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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: 6197
Effects of surfactants on the mobility of nonpolar organic contaminants in porous media Effects of surfactants on the mobility of nonpolar organic contaminants in porous media
No abstract available.
Authors
J. A. Smith, D. Tucker, P. R. Jaffe, R.T. Mueller
Magmatic evolution of the Gulf of California rift Magmatic evolution of the Gulf of California rift
Magmatic events in the Baja peninsula-Gulf of California region are closely related to sequential tectonic regimes of: (1) late Tertiary subduction beneath the continental margin until ~16 to 12.5 Ma; and (2) continental to oceanic rifting that began about 13 Ma. Orogenic calcalkaline volcanic rocks formed subparallel belts of rhyolite ignimbrite of Oligocene age (~34 to 27 Ma) east of...
Authors
Michael G. Sawlan
The relationship between stable oxygen and hydrogen isotope ratios of water in astomatal plants The relationship between stable oxygen and hydrogen isotope ratios of water in astomatal plants
Isotropic fractination of leaf water during transpiration is influenced by both equilibrium and kinetic factors. Previous workers have predicted that the influence of each factor varies depending upon the path of water loss,m whether centralized through stomata, or diffuse through the cuticle. We studied the relationship between the δD and δ18O values of lead and stem waters of laurel...
Authors
Lee W. Cooper, Michael J. DeNiro, Jon E. Keeley
Carrying capacity: human ecology research in Zion National Park Carrying capacity: human ecology research in Zion National Park
No abstract available.
Authors
Jonathan G. Taylor, J. Pratt
A thermodynamic partition model for binding of nonionic organic compounds by organic colloids and implications for their sorption to soils and sediment A thermodynamic partition model for binding of nonionic organic compounds by organic colloids and implications for their sorption to soils and sediment
No abstract available.
Authors
U.P. Chin, Walter J. Weber, C. T. Chiou
Parasite communities in wet and dry forest subpopulations of the Hawaii common amakihi Parasite communities in wet and dry forest subpopulations of the Hawaii common amakihi
No abstract available.
Authors
Charles van Riper
Parameters involved in modeling movement of bacteria in groundwater Parameters involved in modeling movement of bacteria in groundwater
No abstract available.
Authors
Ronald W. Harvey
Quaternary history of some southern and central Rocky Mountain basins Quaternary history of some southern and central Rocky Mountain basins
This chapter summarizes the current state of late Cenozoic stratigraphic knowledge in some Rocky Mountain basins (here defined as the structurally low portions of major drainage basins) that have been studied in detail since Scott’s (1965) summary on the nonglacial history of the southern and middle Rocky Mountains. The Quaternary history of few of these basins has been studied as...
Authors
Marith C. Reheis, Robert C. Palmquist, S.S. Agard, Cheryl Jaworowski, Brainerd Mears, Richard F. Madole, Alan R. Nelson, Gerald Osborn
Initiation processes and flow evolution of turbidity currents: Implications for the depositional record Initiation processes and flow evolution of turbidity currents: Implications for the depositional record
Interpretations of sea-level change and source-area tectonism from the character of turbidite deposits require knowledge of the sediment source, the flow-initiation process, how the turbidity current evolved during flow, and what flow phases were associated with deposition. The flow responds to shape and size characteristics of both the erosional pathway and the morphology of previous...
Authors
William R. Normark, David J. W. Piper
Particulate and colloidal organic material in Pueblo Reservoir, Colorado--Influence of autochthonous source on chemical composition Particulate and colloidal organic material in Pueblo Reservoir, Colorado--Influence of autochthonous source on chemical composition
No abstract available.
Authors
J. F. Ranville, R.A. Harnish, D.M. McKnight
Regressive coastal deposits on Quaternary continental shelves: Preservation and legacy Regressive coastal deposits on Quaternary continental shelves: Preservation and legacy
Regressive coastal deposits containing internal downlapping surfaces are common on continental shelves of the world. Through theoretical considerations and evaluation of examples from the literature and our own studies in California and Italy, we have examined the conditions that lead both to the formation and preservation of these deposits. Coastal downlapping deposits form by...
Authors
Michael E. Field, Fabio Trincardi
A records system for a captive crane flock A records system for a captive crane flock
Crane record keeping systems have been evolving at the Patuxent Wildlife Research Center (PWRC) since 1966 and at the International Crane Foundation (ICF) since 1974. The system we present here, a hybrid of the two systems, has been reorganized to promote easy access of information and to limit redundancy.
Authors
D. H. Ellis, L. Hartman, Scott G. Hereford, J.L. McMillen