摘要
通过对柯街断裂带上2个温泉(梁园温泉和大地温泉)水样的阴阳离子分析,正确划分了温泉水的水化学类型;同位素数据表明,2个样品的δD和δ18 O值均在大气降水线附近,且未显示δ18 O值向右漂移现象,说明该区地下热水具有现代大气降水的氢氧同位素组成特征,推断温泉形成与火山、岩浆型热源没有直接关系。大气降水的同位素组成与海拔高程之间的耦合关系,证明了地下热水补给源区位于西部山区;通过采用SiO2温标计算得出了温泉的热储温度和热水循环深度。梁园温泉热储温度为100.1℃,热水循环深度是1 643.3m,大地温泉热储温度为79.8℃,热水循环深度是1 237.2m。柯街断裂带的构造特征及岩性特征与地下热水的水化学组成、深循环机制和冷热水的混合机制有着本质的联系。
In this paper,chemical analysis of two water samples was completed and chemical types of water were divided.The results of deuterium and oxygen isotope analysis showed thatδD andδ18 O values were all near the LMWL,and no evidences proved that the value ofδ18 O had the right drifting.The results illustrated that the isotope character of the thermal ground water was related to modern atmospheric precipitation event,accordingly,there was no direct relationship between magmatic and hot springs.The coupling relationship between isotopic composition of the atmospheric precipitation and the elevation proved that the recharge areas of the hot springs were located in the western mountains.In this study,the temperature of storage energy and the depth of geothermal reservoir were achieved by using SiO2temperature scale calculation.The structural features and lithological characteristics of Kejie fault were intrinsically linked to the chemical composition of underground hot water,deep-cycle mechanisms,and mixing mechanism.
出处
《地质科技情报》
CAS
CSCD
北大核心
2014年第4期191-196,共6页
Geological Science and Technology Information
基金
中国地质科学院岩溶地质研究所基本科研业务费项目(201303
201308)
中国地质调查局地质调查项目(1212011220390)
关键词
柯街断裂
水化学
同位素
热储温度
热水循环深度
温泉
Kejie fault
hydrochemistry
isotope
geothermal reservoir
temperature of storage energy
depth of spring cycling
hot spring
