The floor of Crater Lake, Oregon
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ID: 305806
1961
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Abstract
Soundings recently made of the floor of Crater Lake by the U.S. Coast and Geodetic Survey show a maximum depth of 1,932 ft. They reveal the presence of a submerged cone, 1 mi. across at the base and approximately 1,320 ft. high, from which flows spread southeastward to form an extensive lava plain. The soundings also reveal a submerged field of lava extending 2 mi. eastward from Wizard Island, a small mound protruding above its surface. Samples dredged from the flank of the cone consist of hypersthene-augite andesite; samples from the mound consist of vitrophyric hypersthene-hornblende dacite. Arcuate fault planes enclose the caldera, but no fault scarps cross the floor, and there are no signs of any explosion craters.
| Reference Key |
openalex_W2141596380
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|---|---|
| Authors | Howel Williams |
| Journal | american journal of science |
| Year | 1961 |
| DOI |
10.2475/ajs.259.2.81
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| URL | |
| Keywords | Keywords not found |
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