• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Geothermal Resources Council annual meeting >Comparative Analysis of Fluid Chemistry From Cove Fort, Roosevelt and Thermo: Implications for Geothermal Resources and Hydrothermal Systems on the East Edge of the Great Basin
【24h】

Comparative Analysis of Fluid Chemistry From Cove Fort, Roosevelt and Thermo: Implications for Geothermal Resources and Hydrothermal Systems on the East Edge of the Great Basin

机译：来自科夫堡，罗斯福和热流体的流体化学比较分析：对大盆地东缘的地热资源和热液系统的启示

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We assessed the thermal water compositions from Cove Fort, Roosevelt, and Thermo, and scattered hot springs to evaluate the controls on thermal water compositions within the Sevier thermal anomaly on the eastern edge of the Great Basin. The reservoir temperatures range from 150 to 250°C, and the reservoir rocks are diverse, including granite-gneiss, marine carbonates, and siliciclastic sequences. On the basis of major anions, the thermal waters are classified as chloride, sulfate, and hybrid chloride-sulfate type that contain variable but lower concentrations of bicarbonate. Low Mg and relatively low Cl/B further distinguish the reservoir waters at Cove Fort and Roosevelt compared to high-Mg waters with high Cl/B ratios. The oxygen and hydrogen isotopic compositions reflect the influence of local meteoric water, and the range of compositions reflect geography, recharge elevation, degree of water-rock interaction, and possibly age. Positive correlation between helium isotope R/Ra values and reservoir temperatures indicate mantle helium and magmatic heat are associated with convective fluid flow. Application of chemical geothermometers shows that aqueous silica concentrations are the most reliable geochemical indicator of a minimum resource temperature; in low-Mg thermal waters. hot Na/K temperatures possibly reflect deep equilibration with basement crystalline rocks. Locally, heat transfer is focused along range front faults in the form of convective geothermal systems with relatively small diameter upflow zones. The large regional endowment of thermal energy associated with hot basement rocks suggests there is considerable potential for finding a spectrum of blind resources including those occurring in deep sedimentary aquifers and EGS reservoirs.
机译：我们评估了Cove Fort，Roosevelt和Thermo的热水成分以及散布的温泉，以评估大盆地东部边缘Sevier热异常内的热水成分控制。储层温度范围为150至250°C，储层岩石种类繁多，包括花岗岩片麻岩，海相碳酸盐岩和硅质碎屑岩层序。根据主要阴离子，将热水分为氯化物，硫酸盐和混合氯化物-硫酸盐类型，其中包含可变但较低的碳酸氢盐浓度。与高Cl / B比的高Mg水相比，低Mg和相对低的Cl / B进一步区分了Cove Fort和罗斯福的储层水。氧气和氢气的同位素组成反映了局部陨石水的影响，组成范围反映了地理位置，补给高度，水-岩相互作用的程度以及可能的年龄。氦同位素R / Ra值与储层温度之间呈正相关，表明地幔氦和岩浆热与对流流体流动有关。化学地热仪的应用表明，二氧化硅水溶液的浓度是最低资源温度的最可靠的地球化学指标。在低镁的热水中。较高的Na / K温度可能反映了与基底晶体岩石的深度平衡。在局部，传热集中在对流地热系统的形式上，沿着对流带前断层，具有相对较小的直径上流区。与热基岩相关的区域性热能蕴藏量很大，这表明有相当大的潜力找到一系列盲目的资源，包括深部沉积含水层和EGS储层中的那些资源。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号