| 四川康定地热田地下热水成因研究 |
| |
| 关键词:genesis of geothermal waters Kangding hydrogeochemistry stable isotopes |
| 基金项目:国家自然科学基金项目(编号: U1602233) |
|
| 摘要点击次数: 3335 |
| 全文下载次数: 2703 |
| 摘要: |
| Genesis of Geothermal Waters in the Kangding Geothermal Field,Sichuan Province |
| The Kangding geothermal field is located in the transitional zone between the western margin of the Sichuan Basin and the Tibetan Plateau. It belongs to the deep circulation high temperature geothermal system on the background of high heat flux. In this paper, geothermal water in the Kangding geothermal field was taken as the study object. Through sampling the geothermal waters from hot springs and geothermal wells in two main thermal display areas, i.e.,Yulinhe and Yalahe, and analyzing water chemistry and stable isotopes, the authors studied the recharge source and reservoir temperature of geothermal water. The hydrochemical type of geothermal waters in Yala and Yulin river areas are HCO3-Na and HCO3?Cl-Na, indicating the characteristics of deep geothermal water mixed with shallow water along the upwellings. According to the analysis and calculation of geothermal waters’ isotope analyses, the recharge source of geothermal waters are precipitation in Gongga Mountain, and the recharge elevation of geothermal waters in Yalahe and Yulinhe areas are 5 600~5 900 m and 5 300~6 300 m respectively. Because of the higher reservoir temperature, the geothermal waters in Yulinhe area has obvious phenomenon of oxygen drift, and the results of silicon and cation geothermometers are consistent with the above judgment, which demonstrates that the reservoir temperature of geothermal waters in Yalahe and Yulinhe areas are 172~188 ℃ and 192~288 ℃ respectively. |
| BIAN Yue-yue,ZHAO Dan.2018.Genesis of Geothermal Waters in the Kangding Geothermal Field,Sichuan Province[J].Acta Geoscientica Sinica,39(4):491-497. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
|
|