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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
Filter Total Items: 6144
Some black-footed ferret research needs Some black-footed ferret research needs
No abstract available.
Authors
R.C. Erickson
Stratigraphic studies: Part A: basalt stratigraphy of southern Mare Serenitatis Stratigraphic studies: Part A: basalt stratigraphy of southern Mare Serenitatis
Mare Serenitatis has long been noted for its conspicuous dark border (fig. 29-1). The Apollo 17 metric photographs traverse this border in southern Mare Serenitatis and show clearly superposition relationships among the mare and mare-related stratigraphic units. These photographs, together with full-Moon photographs, albedo measurements, and color information (table 29-I), provide the...
Authors
K. Howard, M. Carr, W.R. Muehlberger
Stratigraphic studies: Part B: geologic setting of the dark mantling material in the Taurus-Littrow region of the Moon Stratigraphic studies: Part B: geologic setting of the dark mantling material in the Taurus-Littrow region of the Moon
A dark-colored surficial deposit covers lowlands and highlands along the southeastern margin of the Serenitatis basin. Sampling of this material was a major exploration objective of the Apollo 17 mission. Since completion of the mission, the dark mantle has been the subject of considerable controversy, inasmuch as no obvious stratified deposit was found in the landing area. Yet the...
Authors
Baerbel Lucchitta
Stratigraphic studies: Part C: relative ages of some near-side mare units based on Apollo 17 metric photographs Stratigraphic studies: Part C: relative ages of some near-side mare units based on Apollo 17 metric photographs
The lunar maria formed at different times and in multiple stages of extrusion. An understanding of their evolution is essential in placing the Apollo samples in a regional context and in interpreting the regional geology of a vast part of the lunar surface.
Authors
Joseph Boyce, Arthur Dial
Stratigraphic studies: Part D: geologic map of the northern Crisium region Stratigraphic studies: Part D: geologic map of the northern Crisium region
Apollo 17 metric photographs (fig. 29-26) provide the best available coverage for geologic interpretation of northern Mare Crisium and the northern Crisium basin. The area was covered previously by low-resolution telescopic and Lunar Orbiter IV photographs and by oblique, high-illumination, or low-resolution photographs from earlier Apollo missions. One region in particular, between...
Authors
Don Wilhelms
Surface electrical properties experiment Surface electrical properties experiment
The surface electrical properties (SEP) experiment was used to explore the subsurface material of the Apollo 17 landing site by means of electromagnetic radiation. The experiment was designed to detect electrical layering, discrete scattering bodies, and the possible presence of water. From the analysis of the data, it was expected that values of the electrical properties (dielectric...
Authors
Gene Simmons, David Strangway, Peter Annan, Richard Baker, Lawrence Bannister, Raymond Brown, William Cooper, Dean Cubley, Joseph deBettencourt, Anthony England, John Groener, Jin-Au Kong, Gerald LaTorraca, James Meyer, Ved Nanda, David Redman, James Rossiter, Leung Tsang, Joseph Urner, Raymond Watts
The black-footed ferret The black-footed ferret
No abstract available.
Authors
C. Hillman, R. Linder
The use of fish bioassays to determine the rate of deactivation of pesticides The use of fish bioassays to determine the rate of deactivation of pesticides
Abstract not submitted to date
Authors
L. Marking, C.R. Walker
Toxicity and persistence of mirex in birds Toxicity and persistence of mirex in birds
No abstract available.
Authors
W. Stickel, J.A. Galyen, R. Dyrland, D.L. Hughes
Volcanic studies: Part B: Mare Serenitatis cinder cones and terrestrial analogs Volcanic studies: Part B: Mare Serenitatis cinder cones and terrestrial analogs
Small volcanic cones with summit craters or breached walls occur in several areas on the Moon. Most of these features have basal diameters of approximately 1 to 2 km and probably are not more than a few hundred meters in height. None have been so clearly photographed, however, as those shown in Apollo 17 metric and panoramic camera coverage of the southeastern margin of the Serenitatis...
Authors
David Scott
Volcanic studies: Part E: Eratosthenian volcanism in Mare Imbrium: source of youngest lava flows Volcanic studies: Part E: Eratosthenian volcanism in Mare Imbrium: source of youngest lava flows
Orbital photographs taken at low-Sun illumination during both the Apollo 15 (ref. 30-14) and Apollo 17 missions have provided excellent data on the lava flows in the southwestern Mare Imbrium. These photographs have been used recently to present a detailed photogeologic evaluation of these flows and their role in mare volcanism of Eratosthenian age in the basin (ref. 30-15). Eruption of...
Authors
Gerald Schaber