Publications
Here you will find publications, reports and articles produced by geology, energy, and mineral scientists. For a comprehensive listing of all USGS publications, click the button below.
Filter Total Items: 1427
Age measurements of potassium-bearing sulfide minerals by the 40Ar/39Ar technique Age measurements of potassium-bearing sulfide minerals by the 40Ar/39Ar technique
K-Ar ages have been determined for sulfide minerals for the first time. The occurrence of adequate amounts of potassium-bearing sulfides with ideal compositions K3Fe10S14 (∼10 wt.% K) and KFe2S3 (∼16 wt.% K) in samples from a mafic alkalic diatreme at Coyote Peak, California, prompted an attempt to date these materials. K3Fe10S14, a massive mineral with conchoidal fracture, gives an age...
Authors
G.K. Czamanske, M. A. Lanphere, Richard C. Erd, M.C. Blake
Map showing saturated thickness of unconsolidated aquifer, southwestern Kansas, January 1975 Map showing saturated thickness of unconsolidated aquifer, southwestern Kansas, January 1975
No abstract available.
Authors
Edwin D. Gutentag, D.H. Lobmeyer, Steven E. Slagle
Preliminary geologic map of the Laurel Quadrangle, Santa Cruz and Santa Clara counties, California Preliminary geologic map of the Laurel Quadrangle, Santa Cruz and Santa Clara counties, California
No abstract available.
Authors
T. W. Dibblee, E. E. Brabb, Joseph C. Clark
Preliminary geologic maps of the Chittenden, Los Gatos, and Watsonville East quadrangles, California Preliminary geologic maps of the Chittenden, Los Gatos, and Watsonville East quadrangles, California
No abstract available.
Authors
T. W. Dibblee, Earl E. Brabb
Feasibility and cost of using a computer to prepare landslide susceptibility maps of the San Francisco Bay region, California Feasibility and cost of using a computer to prepare landslide susceptibility maps of the San Francisco Bay region, California
No abstract available.
Authors
Evelyn B. Newman, Arthur R. Paradis, Earl E. Brabb
Geological Survey research 1978 Geological Survey research 1978
This U.S. Geological Survey activities report includes a summary of 1978 fiscal year scientific and economic results accompanied by a list of geologic and hydrologic investigations in progress and a report on the status of topographic mapping. The summary of results includes: (1) Mineral and water resources, (2) Engineering geology and hydrology, (3) Regional geology, (4) Principles and...
Authors
Water Resources Division U.S. Geological Survey
Regional mineral resource assessment in Alaska, a case history Regional mineral resource assessment in Alaska, a case history
No abstract available.
Authors
Donald A. Singer, W. D. Menzie, John H. DeYoung
Paleomagnetic evidence for a Late Cretaceous deformation of the Great Valley Sequence, Sacramento Valley, California Paleomagnetic evidence for a Late Cretaceous deformation of the Great Valley Sequence, Sacramento Valley, California
Paleomagnetic samples from five localities within the Great Valley sequence range in age from Late Jurassic to Late Cretaceous. All samples possess normal polarity, and alternating-field demagnetization experiments show that the remanence was acquired after the sequence was folded. A mean paleomagnetic pole position determined from 17 demagnetized samples is located at 72° N., 181° E...
Authors
Edward A. Mankinen
Geochemical and generalized geological map showing distribution and abundance of lead in the Goodnews and Hagemeister Island quadrangles region, southwestern Alaska Geochemical and generalized geological map showing distribution and abundance of lead in the Goodnews and Hagemeister Island quadrangles region, southwestern Alaska
No abstract available.
Authors
Thomas D. Hessin, P. M. Taufen, J. C. Seward, S. J. Quintana, A. L. Clark, Donald Grybeck, J. M. Hoare, W. L. Coonrad
Ophiolitic terranes of California, Oregon, and Nevada Ophiolitic terranes of California, Oregon, and Nevada
No abstract available.
Authors
W. Porter Irwin
Review of Paleozoic rocks of the Klamath Mountains Review of Paleozoic rocks of the Klamath Mountains
No abstract available.
Authors
W. P. Irwin
Plate tectonic history of the Yolla Bolly Junction, northern California: Geological Society of America Guidebook Plate tectonic history of the Yolla Bolly Junction, northern California: Geological Society of America Guidebook
No abstract available.
Authors
M. Clark Blake, A. S. Jayko, D. L. Jones