重庆大学学报2011，Vol.34Issue(5)：87-92,6.
利用δ18O和δ34S示踪重庆都市圈地下热水循环过程
Using δ18O and δ34S isotopic techniques to trace the recycling process of hot springs in Chongqing metropolitan
摘要
Abstract
There is about 100 million m3 underground thermal resource storage in Chongqing, of which 75 ％ are stockpiled in metropolitan area. 20 samples from 13 hot springs in Chongqing metropolitan area are collected and analyzed for chemistry and isotopes of heavy hydrogen, oxygen and sulfur. The results shows that these hot springs are SO42-Ca and SO42 -Ca-Mg, and the water sources is precipitation. The value of δ18O is between -7.41‰～-9.48‰, which can ascertain that the recharge area of these hot springs are the karst area in these anticlines and the karst area at the north of these anticlines with the altitude of 672～1 503 m. There is a good positive correlation between SO42- and Ca2+ , Mg2+. The δ34S value of the samples is between 31.46‰～34.32‰, precisely the same with the δ34S value in gypsum at the second phase of Jialingjiang formation in Early Trias. Both of them shows that rainflow and surface flow along the karst fissures infiltrate into the Jialingjiang Formation which have gypsum, and it also shows that the hot springs storage formation may be the second phase of Jialingjiang formation in Early Trias.关键词
地下热水/δ18O/δ34S/水化学/重庆都市圈Key words
hot springs/ δ18O/ δ34S/ hydrochemistry/ Chongqing metropolitan分类
天文与地球科学引用本文复制引用
肖琼,沈立成,袁道先,杨雷,陈展图,汪智军..利用δ18O和δ34S示踪重庆都市圈地下热水循环过程[J].重庆大学学报,2011,34(5):87-92,6.基金项目
科技部国际合作项目(2008GR1256) （2008GR1256）
重庆市科委院士专项(CSTC,2010BC7004) （CSTC,2010BC7004）
国家自然科学基金(41072192) （41072192）
西南大学研究生创新基金项目(kb2009004,ky2010002) （kb2009004,ky2010002）
