Thomas J Casadevall
Tom Casadevall is a Scientist Emeritus with the Geology, Geophysics, and Geochemistry Science Center.
Science and Products
Filter Total Items: 39
Mt. St. Helens: evidence of increased magmatic gas component
This paper presents measurements of SO2 flux and ash leachate chemistry from Mt. St. Helens volcano during the period May 18 to July 22 which are in contrast to similar data from before May 18. Comparison of post-18 May SO2 data with similar data from other volcanoes leads to the conclusion that between 15 and 25 May the SO2 flux reached typical magmatic levels. Ash leachate chemistry...
Authors
R.E. Stoiber, S.N. Williams, L.L. Malinconico, D. C. Johnston, T. J. Casadevall
Textural and structural evidence for a predeformation hydrothermal origin of the Tungsten Queen Deposit, Hamme District, North Carolina
The Hamme tungsten district is composed of a series of steeply dipping quartz-wolframite veins in the Piedmont of North Carolina. Veins are concentrated near the border of the lower Paleozoic Vance County pluton, along its western contact with green-schist-facies metapelites and metavolcanic rocks of the Carolina slate belt. One of these quartz veins, the Snead-Walker, hosts the Tungsten...
Authors
M. P. Foose, J. R. Slack, T. J. Casadevall
A catalogue of drill core recovered from Kilauea Iki lava lake, from 1967 to 1979
The purpose of this report is to serve as a descriptive catalogue for drill core recovered from Kilauea Iki lava lake, from 1967 to 1979. Kilauea Iki lava lake was formed when lavas of the 1959 summit eruption were ponded in Kilauea Iki pit crater, a large pit crater at the extreme upper end of Kilauea's east rift zone (Fig. 1). This eruption is one of the best documented of Kilauean...
Authors
Rosalind L. Helz, Norman G. Banks, Thomas J. Casadevall, Richard S. Fiske, R. T. Moore
Science and Products
Filter Total Items: 39
Mt. St. Helens: evidence of increased magmatic gas component
This paper presents measurements of SO2 flux and ash leachate chemistry from Mt. St. Helens volcano during the period May 18 to July 22 which are in contrast to similar data from before May 18. Comparison of post-18 May SO2 data with similar data from other volcanoes leads to the conclusion that between 15 and 25 May the SO2 flux reached typical magmatic levels. Ash leachate chemistry...
Authors
R.E. Stoiber, S.N. Williams, L.L. Malinconico, D. C. Johnston, T. J. Casadevall
Textural and structural evidence for a predeformation hydrothermal origin of the Tungsten Queen Deposit, Hamme District, North Carolina
The Hamme tungsten district is composed of a series of steeply dipping quartz-wolframite veins in the Piedmont of North Carolina. Veins are concentrated near the border of the lower Paleozoic Vance County pluton, along its western contact with green-schist-facies metapelites and metavolcanic rocks of the Carolina slate belt. One of these quartz veins, the Snead-Walker, hosts the Tungsten...
Authors
M. P. Foose, J. R. Slack, T. J. Casadevall
A catalogue of drill core recovered from Kilauea Iki lava lake, from 1967 to 1979
The purpose of this report is to serve as a descriptive catalogue for drill core recovered from Kilauea Iki lava lake, from 1967 to 1979. Kilauea Iki lava lake was formed when lavas of the 1959 summit eruption were ponded in Kilauea Iki pit crater, a large pit crater at the extreme upper end of Kilauea's east rift zone (Fig. 1). This eruption is one of the best documented of Kilauean...
Authors
Rosalind L. Helz, Norman G. Banks, Thomas J. Casadevall, Richard S. Fiske, R. T. Moore