Regional crustal-scale structures as conduits for deep geothermal upflow
| Autor: | Drew L. Siler, B. Mack Kennedy |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010504 meteorology & atmospheric sciences
Renewable Energy Sustainability and the Environment Geochemistry Geology Structural basin 010502 geochemistry & geophysics Geotechnical Engineering and Engineering Geology 01 natural sciences Mantle (geology) Electrical conduit Geothermal fluid Fluid dynamics Geothermal gradient Geomorphology 0105 earth and related environmental sciences |
| Zdroj: | Geothermics. 59:27-37 |
| ISSN: | 0375-6505 |
| DOI: | 10.1016/j.geothermics.2015.10.007 |
| Popis: | Geothermal fluids produced from two of the largest production geothermal fields in the Great Basin have helium isotope ratios that are anomalously high relative to basin-wide trends. These data indicate that the geothermal systems, Dixie Valley, Nevada and McGinness Hills, Nevada have an anomalously high fraction of mantle derived fluid. These connections to deeply derived fluid and heat may supplement crustal heat production and be responsible, in part, for the anomalously high production capacity, relative to other Great Basin geothermal fields, that Dixie Valley and McGinness Hills support. Deep-seated crustal structures across the Great Basin and around the world are known to be associated with structural reactivation, can have relatively high permeability, and can act as fluid flow conduits. These deep seated structures across the Great Basin control upflow of deeply derived heat and fluids into the shallow geothermal systems at Dixie Valley and McGinness Hills, contributing to their productivity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect