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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: 6173
Xantusia riversiana species account Xantusia riversiana species account
No abstract available at this time
Authors
Gary M. Fellers, Charles A. Drost
Groundwater processes in the submarine environment: Chapter 12 Groundwater processes in the submarine environment: Chapter 12
No abstract available.
Authors
James M. Robb
How Cape Cod, Martha's Vineyard, and Nantucket were formed How Cape Cod, Martha's Vineyard, and Nantucket were formed
No abstract available.
Authors
R. N. Oldale
Numerical simulation of tidal dispersion around a coastal headland Numerical simulation of tidal dispersion around a coastal headland
Tidal flows around headlands can exhibit strong spatial gradients in the Eulerian currents, resulting in complex Lagrangian trajectories and dispersion of the vertically integrated flow. This typically occurs when the horizontal length scale of the headland is comparable to or smaller than the tidal excursion. The effects of these headlands on dispersion are investigated using a...
Authors
R. P. Signell, W. Rockwell Geyer
Stoichiometry of mineral reactions from mass balance computations for acid mine waters, Iron Mountain, California Stoichiometry of mineral reactions from mass balance computations for acid mine waters, Iron Mountain, California
No abstract available.
Authors
Charles N. Alpers, D. Kirk Nordstrom
Physical and chemical properties of the phosphate deposit on Nauru, western equatorial Pacific Ocean Physical and chemical properties of the phosphate deposit on Nauru, western equatorial Pacific Ocean
No abstract available.
Authors
David Z. Piper, B.J. Loebner, P. Aharon
Development of slope valleys in the glacimarine environment of a complex subduction zone, Northern Gulf of Alaska Development of slope valleys in the glacimarine environment of a complex subduction zone, Northern Gulf of Alaska
Morphological, seismic-reflection, and sedimentological evidence indicates that glacial ice tongues cut large sea valleys into the Gulf of Alaska continental shelf during the Pleistocene. During the Holocene, glacially-derived sediments from the Copper River and other meltwater streams have been prograding seaward across the shelf, covering the glacial and glacimarine upper Yakataga...
Authors
Paul R. Carlson, Terry R. Bruns, Michael A. Fisher
Chapter 5: Petrology and geochemistry of the metaluminous to peraluminous Chemehuevi Mountains Plutonic Suite, southeastern California Chapter 5: Petrology and geochemistry of the metaluminous to peraluminous Chemehuevi Mountains Plutonic Suite, southeastern California
Structural relief resulting from middle Tertiary extensional deformation in the Chemehuevi Mountains exposes a unique cross section through a temporally and compositionally zoned (both vertically and horizontally), laccolith-shaped intrusion of Late Cretaceous age. The calc-alkalic, metaluminous to peraluminous Chemehuevi Mountains Plutonic Suite exhibits crude normal, vertical, and...
Authors
Barbara E John, Joe Wooden
Chapter 19: Magmatic components of a tilted plutonic system, Klamath Mountains, California Chapter 19: Magmatic components of a tilted plutonic system, Klamath Mountains, California
The Slinkard pluton (SP) and Wooley Creek batholith (WCB) are the lower and upper parts, respectively, of a tilted Middle Jurassic magma system. The SP and lower WCB intruded structurally lower ophiolitic mélange of the Marble Mountain terrane; the upper WCB intruded successively structurally higher metavolcanic and metasedimentary rocks of the western and eastern Hayfork terranes. The...
Authors
Calvin G. Barnes, Charlotte M. Allen, James D. Hoover, Robert H. Brigham
Chapter 21: Neodymium, strontium, and trace-element evidence of crustal anatexis and magma mixing in the Idaho batholith Chapter 21: Neodymium, strontium, and trace-element evidence of crustal anatexis and magma mixing in the Idaho batholith
Variations in initial 143Nd/144 Nd in Late Cretaceous plutonic rocks along the South Fork of the Clearwater River (SFCR) supplement results of Sr and O studies, which demonstrate large-scale mixing in magmas forming the western margin of the Idaho batholith. These marginal or border phases of the batholith span the terrane boundary between Proterozoic crust of North America and late...
Authors
Robert J. Fleck