Geologists using a thermocouple probe to measure pumice slope temperature. Mount St. Helen, Skamania County, Washington. 1980.
Dates
Date Taken
1980-05-30
Summary
Slide description and index card: Mount St. Helens pyroclastic deposits. A, Geologists R.P. Hoblitt of the USGS (left) and Edward Graeber, Jr., of Sandia Laboratories (right) use of thermocouple probe to measure the temperature in a pumice slope north of Mount St. Helens. Although the pumice at the surface was cool enough to walk on, at a depth of a few inches it was hot enough to boil water. Skamania County, Washington. May 30, 1980. (Photo by Terry Leighley, Sandia Laboratories). Published as Figure 38-A in U.S. Geological Survey. Professional Paper 1949. 1982.
Summary
Slide description and index card: Mount St. Helens pyroclastic deposits. A, Geologists R.P. Hoblitt of the USGS (left) and Edward Graeber, Jr., of Sandia Laboratories (right) use of thermocouple probe to measure the temperature in a pumice slope north of Mount St. Helens. Although the pumice at the surface was cool enough to walk on, at a depth of a few inches it was hot enough to boil water. Skamania County, Washington. May 30, 1980. (Photo by Terry Leighley, Sandia Laboratories).
Published as Figure 38-A in U.S. Geological Survey. Professional Paper 1949. 1982.
Available in the U.S. Geological Survey Denver Library Photographic Collection, Mount St. Helens Superset album, Photos stacks slides collection area.
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