Fluid-inclusion evidence for previous higher temperatures in the SUNEDCO 58-28 drill hole near Breitenbush hot springs, Oregon
By: Keith E. Bargar
Edited by: Anon
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Abstract
The SUNEDCO 58-28 geothermal exploration drill hole was completed in 1981 to a depth of 2, 457 m near Breitenbush Hot Springs in the Western Cascade Mountains of northern Oregon. One hundred thirteen liquid-rich fluid inclusions (mostly secondary) were analyzed from drill cuttings samples of hydrothermal quartz, calcite, and anhydrite, as well as primary quartz phenocrysts. Except for one hydrothermal quartz specimen, minimum homogenization temperature (Th) measurements of fluid inclusions plot very close to the present measured temperatures for the drill hole. Fluid-inclusion data from near the bottom of the drill hole suggest that these rocks were altered by water of significantly greater salinity than Breitenbush Hot Springs water.
Suggested Citation
Bargar, K.E., 1993, Fluid-inclusion evidence for previous higher temperatures in the SUNEDCO 58-28 drill hole near Breitenbush hot springs, Oregon, in Transactions - Geothermal Resources Council, v. 17, Burlingame, CA, USA, 10 October 1993 through 13 October 1993, p. 83-89.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Fluid-inclusion evidence for previous higher temperatures in the SUNEDCO 58-28 drill hole near Breitenbush hot springs, Oregon |
| ISBN | 0934412715 |
| Volume | 17 |
| Year Published | 1993 |
| Language | English |
| Publisher | Publ by Geothermal Resources Council |
| Publisher location | Davis, CA, United States |
| Larger Work Title | Transactions - Geothermal Resources Council |
| First page | 83 |
| Last page | 89 |
| Conference Title | Proceedings of the 1993 Annual Meeting on Utilities and Geothermal: An Emerging Partnership |
| Conference Location | Burlingame, CA, USA |
| Conference Date | 10 October 1993 through 13 October 1993 |