Images

Studebaker Ridge formed during the Tertiary geologic time period (65 million to 2.6 million years ago). The pyroclastic surge from the May 18, 1980 eruption destroyed the trees on the ridge.

Summit region (Kalama age–1479 to 1720 C.E.) of Mount St. Helens looking northeast. Spirit Lake and Mount Adams in background. September 28, 1979.

Worm Complex on the southeast flank of Mount St. Helens—Middle Kalama lava flows in center of image. Photo from September 28, 1979. Click to view larger image.

Photograph from summit of San Jacinto Peak looking north across San Gorgonio Pass toward San Gorgonio Mountain. San Gorgonio River and Interstate Highway 10 traverse the Pass lowland; the Whitewater River drains the San Bernardino Mountains and flows eastward into the Salton Trough.

(Left) Aerial photograph of the Pāhala area, on the southern side of the Island of Hawaiʻi, taken on December 11, 1976. (Right) The backside of the same photo showing labeled field locations, marked with a pinhole through the photograph, which correspond to the geologist’s field notes. 

Meteor Crater formed approximately 50,000 years ago by the impact of a 100,000-ton iron-nickel meteorite, ~30 m in diameter, which struck at an approximate speed of 12-20 km/sec.

Morning Glory Pool used to be clear blue in color, as shown in the historic undated photo on the left (National Park Service photo by Rentchler).

Mount Konocti, a mostly dacitic composite cone, on the western shore of Clear Lake, California. Thurston Lake is in the foreground.

A M 7.7 earthquake on November 29, 1975, was located beneath the south flank of Kīlauea.

At 04:48 HST that morning, a magnitude-7.7 earthquake shook the island and generated a local tsunami that killed 2 people. Strong shaking from the earthquake produced damage at many locations on the Island of Hawai‘i. Within Hawai‘i Volcanoes National Park, sections of Crater Rim Drive (shown in this photo) cracked, some slumped toward the crater.

Ground cracks along Crater Rim Drive in Hawai‘i Volcanoes National Park caused by the M 7.7 earthquake on November 25, 1975. The cracks resulted from slumping of the ground toward the rim of Kīlauea Crater, the edge of which is left of the guardrails.

Example of the Landsat 1-5 MSS Collection 2 level-1 product. This Landsat 1 image was acquired on June 26, 1974 near Fallon, Nevada and is shown as a false color composite using the near-infrared, red, and green bands (bands 3,2,1).

Warren "Buz" Brown making second-order measurements using a Kern theodolite. The blind is to prevent temperature variations from affecting the instrument.

Warren "Buz" Brown making second-order measurements using a Kern theodolite. The blind is to prevent temperature variations from affecting the instrument.

U.S. Geological Survey streamflow-gaging station 08116650 Brazos River near Rosharon, Texas, looking upstream from Farm-to-Market Road (FM) 1462 bridge, August 28, 1973.
USGS SIR 2009–5174

Generalized geologic map of the Eocene Absaroka volcanic field (modified from Smedes and Prostka, 1972 and “Geology of Wyoming”).

Harrison H. Schmitt during the Apollo 17 mission.

This is a false-colored-composite satellite image of Great Salt Lake, Sept 1972. The vegetation appears red.

As erupting fissures migrated down Kīlauea's southwest rift zone in September 1971 for the first time in 52 years, many spectators hiked into the Ka‘ū Desert for a closer view of the rare event. Hawai‘i Volcanoes National Park rangers patrolled the area on horseback to keep people a safe distance from the lava fountains. Photo courtesy of NPS.

NASA image AS15-92-12424: Dave Scott’s photograph of Jim Irwin digging a trench to sample the lunar regolith during the second EVA of Apollo 15.  The trench was dug down to the level at which it became much harder to remove. 

NASA Image AS15-92-12439: Dave Scott’s photographic documentation of the trench dug.  Note the way the fine rock powder clumps together and can hold a vertical face.