Fragments of bioclastic "trilobite- trash" bed typical of the lower part of the Carrara Formation. Death Valley National Park, California. Circa 1960.

Fragments of bioclastic "trilobite- trash" bed typical of the lower part of the Carrara Formation. The trilobites are olenellids. Death Valley National Park, California. Circa 1960. Figure 19, U.S. Geological Survey Professional Paper 494-A.

Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Death Valley National Park, Death Valley National Park, California, Hunt, C.B. Collection, National Parks, Photographers, All tags... photo print, Fewer tags

West flank of the Black Mountains north of peak 4214, just south of Sheep Canyon in the lower right. Death Valley National Park, California. 1957.

Death Valley National Park, California. West flank of the Black Mountains north of peak 4214, just south of Sheep Canyon in the lower right. The skyline ridge dropping to Death Valley, left and center, is the approximate profile of the surface of the Copper Canyon turtle back and is underlain near the crest by broadly arched metasedimentary rocks that grade into metadiorite near Sheep Canyon. 1957. Figure 3, U.S. Geological Survey Professional paper 413.

Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Black Mountains, California, Death Valley National Park, National Parks, photo print

Death Valley National Park, California. Three pine trees growing on the Panamint Range are distributed altitudinally. Circa 1960.

Death Valley National Park, California. Three pine trees growing on the Panamint Range are distributed altitudinally. On the highest point of the range, at Telescope Peak, is bristlecone pine, also known as foxtail pine (Pinus aristata), characterized by needles in bundles of five and cones with a long bristle-like prickle (right). Also on the summit, but at somewhat lower altitudes, is the limber pine (Pinus flexilis), also characterized by needles in bundles of five but distributed differently on the branchlets, and the cones are without prickles (center). At still lower altitudes, down to about 5,500 feet, is the pinyon pine (Pinus monophylla), characterized by single needles and by small cones yielding edible...

Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Death Valley National Park, Hunt, C.B. Collection, National Parks, Photographers, photo print

Death Valley National Park, California. Salt saucers, climax of the salt wedges and polygonally cracked salt crusts.

Death Valley National Park, California. Salt saucers, climax of the salt wedges and polygonally cracked salt crusts. The secondary cracks have so widened, the crusts have been thrust outward. These were old enough when photographed to have collected some silt (dark surface in lower left), and the bottom of each saucer is pierced by one or more drain holes. These saucers, one mile west of Badwater, were destroyed by solution when flooded in 1969. Figure 57, U.S. Geological Survey Professional paper 494-B. Drawing of photo.

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Death Valley National Park, California. Shoreline at the foot of the fan north of Coffin Canyon. Circa 1960.

Death Valley National Park, California. Shoreline at the foot of the fan north of Coffin Canyon. The greater salt content of the ground below the shoreline helps retain moisture and appears dark. Circa 1960. Figure 61, U.S. Geological Survey Professional paper 494-A.

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Death Valley National Park, California. 1960.

Death Valley National Park, California. 1960.

Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Death Valley National Park, National Parks, Photographers, Ross, R.J. Collection, color transparency (slides)

Footprints of four-toed birds. Death Valley National Park, California. 1938.

Footprints of four-toed birds, pencil points at the end of the fourth toe, in Furnace Creek Sandstone. Death Valley National Park, California. 1938.

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Death Valley National Park, California. Panamint Mountains, viewed from Mormon Point. 1950.

Death Valley National Park, California. Panamint Mountains, viewed from Mormon Point. December 1950.

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Death Valley National Park, California. Bedded dolomite in Virgin Wash. 1950.

Death Valley National Park, California. Bedded dolomite in Virgin Wash. December 1950.

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Narrow entrance in main chamber of Devils Hole, Death Valley National Park, Nevada. 1986.

Fig. 12. Narrow entrance in main chamber of Devils Hole (above and slightly to right of F in Fig. 4) that allows access to Browns Room. Nylon safety guideline is just to left of diver. White PVC case attached to scuba tank is housing for battery pack to power helmet-mounted dive light. Depth about 80 ft (24.4 m) below water surface. 1986. Additional information: Devils Hole Picture Story Principal investigator: Isaac J. Winograd, U.S. Geological Survey (retired). Principal research dive team: Alan C. Riggs, U.S. Geological Survey (retired); Peter T. Kolesar, Professor Emeritus, Utah State University, Logan, Utah; and Ray J. Hoffman, U.S. Geological Survey (retired). Description of Figures All of the above-water...

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Funeral Fanglomerate faulted against borate clays. Death Valley National Park, California. 1938.

Funeral Fanglomerate faulted against borate clays of the Furnace Creek Formation 2 miles south of Zabriskie Point. Death Valley National Park, California. 1938.

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Death Valley National Park, California. Platy Precambrian schist in the south fork of Galena Canyon. Circa 1960.

Death Valley National Park, California. Platy Precambrian schist in the south fork of Galena Canyon. Plates are about vertical and trend northwest. Circa 1960.

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Basalt flows and dikes in Furnace Creek Clays. Death Valley National Park, California. 1938. (Panorama in two parts.)

Basalt flows and dikes in Furnace Creek Clays cut off by the fault crossing from lower right to center left and, in turn, cut off by the overthrust fault following the base of the ridge capped by colemanite, north of 20 Mule Team Canyon. Death Valley National Park, California. 1938. Panorama in two parts. Photo 50 and 51. (see ttp00051)

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Death Valley National Park, California. Natural Bridge on Tucki Mountain. 1960

Death Valley National Park, California. Natural Bridge on Tucki Mountain. C.B. Hunt. 1960

Categories: Image; Tags: Death Valley National Park, Factory Butte Coal Mine, Photographers, Ross, R.J. Collection, color transparency (slides)

Cambrian formations at the mouth of Death Valley Canyon. Death Valley National Park, California. Circa 1960.

Death Valley National Park, California. Cambrian formations at the mouth of Death Valley Canyon. View is north. In the left foreground is Zabriskie Quartzite (Cz). To the right of this and below the flat fault are 1,000 feet of shale and limestone of the Carrara Formation (Cc). The upper plate of the fault is mostly thick-bedded dolomite belonging to the Bonanza King and Nopah Formations (Cbn). Circa 1960. Figure 18, U.S. Geological Survey Professional Paper 494-A.

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Mercury Bioaccumulation in US National Parks Using Dragonfly Larvae as Biosentinels, 2009-2018

Comma-separated values (.csv) files containing data related to a National-scale assessment of mercury bioaccumulation in the US National Parks using dragonfly larvae as biosentinels through a citizen science framework.

Categories: Data; Tags: Acadia National Park, Allegheny Portage Railroad National Historic Site, Apostle Islands National Lakeshore, Appomattox Court House National Historical Park, Aquatic Biology, All tags... Battle Creek Cypress Swamp, Bear Creek Lake Park, Bear Meadows Natural Area, Big Bend National Park, Big Cypress National Park, Big Thicket National Preserve, Buffalo National River, Cape Cod National Seashore, Capitol Reef National Park, Carl Sandburg Home National Historic Site, Channel Islands National Park, Chickasaw National Recreation Area, Colorado National Monument, Congaree National Park, Cuyahoga Valley National Park, Death Valley National Park, Delaware Water Gap National Recreation Area, Denali National Park and Preserve, Devils Tower National Monument, East Inlet Natural Area-Connecticut Lakes Nature Preserve, Ecology, Environmental Health, Everglades National Park, Fort Worth Nature Center and Refuge National Natural Landmark, Gateway National Recreation Area, Glacier Bay National Park & Preserve, Glacier National Park, Glen Canyon National Recreation Area, Golden Gate National Recreation Area, Grand Canyon National Park, Grand Portage National Monument, Grand Teton National Park, Great Basin National Park, Great Sand Dunes National Park, Great Smoky Mountains National Park, Gulf Islands National Seashore, Hawaii Volcanoes National Park, Homestead National Historic Site, Hot Springs National Park, Indiana Dunes National Park, Isle Royale National Park, Jean Lafitte National Historical Park and Preserve, John Day Fossil Beds National Monument, Katahdin Woods and Waters National Monument, Katmai National Park and Preserve, Kenilworth Park & Aquatic Gardens, Klondike Gold Rush National Historical Park, Knife River Indian Villages National Historic Site, Lake Clark National Park, Lassen Volcanic National Park, Lewis and Clark National Historical Park, Mammoth Cave National Park, Marsh-Billings-Rockefeller National Park, Maurice National Wild & Scenic River, Minute Man National Historical Park, Mississippi National River & Recreation Area, Monocacy National Battlefield, Montezuma Castle National Monument, Mount Rainier National Park, Natchez Trace Parkway and National Scenic Trail, Niobrara National Scenic River, North Cascades National Park, Olympic National Park, Oregon Caves National Monument, Ozark National Scenic Riverway, Padre Island National Seashore, Pictured Rocks National Lakeshore, Pinnacles National Park, Pipestone National Monument, Prince William Forest Park, Pu'ukohola Heiau National Historic Site, Redwood National Park, Richmond National Battlefield Park, Rock Creek Park, Rocky Mountain National Park, Roosevelt-Vanderbilt National Historic Sites, Saguaro National Park, Saint Croix National Scenic Riverway, Saint-Gaudens National Historic Site, San Juan Island National Historical Park, Santa Monica Mountains National Recreation Area, Saugus Iron Works National Historic Site, Sequoia & Kings Canyon National Parks, Shenandoah National Park, Sleeping Bear Dunes National Lakeshore, Tallgrass Prairie National Preserve, Timucuan Ecological Historic Preserve, Tumacacori National Historical Park, Tuzigoot National Monument, USGS Science Data Catalog (SDC), Upper Delaware Scenic and Recreational River, Valles Caldera National Preserve, Voyageurs National Park, Water Quality, Weir Farm National Historic Site, Wildlife Biology, Wind Cave National Park, Women’s Rights National Historical Park, Yellowstone National Park, Yosemite National Park, Zion National Park, biota, environment, mercury contamination, Fewer tags

Casts of bird footprints. Death Valley National Park, California. 1938.

Casts of bird footprints in an overhanging sandstone ledge northeast of Park Village. Death Valley National Park, California. 1938.

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Death Valley National Park, California. Stands of mesquite around the Death Valley salt pan are dying back.

Death Valley National Park, California. Stands of mesquite around the Death Valley salt pan are dying back. The deterioration of the mesquite appears to be general, in part perhaps because of cutting but probably mostly because the water table has been dropping and the ground water is becoming increasingly saline. View is along Salt Creek east of the Salt Creek Hills.

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Erosion of clays of Funeral Fanglomerate. Death Valley National Park, California. 1938.

Erosion of clays of Funeral Fanglomerate, 2 or 3 miles north of Park Village. Death Valley National Park, California. 1938.

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Cliffs formed by rainwash. Death Valley National Park, California. 1938.

Cliffs formed by rainwash on basaltic fanglomerate in the Furnace Creek Formation 1 mile south of Furnace Creek Inn. Death Valley National Park, California. 1938.

Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Death Valley National Park, Death Valley National Park, California, National Parks, Photographers, Thayer, T.P. Collection, All tags... photo print, Fewer tags