Joints, fissures, and voids in rhyolite welded ash-flow tuff at Teton damsite, Idaho
Several kinds of joints, fissures, and voids are present in densely welded rhyolite ash-flow tuff at Teton damsite. Older fissures and voids probably were formed in the ash-flow sheet during secondary flowage, which probably was caused by differential compaction or settling over irregular topography. The younger, more abundant fissures are mostly steep cooling joints that probably have been opened farther by horizontal tectonic extension and gravitational creep, perhaps aided by lateral stress relief.
Citation Information
Publication Year | 1977 |
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Title | Joints, fissures, and voids in rhyolite welded ash-flow tuff at Teton damsite, Idaho |
DOI | 10.3133/ofr77211 |
Authors | Harold J. Prostka |
Publication Type | Report |
Publication Subtype | USGS Numbered Series |
Series Title | Open-File Report |
Series Number | 77-211 |
Index ID | ofr77211 |
Record Source | USGS Publications Warehouse |