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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
文章类型Article
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.
关键词b Isotope Composition Halite Qarhan Salt Lake Qaidam Basin Western China
WOS标题词Science & Technology ; Physical Sciences
关键词[WOS]IONIZATION MASS-SPECTROMETRY ; QAIDAM BASIN ; POTASH EVAPORITES ; TIBETAN PLATEAU ; SEA-WATER ; ORIGIN ; NONMARINE ; MARINE ; FRACTIONATION ; SEDIMENTS
收录类别SCI
语种英语
WOS研究方向Geology
WOS类目Geology
WOS记录号WOS:000355059900003
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
科研管理、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.
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