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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: 6063

The seagrasses of the Gulf of Mexico

The Gulf of Mexico is a vast basin of water, spanning 12° of latitude, from 18° to 30°N. and 17° of longitude, from 81° to 98°W. It is bisected by the Tropic of Cancer and is largely subtropical; however, along the northern edge, up to five days with freezing temperatures are probable on an annual basis. The coastal fringe is moist, with annual precipitation in excess of 1 000 mm, except for south
Authors
C.P. Onuf, R. C. Phillips, C. A. Moncreiff, A. Raz-Guzman, Jorge A Herrera-Silveira
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

Seismology, observational

No abstract available.
Authors
William H. K. Lee

Mountain glaciations of the Sierra Nevada

No abstract available.
Authors
Doug Clark, Alan R. Gillespie, Malcolm Clark, Bud Burke

The Rocky Mountain glacial model; the Wind River Range, Wyoming

No abstract available.
Authors
D. E. Dahms, R. D. Hall, Ralph R. Shroba, C. J. Sorenson, E. A. Lynch, M. T. Applegarth
By
Geosciences and Environmental Change Science Center

Hydraulic logging methods - A summary and field demonstration in Conyers, Rockdale County, Georgia

Geophysical surveying techniques provide important information for ground-water investigations (Zohdy and others, 1974; Keys, 1997; Haeni and others, 2001). Subsurface-geophysical methods are used to delineate and characterize hydraulically active zones; the extent of contamination, and contaminant sources; identify geologic features; optimize monitoring well placement; and guide remediation effor
Authors
Carole D. Johnson, John H. Williams
By
Water Resources Mission Area, Groundwater and Streamflow Information Program, New York Water Science Center

Pore-water pressure

No abstract available. 
Authors
Jon J. Major

Quaternary geology of the western United States

No abstract available.
Authors
Don J. Easterbrook, Kenneth L. Pierce, John Gosse, Alan R. Gillespie, Ed Evenson, Ken Hamblin

Debris flow

No abstract available. 
Authors
Jon J. Major

Late Eocene impacts: Geologic record, correlation, and paleoenvironmental consequences

We present new magnetostratigraphic and stable isotopic (𝜹18C, 𝜹13Ccarb) data to help improve correlations among three late Eocene impact craters and their inferred breccia and ejecta deposits. Our analyses also shed light on potential global environmental consequences attributable to the impacts. The new data come from a continuously cored interval of the subsurface Chickahominy Formation, which
Authors
C. Wylie Poag, Edward A. Mankinen, Richard D. Norris
By
Woods Hole Coastal and Marine Science Center

Mechanics of geological materials

No abstract available.
Authors
Richard M. Iverson
By
Volcano Hazards Program, Volcano Science Center, Cascades Volcano Observatory

Debris flow

No abstract available.
Authors
Richard M. Iverson
By
Volcano Hazards Program, Volcano Science Center, Cascades Volcano Observatory

Bedrock geology, tectonics, and erosional history of the Sierra Nevada, California, with an overview of cave and karst development

No abstract available. 
Authors
Greg M. Stock, James G. Moore