Publications
Products (journal articles, reports, fact sheets) authored by current and past scientists are listed below. Please check the USGS Pubs Warehouse for other USGS publications.
Filter Total Items: 1826
Natural gas hydrates of the Prudhoe Bay and Kuparuk River area, North Slope, Alaska
Gas hydrates are crystalline substances composed of water and gas, mainly methane, in which a solid-water lattice accommodates gas molecules in a cage-like structure, or clathrate. These substances commonly have been regarded as a potential unconventional source of natural gas because of their enormous gas-storage capacity. Significant quantities of naturally occurring gas hydrates have been detec
Authors
Timothy S. Collett
Spectral Distinctions between the Leading and Trailing Hemispheres of Callisto: New Observations
An analysis of recent telescopic observations of Callisto results in new insights regarding spectral variations from the leading to the trailing hemisphere of Callisto. Examination of data in the wavelength range from 2.0 to 2.5 ??m indicates that previous suggestions of spectral differences are most likely the result of experimental uncertainty or error. Slight variations in the slope of this wav
Authors
W. M. Calvin, R. N. Clark
Petrology and U-Pb geochronology of buried Avalonian plutonic rocks on southeastern Cape Cod
Plutonic rocks have been intersected by two separate drill holes on southeastern Cape Cod. Hole CC2 is located at Chatham Harbor about 7 km south of the Nauset anomaly, an east-northeast-trending magnetic lineament that was considered to separate the distinct plutonic zones of Avalon terrane. This drill hole intersected weakly foliated, fairly homogeneous biotite granite. Zircons from this granite
Authors
G. W. Leo, J.K. Mortensen, B. Barreiro, J. D. Phillips
Timing of early Tertiary ridge subduction in southern Alaska: A section in Geologic studies in Alaska by the U.S. Geological Survey, 1992
We present a new compilation of 158 isotopic ages from Tertiary plutons that intrude the accretionary prism (Chugach-Prince William composite terrane) of southern Alaska. Two broad plutonic age groups are present: Paleocene to Eocene (the Sanak-Baranof plutonic belt), and Oligocene to Miocene. Plutons of the Sanak-Baranof belt are broadly coeval with magmatism along the axis of an Andean-type arc
Authors
Dwight Bradley, Peter J. Haeussler, Timothy M. Kusky
SPECtrum Processing Routines User's Manual Version 3 (program SPECPR)
IntroductionThe SPECtrum Processing Routines (SPECPR) is a large-scale interactive program for general one-dimensional array processing and optimized for reflectance spectroscopy data and analysis. The program processes one-dimensional arrays up to 4852 data points and the operations include addition, subtraction, multiplication, division, trigonometric functions, logarithmic and exponential funct
Authors
Roger N. Clark
SPVIEW; spectral plot program for accessing the USGS Digital Spectral Library database with MS-DOS personal computers, version 1.00
No abstract available.
Authors
K. Eric Livo, Roger N. Clark, Daniel H. Knepper
SPVIEW; spectral plot program for accessing the USGS Digital Spectral Library database with MS-DOS personal computers, version 1.00
No abstract available
Authors
K.E. Livo, Roger N. Clark, Daniel H. Knepper
Materials provided at the workshop Geophysical map interpretation on the PC, convened April 21-22, 1993
No abstract available.
Authors
V. J. Grauch, J. D. Phillips, D. B. Hoover, J. A. Pitkin, K.E. Livo, A. E. McCafferty
Materials provided at the workshop Geophysical map interpretation on the PC, convened April 21-22, 1993
No abstract available.
Authors
V. J. Grauch, J. D. Phillips, D. B. Hoover, J. A. Pitkin, K.E. Livo, A. E. McCafferty
Materials provided at the workshop Geophysical map interpretation on the PC, convened April 21-22, 1993
No abstract available.
Authors
V. J. Grauch, J. D. Phillips, D. B. Hoover, J. A. Pitkin, K.E. Livo, A. E. McCafferty
Materials provided at the workshop Geophysical map interpretation on the PC, convened April 21-22, 1993
No abstract available.
Authors
V. J. Grauch, J. D. Phillips, D. B. Hoover, J. A. Pitkin, K.E. Livo, A. E. McCafferty
Understanding our fragile environment; Lessons from geochemical studies
An understanding of our fragile environment can begin with a recognition of the importance of certain elements, commonly called "minerals substances" (such as iron and zinc), in the lives of humans and animals and in the soils that support plants. This recognition is well deserved because these elements are essential for the life or optimum health of an organism. Some elements such as carbon, hydr
Authors
Larry P. Gough, Sigrid Asher-Bolinder, Laurie S. Balistrieri, George N. Breit, Thomas J. Casadevall, James G. Crock, Kimberley I. Cunningham, Joseph S. Duval, James A. Erdman, Barbara M. Erickson, Walter H. Ficklin, Larry L. Jackson, Rama K. Kotra, Joel S. Leventhal, James M. McNeal, William R. Miller, James K. Otton, Douglass E. Owen, Geoffrey S. Plumlee, G. Michael Reimer, Ronald C. Severson, Kathleen S. Smith, Ronald R. Tidball, Robert A. Zielinski