Estimated temperatures for geothermal drill holes at Medicine Lake Volcano, northeastern California, based on fluid inclusion and hydrothermal mineralogy studies
Explore the source record for details and available documents.
Open-File Report↗
Geology topics
T. E. Keith
Publications and source records attributed to T. E. Keith.
Geology of east-central Alaska
Explore the source record for details and available documents.
Open-File Report↗
Hydrothermal mineralization in GEO N-1 drill hole, Newberry Volcano, Oregon
Explore the source record for details and available documents.
Open-File Report↗
Geochemical map of the Mount Hood Wilderness, Clackamas and Hood River counties, Oregon
Explore the source record for details and available documents.
Miscellaneous Field Studies Map↗
Aeromagnetic and Bouguer gravity maps of Mount Hood Wilderness, Clackamas and Hood River counties, Oregon
Explore the source record for details and available documents.
Miscellaneous Field Studies Map↗
A chemical study of serpentinization — Burro Mountain, California
Serpentinized dunites and harzburgites from the Burro Mountain peridotite show no change in the ratio of iron and magnesia to silica when compared with the same ratio for the unserpentinized equivalents. The mineral assemblage resulting from serpentinization consists of lizardite-chrysotile, brucite, and magnetite and is determined by the original bulk composition of the peridotite. The chemical and mineralogical data indicate that serpentinization proceeded under isochemical conditions except for the introduction of water into the peridotite. Expansion accompanies serpentinization because the serpentine products occupy a greater volume than the peridotite protolith. Tectonic emplacement of the Burro Mountain peridotite was facilitated by serpentinization and the attendant expansion.
California↗