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Krimmel, Robert M.

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Album caption: Aerial view of Mount St. Helens looking south directly toward the bulge. Loowit Glacier (A) and Goat Rocks (B). Numerous rock avalanches from Goat Rocks were triggered by earthquakes. Skamania County, Washington. May 17, 1980. (Photo no. 80S3-056 by R.M. Krimmel) Published as figure 31 in U.S. Geological Survey. Professional paper 1250. 1981. Index card unavailable.
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Album caption: Aerial view of Mount St. Helens looking west. Compare with photo no. 13 (msh_1250_00013). The crater has been much enlarged; as the bulge (at extreme right) has expanded, fracturing has become more extreme. Crater area has dropped relative to summit. Skamania County, Washington. May 17, 1980. ( Photo by R.M. Krimmel) Published as figure 22 in U.S. Geological Survey. Professional paper 1250. 1981. Index card unavailable.
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Album caption and index card: Mount St. Helens in eruption on May 18, 1980. Skamania County, Washington. May 18, 1980. Published on front cover of U.S. Geological Survey. Professional Paper 1250. 1980; opposite p. 1 in U.S. Geological Survey. Yearbook. 1980. Note: Similar to msh_pp1249_30_ct1200.
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Album caption: Aerial view of Mount St. Helens looking south, after the May 18 eruption. Compate with photo no. 24 (msh_1250_000024). Remaining lower part of Forsyth Glacier in left center. Loowit Glacier is completely gone. Many pyroclastic-flow deposit lobes can be seen in foreground. Windblown dust obscured some surface details. Skamania County, Washington. September 9, 1980. (Photo no. 80S10-113 by R.M. Krimmel) Published as figure 32 in U.S. Geological Survey. Professional paper 1250. 1981. Index card unavailable.
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Album caption: Aerial view of lower part of Shoestring Glacier, Mount St. Helens, showing narrow zones of marginal crevasses. Location of survey point Marmot indicated with black X. The approximate crater rim after May 18 is shown by dashed line. Surface of volcano was recently covered with ash. Regions where ash was dry appear light (highly reflective) compared to dark areas where ash was damp due to melting of underlying snow. Skamania County, Washington. May 17, 1980. (Identification on published photo only) (Photo by R. Krimmel) Portion enlarged as figure 438 in U.S. Geological Survey. Professional paper 1250. 1981. Index card unavailable.
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