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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: 6063
Cretaceous and Paleogene calcareous nannofossil biostratigraphy of New Jersey
No abstract available.
Authors
Jean Self-Trail, Laurel M. Bybell
Hydrological and thermal response of lakes to climate: Description and modeling
Lake systems continually respond to climatic conditions that vary over broad scales of space and time. The spatial distribution of lakes on the Earth’s surface is indicative of long-term patterns of atmospheric circulation, and the annual cycle of climate over lake basins is reflected in seasonal change in the size and temperature of lakes. Lake size is determined by the balance of water inputs an
Authors
Steven W. Hostetler
Modeling mangrove canopy reflectance using a light interaction model and an optimization technique
At 20 sites, incorporating mixtures of black, red, and white mangroves, canopy reflectance spectra were derived from high resolution spectral data taken from a helicopter platform. Canopy characteristics were predicted from the canopy reflectance spectra by using measured and estimated data as inputs into a light-canopy interaction model within a optimization routine. Pertinent to average conditio
Authors
Elijah Ramsey III, John R. Jensen
Assessing the hydrologic impact of land use change in wetland watersheds: A case study from Northern Ohio, USA
No abstract available.
Authors
K. A. McClintock, J. A. Harbor, Timothy P. Wilson
Porphyry copper and other intrusion-related mineralization in Mexico
Intrusion-related copper-bearing ore deposits in Mexico span a wide-range of deposit types and geological settings and formed from the mid-Mesozoic through the Holocene. These deposits include world-class copper porphyry and skarn deposits as well as a continuum of similar skarn, porphyry, vein, and replacement deposits that contain variable quantities of molybdenum, zinc, silver, lead, iron, gold
Authors
Mark D. Barton, John-Mark G. Staude, Lukas Zurcher, Peter K. M. Megaw
Geochemical processes controlling acid-drainage generation and cyanide degradation at Summitville
No abstract available.
Authors
Geoffrey S. Plumlee, Kathleen S. Smith, Elwin L. Mosier, Walter H. Ficklin, Maria R. Montour, Paul Briggs, Allen L. Meier
Geometry of sandy deposits at the distal edge of the Mississippi Fan, Gulf of Mexico
Sidescan sonar provides a map of the seafloor that has greatly improved the understanding of depositional processes on modern deep-sea fans (e.g. Mutti and Normark 1991). Here, we present a sidescan-sonar mosaic from the eastern Gulf of Mexico that images the distal reaches of a channel on the Mississippi Fan and the deposits associated with it (Fig. 41.1). This area is one of several deep-sea fan
Authors
D. C. Twichell, W. C. Schwab, Neil H. Kenyon
Late Quaternary turbidite systems in Lake Baikal, Russia
No abstract available.
Authors
C.H. Nelson, E.B. Karabanov, S.M. Colman
The importance of geology in understanding and remediating environmental problems at Summitville
No abstract available.
Authors
Geoffrey S. Plumlee, John E. Gray, M. M. Roeber, Mark F. Coolbaugh, Marta J. Flohr, Gene Whitney
The role of serpentinite melanges in the unroofing of UHPM rocks: An example from the Western Alps of Italy: Chapter 6
The ultrahigh pressure metamorphic rocks (UHPM) of the Dora-Maira continental massif are overlain by a stack of oceanic nappes. Metamorphic grade appears to increase downward but with marked discontinuities between each of the nappes, suggesting that section has been removed along the bounding faults. This apparent omission of section is greatest in the lowest oceanic unit where a serpentinite mel
Authors
M. Clark Blake, D.E. Moore, A. S. Jayko
U.S. East Coast EEZ: Part II
No abstract available.
Authors
James M. Robb, William P. Dillon, Dennis W. O'Leary, Peter Popenoe
Loblolly-Shortleaf Pine: Assessment of air pollutant loadings in Stewart and Marion Counties and their relationship to Southern Pine Beetle Infestations
No abstract available
Authors
Thomas G. Huntington