Chlorine isotopic geochemistry of salt lakes in the Qaidam Basin, China

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	Chlorine isotopic geochemistry of salt lakes in the Qaidam Basin, China
	Liu, WG; Xiao, YK; Wang, QZ; Qi, HP; Wang, YH; Zhou, YM; Shirodkar, PV
	1997
发表期刊	CHEMICAL GEOLOGY
ISSN	0009-2541
卷号	136 期号:3-4 页码:271-279
摘要	The isotopic compositions of chlorine in salt lake brine coexisting with halite, oil-field water and river water from the Qaidam Basin (Qinghai, China) have been examined using high-precision measurement of chlorine isotopes based on thermal ionization mass spectrometry of the Cs2Cl+ ion. delta(37)Cl values vary from -2.05 to +2.94 parts per thousand, with average values of +2.94 parts per thousand for hot spring water, -1.35 parts per thousand for river water, -0.38 parts per thousand for oil-field brine, -0.40 parts per thousand for saline water and -0.63 parts per thousand for salt lake brine. The preliminary results show isotopic fractionation of chlorine in salt lake brine during salt precipitation, The variation of the delta(37)Cl value in these salt lakes is mainly associated with brine evaporation and halite precipitation and with the hydrochemistry of the input water. The chlorine isotopic composition may reflect the degree of evaporation of the salt lake brine and may be used to distinguish brines that are in equilibrium with precipitating salts and brines that have dissolved earlier evaporates. The isotopic compositions of chlorine in salt lake brine coexisting with halite, oil-field water and river water from the Qaidam Basin (Qinghai, China) have been examined using high-precision measurement of chlorine isotopes based on thermal ionization mass spectrometry of the Cs2Cl+ ion. delta(37)Cl values vary from -2.05 to +2.94 parts per thousand, with average values of +2.94 parts per thousand for hot spring water, -1.35 parts per thousand for river water, -0.38 parts per thousand for oil-field brine, -0.40 parts per thousand for saline water and -0.63 parts per thousand for salt lake brine. The preliminary results show isotopic fractionation of chlorine in salt lake brine during salt precipitation, The variation of the delta(37)Cl value in these salt lakes is mainly associated with brine evaporation and halite precipitation and with the hydrochemistry of the input water. The chlorine isotopic composition may reflect the degree of evaporation of the salt lake brine and may be used to distinguish brines that are in equilibrium with precipitating salts and brines that have dissolved earlier evaporates.
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/2385
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所
推荐引用方式 GB/T 7714	Liu, WG,Xiao, YK,Wang, QZ,et al. Chlorine isotopic geochemistry of salt lakes in the Qaidam Basin, China[J]. CHEMICAL GEOLOGY,1997,136(3-4):271-279.
APA	Liu, WG.,Xiao, YK.,Wang, QZ.,Qi, HP.,Wang, YH.,...&Shirodkar, PV.(1997).Chlorine isotopic geochemistry of salt lakes in the Qaidam Basin, China.CHEMICAL GEOLOGY,136(3-4),271-279.
MLA	Liu, WG,et al."Chlorine isotopic geochemistry of salt lakes in the Qaidam Basin, China".CHEMICAL GEOLOGY 136.3-4(1997):271-279.