A comparison of gas geochemistry of fumaroles in the 1912 ash-flow sheet and on active stratovolcanoes, Katmai National Park, Alaska
Journal of Volcanology and Geothermal Research
By: D.S. Sheppard, C. J. Janik, and T. E. C. Keith
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Abstract
Fumarolic gas samples collected in 1978 and 1979 from the stratovolcanoes Mount Griggs, Mount Mageik, and the 1953-68 SW Trident cone in Katmai National Park, Alaska, have been analysed and the results presented here. Comparison with recalculated analyses of samples collected from the Valley of Ten Thousand Smokes (VTTS) in 1917 and 1919 demonstrates differences between gases from the short-lived VTTS fumaroles, which were not directly magma related, and the fumaroles on the volcanic peaks. Fumarolic gases of Mount Griggs have an elevated total He content, suggesting a more direct deep crustal or mantle source for these gases than those from the other volcanoes. ?? 1992.
Suggested Citation
Sheppard, D., Janik, C.J., Keith, T.E., 1992, A comparison of gas geochemistry of fumaroles in the 1912 ash-flow sheet and on active stratovolcanoes, Katmai National Park, Alaska: Journal of Volcanology and Geothermal Research, v. 53, no. 1-4, p. 185-197.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A comparison of gas geochemistry of fumaroles in the 1912 ash-flow sheet and on active stratovolcanoes, Katmai National Park, Alaska |
| Series title | Journal of Volcanology and Geothermal Research |
| Volume | 53 |
| Issue | 1-4 |
| Year Published | 1992 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Volcanology and Geothermal Research |
| First page | 185 |
| Last page | 197 |