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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.
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Geologic setting of the lunar samples returned by the Apollo 11 mission Geologic setting of the lunar samples returned by the Apollo 11 mission
The Apollo 11 LM landed approximately 20 km south-southwest of the crater Sabine D in the southwestern part of Mare Tranquillitatis ( fig. 3-1 ). The landing site is 41.5 km north-northeast of the western promontory of the Kant Plateau (ref. 3-1 ), which is the nearest highland region. The Surveyor 5 spacecraft is approximately 25 km north-northwest of the Apollo 11 landing site, and the...
Authors
E.M. Shoemaker, N. G. Bailey, R. M. Batson, D.H. Dahlem, T.H. Foss, M. J. Grolier, E. N. Goddard, M. H. Hait, H. E. Holt, K.B. Larson, J. J. Rennilson, G. G. Schaber, D. L. Schleicher, H.H. Schmitt, R. L. Sutton, G.A. Swann, A. C. Waters, M.N. West
Lead shot poisoning of American birds Lead shot poisoning of American birds
No abstract available.
Authors
W. H. Stickel
No. 123. Puerto Rican parrot survey in eastern Puerto Rico No. 123. Puerto Rican parrot survey in eastern Puerto Rico
No abstract available.
Authors
C. B. Kepler
Prairie potholes from a continental viewpoint Prairie potholes from a continental viewpoint
No abstract available.
Authors
W.F. Crissey
Tadpole edema virus: pathogenesis and growth studies and additional sites of virus infected bullfrog tadpoles Tadpole edema virus: pathogenesis and growth studies and additional sites of virus infected bullfrog tadpoles
No abstract available at this time
Authors
K. Wolf, G. L. Bullock, C. E. Dunbar, M. C. Quimby
The peregrine falcon in Baja California and the Gulf of California The peregrine falcon in Baja California and the Gulf of California
No abstract available.
Authors
Richard C. Banks
Tissue residues of dieldrin in relation to mortality in birds and mammals Tissue residues of dieldrin in relation to mortality in birds and mammals
An experiment was performed with Coturnix to learn what residue levels were indicative of death from dieldrin poisoning. Birds were fed diets containing 250, 50, 10, and 2 ppm dieldrin for periods up to 158 days. The dieldrin was 95% pure HEOD, which is 1,2,3,4,10,10-hexachloro-6, 7.epoxy. l,4,4a,5,6,7,8,8a-octahydro-l,4-endo,exo-5,8- dimethanonaphthalene. When half of a group was dead...
Authors
W. H. Stickel, L.F. Stickel, J. W. Spann
Paleomagnetism, potassium-argon ages, and geology of rhyolites and associated rocks of the Valles Caldera, New Mexico Paleomagnetism, potassium-argon ages, and geology of rhyolites and associated rocks of the Valles Caldera, New Mexico
Paleomagnetic and potassium-argon studies support geologic evidence that the lower member of the Bandelier Tuff was deposited 1.4 m.y. ago. The upper member erupted about 1.0 m.y. ago and was followed by caldera collapse which formed the 12- to 14-mile diameter Valles Caldera. Postcaldera activity which resulted in the eruption of rhyolite domes and pyroclastic material, has occurred at...
Authors
Richard R. Doell, G. Brent Dalrymple, Robert L. Smith, Roy A. Bailey
Chapter 3: Television observations from Surveyor VII Chapter 3: Television observations from Surveyor VII
Surveyor VII, the last spacecraft of the Surveyor series, successfully landed at 01:05:36 GMT, January 10, 1968, on the outer rim flank of the large crater Tycho, in the southern part of the Moon. The spacecraft landed about 30 hours after local lunar sunrise and transmitted about 21,000 pictures during the remainder of the first lunar day of operation. On January 22, after local sunset...
Authors
Eugene Merle Shoemaker, R. M. Batson, H. E. Holt, E. C. Morris, J. J. Rennilson, E. A. Whitaker
Chapter IX: Lunar theory and processes Chapter IX: Lunar theory and processes
Whereas the previous Surveyor missions were undertaken to examine mare surfaces as potential landing areas for the Apollo Program, the primary objective of the Surveyor VII mission, based on purely scientific motivations, was to explore a contrasting highland region and, specifically, to determine the chemistry of the highland material for comparison with the Surveyor V and VI chemical...
Authors
D. E. Gault, J. B. Adams, R. J. Collins, G. P. Kuiper, H. Masursky, J. A. O’Keefe, R. A. Phinney, Eugene Merle Shoemaker