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Album caption and index card: Slide mass at mouth of Madison Canyon. Top of scar is at crest of grassy ridge in right center. Madison River terraces in foreground. Montana earthquake area. Madison County, Montana. August 1959.
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Album caption and index card: Trees and coarse gneiss fragments on north part of slide mass. Montana earthquake area. Madison County, Montana. August 1959.
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Album caption and index card: Slower part of slide mass forming south side of central trough. East edge of slide scar in background. Partly armored spillway in foreground. Montana earthquake area. Madison County, Montana. August 1959.
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Album caption: Canyon Cliffs, YSNP. Index card: Grand Canyon and Lower Falls of the Yellowstone River, as viewed upstream (southwest) from Artists Point on the south rim. The yellow-hued rocks lining the canyon walls are soft, hydrothermally altered rhyolite lavas. The rocks at the bring of the falls consist of less altered and therefore more resistant rhyolites. The falls, 309 feet high, formed at the contact between the hard and soft rhyolite units. Yellowstone National Park, Wyoming. 1970. Published as Figure 41 in U.S. Geological Survey. Bulletin 1347. 1971.
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Album caption: Hebgen Dam after quake (air view). Index card: Hebgen Dam after earthquake. Montana earthquake area. Gallatin County, Montana. August 1959. (Aerial view).
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Album caption and index card: Grand Canyon and Lower Falls of the Yellowstone River, as viewed upstream (southwest) from Artists Point on the south rim. The yellow-hued rocks lining the canyon walls are soft, hydrothermally altered rhyolite lavas. The rocks at the brink of the falls consist of less altered and therefore more resistant rhyolites. The falls, 309 feet high, formed at the contact between the hard and soft rhyolite units. Yellowstone National Park, Wyoming. 1970.
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Album caption and index card: Common kinds of thermal features in Yellowstone National Park. Hot springs and terraces colored by algae at Mammoth Hot Springs. Yellowstone National Park, Wyoming. 1970. Published as Figure 43-A in U.S. Geological Survey. Bulletin 1347. 1971.
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Crossing the Canyonlands section of the Colorado Plateau, the Colorado and Green Rivers are in deep colorful canyons in Jurassic, Triassic Permian and Pennsylvanian rocks. Looking up the Colorado River at The Loop about 6 miles above the junction of the Green River. The gorge is about 500 feet deep; the broad bench is underlain by the Permian (Cutler Formation), and no river gravels were found on it. In the distance, about 8 miles away, are the cliffs of the Triassic and Jurassic rocks, about 1,200 feet high. In early Miocene (about 25 million years ago) much or most of the canyonlands still were covered by Cretaceous shale (Mancos Shale) River deposits correlated with glacial deposits in the La Sal Mountains indicate...
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Album caption and index card: Closeup view of intrusive igneous rock (diorite) from Electric Peak stock in the Gallatin Range is pictures in photo no. 745 (sjr00745). The rock is composed chiefly of light-colored quartz and feldspar and dark-colored iron and magnesium silicate minerals. Yellowstone National Park, Wyoming. 1970. (Specimen). Published as Figure 20 in U.S. Geological Survey. Bulletin 1347. 1971.
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Album caption and index card: Massive beds of breccia of the Absaroka volcanic rocks along the road north of Dunraven Pass. This breccia formed part of a steep-sided volcanic cone, of which Mount Washburn is a remnant. Closeup view shows very coarse character of the breccia, with large rock fragments imbedded in fine ash, dust and sand. Nearly all the rocks are of andesitic composition, consisting chiefly of feldspar and pyroxene. The most common colors are medium to fairly dark shades of brown, red, purple, and gray. Yellowstone National Park, Wyoming. 1970. Published as Figure 17 (lower photo) in U.S. Geological Survey. Bulletin 1347. 1971.
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Album caption and index card: The ring fractures eventually tapped the magma chamber, the uppermost part of which contained a high proportion of dissolved gases. With the sudden release of pressure, tremendous amounts of hot gases and molten rock were erupted almost instantly. The liquid solidified into pumice, ash, and dust and it was blown out. Some of the dust and ash was blown high into the air and carried along by the wind, but much of the debris moved outward across the landscape as vast ash flows, rapidly covering thousands of square miles. Yellowstone National Park, Wyoming. 1970. Published as Figure 23-B in U.S. Geological Survey. Bulletin 1347. 1971.
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Album caption and index card: Lamar River. View downstream (west) along the Lamar River in Lamar Canyon. The rocks along the river banks are coarsely banded Precambrian gneisses more than 2.5 billion years old, some of the oldest rocks in Yellowstone National Park. Yellowstone National Park, Wyoming. 1970. Published as Figure 7 (upper photo) in U.S. Geological Survey. Bulletin 1347. 1971.
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Album caption: Flow structures in slightly eroded front of rhyolite flow, Firehole Canyon. Montana earthquake area. August 1959. Handwritten notes on album caption: Yellowstone National Park, Wyoming. No index card.
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Album caption and index card: Yellowstone tuff at Golden Gate. The rocks consist of layered ash-flow tuff; the height of the cliff is about 200 feet. Yellowstone National Park, Wyoming. 1970.
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Album caption and index card: Mount Everts, as viewed toward the northeast from south of Mammoth Hot Springs. The mountain, about 1,500 feet above the plain is formed by gently tilted sedimentary rocks of Cretaceous age, chiefly sandstone and shale of the Frontier Formation, Cody, and Everts Formations. The conspicuous rim rock at the top of the mountain to the right is composed of the Yellowstone Tuff. When the tuff was deposited (by explosive eruptions from the south), there was no valley along the edge of the mountain. Yellowstone National Park, Wyoming. 1970. Note: Photos sjr00642, sjr00643, and sjf00644 form a panorama.
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Album caption and index card: Giant petrified tree trunks in Yellowstone's fossil forest. The enclosing rocks, part of the Absaroka volcanic sequence that forms Specimen Ridge, are approximately 50 million years old. Many of the tree trunks are still upright, having been smothered and buried in their original positions by breccia, ash, and dust from nearby volcanoes. It is evident that more than one "forest" is represented in this view. Professor Erling Dorf, of Princeton University, counted a total of 27 different forest layers in the rocks now exposed at Specimen Ridge. He also determined that the most common kinds of trees were sycamore, walnut, magnolia, chestnut, oak, redwood, maple, and dogwood. The nearest...
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Album caption and index card: Watkins Creek fan showing innundation. Submerged shore line along northwest arm of Hebgen Lake. Montana earthquake area. Gallatin County, Montana. August 1959. (Aerial view).
map background search result map search result map Intrusive igneous rock (diorite) from Electric Peak stock in the Gallatin Range. Yellowstone National Park, Wyoming. 1970. Mount Everts, viewed from the southwest from south of Mammoth Hot Springs. Yellowstone National Park, Wyoming. 1970. Lamar River. Downstream (west) along the Lamar River in Lamar Canyon. Yellowstone National Park, Wyoming. 1970. Old Faithful Geyser in Upper Geyser Basin in eruption. Yellowstone National Park, Wyoming. 1970. Massive beds of breccia of the Absaroka volcanic rocks along the road north of Dunraven Pass. Yellowstone National Park, Wyoming. 1970. 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. Giant petrified tree trunks in Yellowstone's fossil forest. Yellowstone National Park, Wyoming. 1970. Grand Canyon and Lower Falls of the Yellowstone River. Yellowstone National Park, Wyoming. 1970. Flow structures in slightly eroded front of rhyolite flow, Firehole Canyon. Yellowstone National Park, Wyoming. 1959. Yellowstone tuff at Golden Gate. Yellowstone National Park, Wyoming. 1970. Grand Canyon and Lower Falls of the Yellowstone River, as viewed upstream (southwest) from Artists Point on the south rim. Yellowstone National Park, Wyoming. 1970. Hot springs and terraces colored by algae at Mammoth Hot Springs. Yellowstone National Park, Wyoming. 1970. Aerial view of Hebgen Dam after earthquake. Hebgen Lake, Gallatin County, Montana Earthquake. 1959. Madison slide and Quake Lake. Hebgen Lake, Gallatin County, Montana Earthquake. 1959. Madison slide and Quake Lake. Hebgen Lake, Gallatin County, Montana Earthquake. 1959. Trees and coarse gneiss fragment on north part of slide mass. Madison County, Montana. 1959. Slower part of slide mass forming south side of central trough. Madison County, Montana. 1959. Slide mass at mouth of Madison Canyon. Madison County, Montana. 1959. Watkins Creek fan showing innundation. Gallatin County, Montana. 1959. Aerial view of Hebgen Dam after earthquake. Hebgen Lake, Gallatin County, Montana Earthquake. 1959. Madison slide and Quake Lake. Hebgen Lake, Gallatin County, Montana Earthquake. 1959. Madison slide and Quake Lake. Hebgen Lake, Gallatin County, Montana Earthquake. 1959. Watkins Creek fan showing innundation. Gallatin County, Montana. 1959. Trees and coarse gneiss fragment on north part of slide mass. Madison County, Montana. 1959. Slower part of slide mass forming south side of central trough. Madison County, Montana. 1959. Slide mass at mouth of Madison Canyon. Madison County, Montana. 1959. Intrusive igneous rock (diorite) from Electric Peak stock in the Gallatin Range. Yellowstone National Park, Wyoming. 1970. Mount Everts, viewed from the southwest from south of Mammoth Hot Springs. Yellowstone National Park, Wyoming. 1970. Lamar River. Downstream (west) along the Lamar River in Lamar Canyon. Yellowstone National Park, Wyoming. 1970. Old Faithful Geyser in Upper Geyser Basin in eruption. Yellowstone National Park, Wyoming. 1970. Massive beds of breccia of the Absaroka volcanic rocks along the road north of Dunraven Pass. Yellowstone National Park, Wyoming. 1970. 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. Giant petrified tree trunks in Yellowstone's fossil forest. Yellowstone National Park, Wyoming. 1970. Grand Canyon and Lower Falls of the Yellowstone River. Yellowstone National Park, Wyoming. 1970. Flow structures in slightly eroded front of rhyolite flow, Firehole Canyon. Yellowstone National Park, Wyoming. 1959. Yellowstone tuff at Golden Gate. Yellowstone National Park, Wyoming. 1970. Grand Canyon and Lower Falls of the Yellowstone River, as viewed upstream (southwest) from Artists Point on the south rim. Yellowstone National Park, Wyoming. 1970. Hot springs and terraces colored by algae at Mammoth Hot Springs. Yellowstone National Park, Wyoming. 1970.