inst Salt Lakes, Northwest Inst Ecoenvironm & Resources, Xining 810008, Peoples R China. ; Qin, XW ; Ma, HZ (通讯作者)，Chinese Acad Sci, Key Lab Salt Lake Geol & Environm Qinghai Prov, Qinghai Inst Salt Lakes, Northwest Inst Ecoenvironm & Resources, Xining 810008, Peoples R China.
发表日期	2021
EISSN	2073-4441
卷号	13 期号:24
英文摘要	This paper discusses the origin and evolution of saline springs in north and central Laos, based on chemical and stable isotopes (delta D, delta O-18, delta B-11, and delta Cl-37). All the saline springs in this study are of the Na-Cl geochemical type. The geochemical and water isotope values suggest that the saline springs in this study are mainly derived from meteoric water and/or ice and snow melt from the surrounding mountains and that they also experienced strong evaporation and intense rock-water interactions. The ionic ratios, characteristic coefficients, ternary Ca-SO4-HCO3 phase diagrams, and saturation indices of minerals show that the dissolution of halite, sulfate, and carbonate rocks may be the solute sources for saline springs in this study, whereas the underground brines in the Thakhek potash mining area are geochemically influenced by the dissolution of carnallite and sylvite. The global geothermal delta B-11-Cl/B relationship and delta B-11 values (5.50 to 36.01 parts per thousand) of saline springs suggest a continental origin of B. This B is most likely derived from marine carbonate rocks and marine evaporates (gypsum and halite) of the late Cretaceous, which is similar to the saline springs of the Nangqen-Qamdo-Simao Salt Basin. The delta Cl-37 value (-0.12 to +0.79) and the Cl/Br ratio (4076 to 9853) show that dissolution of late cretaceous marine halite layers, atmospheric precipitation, and water-rock interactions between volcanic rocks, mudstones, and sandstone can restrict the delta Cl-37 values in saline springs. Results from silica geothermometry and multi-mineral equilibrium diagrams indicate that the reservoir temperatures for the saline springs range from 87-137 degrees C and experience deep circulation. Hydrochemical characteristic coefficients suggest that saline springs in the Muang Say basin may have leached sylvinite and carnallite and that the potash exploration prospect in this area is relatively good.
关键词	RED-BED SEQUENCES CHLORINE ISOTOPES KHORAT PLATEAU GEOTHERMAL WATERS SIMAO BASIN HYDROTHERMAL SYSTEMS MENGYEJING FORMATION BORON GEOCHEMISTRY FLUID INCLUSIONS POTASH DEPOSITS
英文关键词	saline springs; stable isotopes; recharge and solute sources; reservoir temperatures; marine evaporites; potash exploration prospect
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
WOS类目	Environmental Sciences ; Water Resources
WOS记录号	WOS:000737336500001
来源期刊	WATER
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253672
作者单位	[Qin, Xiwei; Hu, Xiasong; Li, Guorong; Jiang, Ziwen; Yang, Sha; Song, Qian; Lei, Shang; Wang, Hongying] Qinghai Univ, Dept Geol Engn, Xining 810016, Peoples R China; [Qin, Xiwei; Ma, Haizhou; Zhang, Xiying; Cheng, Huaide; Han, Jibin; Li, Yongshou; Miao, Weiliang; Han, Wenhua] Chinese Acad Sci, Key Lab Comprehens & Highly Efficient Utilizat Sa, Qinghai Inst Salt Lakes, Northwest Inst Ecoenvironm & Resources, Xining 810008, Peoples R China; [Qin, Xiwei; Ma, Haizhou; Zhang, Xiying; Cheng, Huaide; Han, Jibin; Li, Yongshou; Miao, Weiliang; Han, Wenhua] Chinese Acad Sci, Key Lab Salt Lake Geol & Environm Qinghai Prov, Qinghai Inst Salt Lakes, Northwest Inst Ecoenvironm & Resources, Xining 810008, Peoples R China
推荐引用方式 GB/T 7714	Qin, Xiwei,Ma, Haizhou,Zhang, Xiying,et al. Origin and Evolution of Saline Spring Water in North and Central Laos Based on Hydrochemistry and Stable Isotopes (delta D, delta O-18, delta B-11, and delta Cl-37)[J]. 中国科学院西北生态环境资源研究院,2021,13(24).
APA	Qin, Xiwei.,Ma, Haizhou.,Zhang, Xiying.,Hu, Xiasong.,Li, Guorong.,...&Wang, Hongying.(2021).Origin and Evolution of Saline Spring Water in North and Central Laos Based on Hydrochemistry and Stable Isotopes (delta D, delta O-18, delta B-11, and delta Cl-37).WATER,13(24).
MLA	Qin, Xiwei,et al."Origin and Evolution of Saline Spring Water in North and Central Laos Based on Hydrochemistry and Stable Isotopes (delta D, delta O-18, delta B-11, and delta Cl-37)".WATER 13.24(2021).