Stacy, John R.

449 items:

Seismic Geyser in Upper Geyser Basin during an explosive thermal eruption. Yellowstone National Park, Wyoming. 1970. Album caption and index card: Seismic Geyser, during an explosive thermal eruption. Note the trees that have been killed by the heat and eruptive activity. According to George D. Marler of the U.S. National Park Service, this geyser developed from a crack caused by the Hebgen Lake Earthquake of August 17, 1959. Yellowstone National Park, Wyoming. 1970. Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Earthquakes, National Parks, Photographers, Stacy, J.R.Collection, Yellowstone National Park, All tags...
Hebgen Dam spillway. Gallatin County, Montana. 1959. Album caption and index card: Hebgen Dam spillway. Note curve in concrete core dam. Montana earthquake area. Gallatin County, Montana. August 1959. (Aerial view). Categories: Image; Tags: Earthquakes, Gallatin County, Montana, Hebgen Lake, Montana Earthquake 1959, Photographers, Stacy, J.R. Collection, All tags...
Caldera development - first of four schematic diagrams showing idealized stages in the development of the Yellowstone caldera 600,000 years ago. Yellowstone National Park, Wyoming. 1970. Album caption and index card: A large magma chamber formed deep within the earth, and the molten rock began to force its way slowly toward the surface. As it pushed upward, it arched the overlying rocks into a broad dome. The arching produced a series of concentric fractures, or a ring fracture zone, around the crest of the dome. The fractures extended downward toward the top of the magma chamber. Yellowstone National Park, Wyoming. 1970. Published as Figure 23-A in U.S. Geological Survey. Bulletin 1347. 1971. Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: National Parks, Photographers, Stacy, J.R.Collection, Yellowstone National Park, Yellowstone National Park Collection, All tags... photo print, Fewer tags
West along dam. Gallatin County, Montana. 1959. Album caption: West along dam. Montana earthquake area. Gallatin County, Montana. August 1959. (Aerial view). Index card unavailable. Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Earthquakes, Gallatin County, Montana, Hebgen Lake, Montana Earthquake 1959, Photographers, Stacy, J.R. Collection, All tags...
Air view of compressed fence and underthrust fault. Montana. 1959. Album caption and index card: Air view of compressed fence and underthrust fault. Montana earthquake area. Montana. August 1959. Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Earthquakes, Hebgen Lake, Montana Earthquake 1959, Montana (MT), Photographers, Stacy, J.R. Collection, All tags...

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