Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2487
Some quantitative properties of mineral deposits Some quantitative properties of mineral deposits
No abstract available.
Authors
W. D. Menzie, Donald A. Singer
Metamorphic infrastructure in the northern Ruby Mountains, Nevada Metamorphic infrastructure in the northern Ruby Mountains, Nevada
The metamorphic complex of the northern Ruby Mountains in northeastern Nevada exposes Paleozoic strata that are metamorphosed to sillimanite grade, migmatized, and recumbently folded. Nappes are variously overturned to the east, north, south, and west. The deeper part of this metamorphic infrastructure is a migmatitic zone pervaded by pegmatitic two-mica granite. A structurally higher...
Authors
Keith A. Howard
What can grade-tonnage relations really tell us? What can grade-tonnage relations really tell us?
No abstract available.
Authors
Donald A. Singer, John H. DeYoung
Geological Survey research 1980 Geological Survey research 1980
A summary of recent significant scientific and economic results accompanied by a list of geologic, hydrologic, and cartographic investigations in progress.
Authors
Water Resources Division U.S. Geological Survey
Nature and origin of metalliferous sediment in DOMES Site C, Pacific manganese nodule province Nature and origin of metalliferous sediment in DOMES Site C, Pacific manganese nodule province
No abstract available.
Authors
James L. Bischoff, David Z. Piper, Paula Quinterno
Tertiary paleontology and stratigraphy of the central Santa Cruz Mountains, California Coast Ranges Tertiary paleontology and stratigraphy of the central Santa Cruz Mountains, California Coast Ranges
No abstract available.
Authors
J. C. Clark, E. E. Brabb, W.O. Addicott
The Klamath Mountains and Coast Ranges in northern California and southern Oregon: Chapter II-B The Klamath Mountains and Coast Ranges in northern California and southern Oregon: Chapter II-B
No abstract available.
Authors
W. P. Irwin, P.E. Hotz
Marine magnetic anomalies Marine magnetic anomalies
Marine magnetic data have been available for many years from all of the world's oceans, and their contribution to marine geophysics and geology is profound. These data, for example, have allowed charting the age of the ocean floor, reconstruction of the geologic history of the major ocean basins, development of a Cenozoic and Mesozoic timescale of geomagnetic reversals, and speculation...
Authors
Richard J. Blakely, S.C. Cande
Annotated bibliography of landslides in the Circumpacific region exclusive of the Soviet Union and the United States Annotated bibliography of landslides in the Circumpacific region exclusive of the Soviet Union and the United States
No abstract available.
Authors
Fred A. Taylor, Earl E. Brabb
By
Geology, Energy, and Minerals Mission Area, Natural Hazards Mission Area, Energy Resources Program, Landslide Hazards Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Geologic Hazards Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Revised geomagnetic polarity time scale for the interval 0–5 m.y. B.P. Revised geomagnetic polarity time scale for the interval 0–5 m.y. B.P.
A change in the constants used in K‐Ar dating and a significant increase in new data have made a recompilation and recomputation of data used to define the Late Cenozoic K‐Ar polarity time scale highly desirable at this time. All available data in the range 0–5 m.y. have been recalculated using the refined constants, with 354 data points in this time interval now meeting the minimum...
Authors
Edward A. Mankinen, G. Brent Dalrymple
By
Geomagnetic paleointensities by the Thelliers' method from submarine pillow basalts: Effects of seafloor weathering Geomagnetic paleointensities by the Thelliers' method from submarine pillow basalts: Effects of seafloor weathering
Measurements of geomagnetic paleointensity using the Thelliers' double‐heating method in vacuum have been made on 10 specimens of submarine pillow basalt obtained from 7 fragments dredged from localities 700,000 years old or younger. In the magnetic minerals, the titanium/iron ratio parameter x and the cation deficiency (oxidation) parameter x were determined by X‐ray diffraction and...
Authors
Sherman Gromme, Edward A. Mankinen, Monte Marshall, Robert S. Coe
By