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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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Iron-titanium oxide minerals and magnetic susceptibility anomalies in the Mariano Lake-Lake Valley cores-Constraints on conditions of uranium mineralization in the Morrison Formation, San Juan Basin, New Mexico Iron-titanium oxide minerals and magnetic susceptibility anomalies in the Mariano Lake-Lake Valley cores-Constraints on conditions of uranium mineralization in the Morrison Formation, San Juan Basin, New Mexico
Petrographic study of the Mariano Lake-Lake Valley cores reveals three distinct zones of postdepositional alteration of detrital Fe-Ti (iron-titanium) oxide minerals in the Westwater Canyon Member of the Upper Jurassic Morrison Formation. In the uranium-bearing and adjacent portions of the Westwater Canyon, these detrital Fe-Ti oxide minerals have been thoroughly altered by leaching of...
Authors
Richard L. Reynolds, Neil S. Fishman, James H. Scott, Mark R. Hudson
Physio-chemical processes affecting copper, tin and zinc toxicity to algae: A review Physio-chemical processes affecting copper, tin and zinc toxicity to algae: A review
This chapter focuses on the physic-chemical processes affecting copper, zinc, and tin toxicity to algae. Both Cu and Zn are essential algal micronutrients, cofactors in numerous biochemical processes. The availability of a nutrient or toxic substance can be significantly affected by precipitation. Methods for modeling the effects of adsorption–desorption reactions have been previously...
Authors
James S. Kuwabara
Parameters affecting the partition coefficients of organic compounds in solvent-water and lipid-water systems Parameters affecting the partition coefficients of organic compounds in solvent-water and lipid-water systems
No abstract available.
Authors
C. T. Chiou, J.H. Block
Evaluating the structure of habitat for wildlife Evaluating the structure of habitat for wildlife
No abstract available.
Authors
H.L. Short, S.C. Williamson
Artificial propagation of coregonines in the management of the Laurentian Great Lakes Artificial propagation of coregonines in the management of the Laurentian Great Lakes
Numerous stresses caused wide fluctuations in the abundance of Great Lakes coregonine fishes during the last century. State, Provincial, and Federal agencies attempted to bolster these fisheries by stocking more than 32 billion fry of lake whitefish (Coregonus clupeaformis) and 6 billion fry of lake herring (C. artedii) over a period of about 90 years (1870-1960). Propagation efforts...
Authors
Thomas N. Todd
Concepts and constraints of habitat model testing Concepts and constraints of habitat model testing
No abstract available.
Authors
M. Schamberger, J. O'Neil
Minturn and Sangre de Cristo formations of Southern Colorado: A prograding fan delta and alluvial fan sequence shed from the ancestral Rocky Mountains Minturn and Sangre de Cristo formations of Southern Colorado: A prograding fan delta and alluvial fan sequence shed from the ancestral Rocky Mountains
The Middle Pennsylvania!) Minturn Formation and the Pennsylvanian-Permian Sangre de Cristo Formation of the northern Sangre de Cristo Range form a thick progradational sequence of coarse clastic sediments. These sediments were deposited along the western margin of the central Colorado trough during uplift of the late Paleozoic Uncompahgre highland, a major structural and topographic...
Authors
D. A. Lindsay, R. F. Clark, S. J. Soulliere
An overview of rates of chemical weathering An overview of rates of chemical weathering
No abstract available.
Authors
Steven M. Coleman, David P. Dethier
Analysis of forest structure using thematic mapper simulator data Analysis of forest structure using thematic mapper simulator data
No abstract available at this time
Authors
D. L. Peterson, W.E. Westman, N.L. Stephenson, V.G. Ambrosia, J.A. Brass, M.A. Spanner
Aquatic birds and selenium in the San Joaquin Valley Aquatic birds and selenium in the San Joaquin Valley
Kesterton Reservoir is a series of ponds comprising 1,200 acres sitting in the grasslands of the Kesterton National Wildlife Refuge. It is bounded on the east by the San Luis Drain, a concrete-lined canal that discharges agricultural drainage into the ponds at their southern end, from which point it then flows northward through the twelve ponds (see the map on the page following). Mike...
Authors
Harry M. Ohlendorf