4.5 Article

Modeling a fractured geothermal reservoir using 3-D AMT data inversion: Insights from Garibaldi Volcanic Belt, British Columbia, Canada

期刊

GEOTHERMICS
卷 105, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.geothermics.2022.102528

关键词

Magnetotelluric; Resistivity; Meager Mountain; Geothermal Exploration; Alteration Minerals; Hydrothermal Activity

资金

  1. NRCan
  2. GeoScience BC
  3. Natural Sciences and Engineering Research Council of Canada through Carleton University

向作者/读者索取更多资源

An audio-magnetotelluric (AMT) survey was conducted to explore shallow geothermal resources in the Garibaldi Volcanic Belt in Canada. The survey revealed complex 3-D subsurface structure, with high conductivity features related to hydrothermal alteration in the south and north regions. Clay cap layers connect to the surface, and conductive zones are located near warm springs along Meager Creek. Integrating the AMT model, geology, and temperature data is crucial for building a conceptual model of the Mount Meager geothermal system.
An audio-magnetotelluric (AMT) survey was conducted to explore for shallow geothermal resources in the Garibaldi Volcanic Belt, the location of which has the highest geothermal potential in Canada. The data cover the south Meager geothermal system, including Pylon Peak and Meager Creek which have proven borehole temperatures exceeding 250 degrees C. A dimensionality analysis of the AMT data suggests complex 3-D subsurface structure. The 3-D resistivity model of the area shows two high conductivity features near surface in the areas south of Pylon Peak and north of Meager Creek, both of which are related to hydrothermal alteration. These layers act as the caprock and connect close to the surface. The conductive zones reach surface near the locations of warm springs along Meager Creek. Clay cap layers are interpreted to consist mainly of smectite, illite and rare kaolinite with the resistivities below 15 Omega m in our model. The caprock overlays fractured quartz diorite permeated by hot water. This hot fluid reservoir is related to a higher resistivity feature coinciding with high temperature zones at a depth of approximately 1 km below sea level. This model illustrates possible conduits through which the hydrothermal fluids were transported to thermal springs at the surface. This research shows that integrating the AMT model, geology, and temperature data is crucial to build a conceptual model of the Mount Meager geothermal system to support targeted drilling by industry.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据