Back to Search
Start Over
The smectite to corrensite transition: X-ray diffraction results from the MH-2B core, western Snake River Plain, Idaho, USA
- Source :
- Clay Minerals. 51:691-696
- Publication Year :
- 2016
- Publisher :
- Mineralogical Society, 2016.
-
Abstract
- The MH-2B borehole, a part of Project HOTSPOT, was drilled to a depth of 1821 m in late Cenozoic basalts, hyaloclastites and interbedded lake sediments, on the Mountain Home Air Force Base in southern Idaho, USA. Drillers encountered hot water (145°C) under artesian pressure at 1745 m in a narrow zone of highly fractured rock associated with a major sub-surface fault. X-ray diffraction (XRD) analysis identified corrensite (with and without smectite) between 1700 and 1800 m, but only smectite above 1700 m and below 1800 m. This corrensite horizon contains a relatively narrow zone of fracturing and hot artesian water near its centre but for the most part occurs in relatively massive basalt flows. No evidence was found for randomly interstratified chlorite-smectite.
- Subjects :
- Basalt
010504 meteorology & atmospheric sciences
Artesian aquifer
Borehole
Geochemistry
010502 geochemistry & geophysics
01 natural sciences
Geochemistry and Petrology
X-ray crystallography
Hotspot (geology)
Clay minerals
Geomorphology
Cenozoic
Geology
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 14718030 and 00098558
- Volume :
- 51
- Database :
- OpenAIRE
- Journal :
- Clay Minerals
- Accession number :
- edsair.doi...........6291d349e3ed80e50815da26a83e8e8c