Images

Geologic map of the Wind River Range from Blackstone, 1993 (The Wind River Range, Wyoming: An Overview. Wyoming Geological Association. Jubilee Anniversary Field Conference Guidebook: Wyoming Geology, Past, Present, and Future. Pg. 121-140).

Porkchop Geyser erupting in August 1989.

Ice cone at Porkchop Geyser in March 1989.

Apollinaris Spring in 1987.  The spring was modified in 1925 so that water would flow through pipes to be emitted from a rock wall.  Yellowstone National Park photo by Jim Peaco.

Muddy thermal discharge (foreground) near Congress Pool (middle ground) in Norris Geyser Basin following the June 30, 1975, magnitude-6 Yellowstone National Park earthquake,  NPS photo by Rick Hutchinson.

Map: Index map showing locations of 1967–1968 research drill holes in Yellowstone National Park. Taken from USGS Bulletin 1967.

Photo of damage to the Mammoth-Norris highway, just south of Mammoth Hot Springs, caused by the June 30, 1975, magnitude-6 earthquake.  Haynes Inc. photo for the Deseret News.

Gibbon River in Gibbon Meadows immediate following the June 30, 1975, magnitude-6 Yellowstone National Park earthquake.  The muddy color is due to increased sediment load.  NPS photo by Rick Hutchinson.

An example Correlation of Map Units chart from the Surficial Geologic Map of Yellowstone National Park (U.S. Geological Survey, 1972) that demonstrates a typical classification scheme for surficial units.

Silicified logs of Queen's Laundry bathhouse

Seismic geyser in Yellowstone’s Upper Geyser Basin during an eruption. Based on the study of George Marler and USGS scientist Donald E.

Eruptions from drill rods during research drilling in Yellowstone National Park, 1967–1968. Left panel shows initial explosive eruption of water-steam mixture from open drill pipe in drill hole Y-5 (Rabbit Creek) on August 20, 1967.

Bob Fournier (left) and Don White (right) at the Y3 drilling site in Pocket Basin adjacent to Ojo Caliente, Lower Geyser Basin, Yellowstone National Park, in 1967.  USGS Photo.

This orthophoto of Pocket Basin, a hydrothermal explosion crater in Yellowstone National Park's Lower Geyser Basin, was created from aerial photos taken in 1965 that were corrected to have uniform scale for use in geologic mapping.

Kaleidoscope Geyser in the Lower Geyser Basin. George D. Marler and Donald E.

Top: the first thermal infrared images of Yellowstone (1961).  Warm areas are brighter; cold areas are darker.  These images were published in: McLerran, J.H. and Morgan, J.O. (1965) Thermal mapping of Yellowstone National Park.

View of Lower Geyser Basin. Note active thermal pools (Great Fountain Geyser) in the foreground with thermal grasslands—kept treeless by hot soils—and lodgepole pine forest in the distance. Photo by George Marler, 1959.

Aerial view of Black Opal Pool, Black Diamond Pool, and part of Wall Pool, all in Biscuit Basin, Yellowstone National Park, taken in 1959 sometime after the Hebgen Lake earthquake (which occurred on August 17 of that year).

Rockslide damage to the Golden Gate area near Mammoth Hot Springs, Yellowstone National Park, as a result of the 1959 Hebgen Lake earthquake.

Sapphire Pool, in the Upper Geyser Basin, erupting after the 1959 Hebgen Lake earthquake.

George Marler taking the temperature of a pool at the base of Giant Geyser in the 1950s. Photo from the Yellowstone Research Library.