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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: 6152
Structural geology of the Quad-Wyoming-Line Creeks area, Beartooth Mountains, Montana Structural geology of the Quad-Wyoming-Line Creeks area, Beartooth Mountains, Montana
The Quad-Wyoming-Line Creeks area is in the northeastern part of the Beartooth Mountains of Montana. The rocks of the area consist mainly of banded migmatite, granitic gneisses, amphibolite, quartzite, and agmatite; small amounts of biotite schist and biotite gneiss, iron-silicate rocks, ultramafic rocks, mafic dikes, and felsic porphyries are also present. Quartzite outcrops...
Authors
Lawrence C. Rowan
Ecology of pocket gophers of Mesa Verde, Colorado Ecology of pocket gophers of Mesa Verde, Colorado
No abstract available.
Authors
C. L. Douglas
Black duck harvest and population dynamics in eastern Canada and the Atlantic Flyway Black duck harvest and population dynamics in eastern Canada and the Atlantic Flyway
No abstract available.
Authors
R. K. Martinson, A. D. Geis, R.I. Smith
Blood protozoa of free-living birds Blood protozoa of free-living birds
Blood protozoa were first reported from wild birds in 1884. Since then numerous surveys throughout the world have demonstrated their presence in a wide variety of hosts and localities with continuing designations of new species. Taxonomic determinations include parasites in the genera Plasmodium, Haemoproteus, Leucocytozoon, Babesia, Lankesterella and Trypanosoma. Transmission of...
Authors
C. M. Herman
Cold-blooded vertebrate immunity to metazoa Cold-blooded vertebrate immunity to metazoa
No abstract available at this time
Authors
S. F. Snieszko
Environment of Mesa Verde, Colorado Environment of Mesa Verde, Colorado
No abstract available at this time
Authors
J. Erdman, C. L. Douglas, J. W. Marr
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