Boron occurrence in halite and boron isotope geochemistry of halite in the Qarhan Salt Lake, western China

ISL OpenIR > 青海盐湖研究所知识仓储

	Boron occurrence in halite and boron isotope geochemistry of halite in the Qarhan Salt Lake, western China
	Fan, QiShun; Ma, YunQi; Cheng, HuaiDe; Wei, HaiCheng; Yuan, Qin; Qin, ZhanJie; Shan, FaShou
	2015-06-01
发表期刊	SEDIMENTARY GEOLOGY
卷号	322 页码:34-42
关键词	b Isotope Composition Halite Qarhan Salt Lake Qaidam Basin Western China
摘要	Previous studies have investigated boron (B) isotope composition of salt lake brines in the Qaidam Basin, western China. However, the research on B isotope geochemistry of halite from a sediment core in a typical sedimentary basin has been very limited. In this study, a 102-m-long drill core (ISL1A) was recovered from Qarhan Salt take in eastern Qaidam Basin. Forty-three halite samples from upper 44.0 m in ISL1A were collected and analyzed for chemical compositions (K+, Na+, Ca2+, Mg2+, Cl-, SO42-, Sr2+ and B3+) and B isotopes in order to investigate their relationships, and B isotope fractionation between halite and brines in the Qarhan Salt Lake. The results show that: (1) more B3+ and Mg2+ values in halite are low concentrations and more concentrated, and low B3+ concentrations have a strong correlation with low Mg2+ in halite, which imply that they might be the same source; (2) low Mg2+ values in halite from ISL1A have a similar trend with Mg-m(2+) (molarity) of fluid inclusion brines from two sediment cores (east to ISL1A about 50 km) in the study area, suggesting that low B3+ and Mg2+ concentrations should derive from fluid inclusions in halite based on X-ray diffraction results in ISL1A that no borate and small amount of magnesium salts were deposited; (3) delta B-11 values of halite in ISL1A range from -0.35 to +5.84 parts per thousand, which are in the range of those of river water and brines (-1.0 to +9.6 parts per thousand), and almost overlapped with those of brines (+2.9 to + 7.5 parts per thousand) in the Qarhan Salt Lake. These results suggest that no or minor B isotope fractionation between halite and brine occurred. (C) 2015 Elsevier B.V. All rights reserved.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/6138
专题	青海盐湖研究所知识仓储盐湖地质与环境实验室支撑部门
作者单位	Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
推荐引用方式 GB/T 7714	Fan, QiShun,Ma, YunQi,Cheng, HuaiDe,et al. Boron occurrence in halite and boron isotope geochemistry of halite in the Qarhan Salt Lake, western China[J]. SEDIMENTARY GEOLOGY,2015,322:34-42.
APA	Fan, QiShun.,Ma, YunQi.,Cheng, HuaiDe.,Wei, HaiCheng.,Yuan, Qin.,...&Shan, FaShou.(2015).Boron occurrence in halite and boron isotope geochemistry of halite in the Qarhan Salt Lake, western China.SEDIMENTARY GEOLOGY,322,34-42.
MLA	Fan, QiShun,et al."Boron occurrence in halite and boron isotope geochemistry of halite in the Qarhan Salt Lake, western China".SEDIMENTARY GEOLOGY 322(2015):34-42.