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Publications

Results from our Program’s research and minerals information activities are published in USGS publications series as well as in outside journals.  To follow Minerals Information Periodicals, subscribe to the Mineral Periodicals RSS feed.

Filter Total Items: 2586

Integrating spatial and frequency information in the search for kuroko deposits of the Hokuroku District, Japan Integrating spatial and frequency information in the search for kuroko deposits of the Hokuroku District, Japan

A new method (FINDER) that uses the area of influence and Bayesian statistics to aid in selection of target areas on the basis of one or more variables and multiple observations was tested with drill hole data. A previously defined bimodal distribution of Na 2 O with the low sodium group confined to a 1.5 X 3.0-km zone beneath the cluster of deposits at Fukazawa was used as a control...
Authors
Donald A. Singer, Ryoichi Kouda

Paleomagnetic results from the Shasta Bally Plutonic Belt in the Klamath Mountains Province, northern California Paleomagnetic results from the Shasta Bally Plutonic Belt in the Klamath Mountains Province, northern California

Available paleomagnetic data show approximately 100° of clockwise rotation for Permian and Triassic strata of the Eastern Klamath terrane. Jurassic strata of this terrane are rotated approximately 60° clockwise, which is comparable to rotations reported for Jurassic plutons that occur elsewhere in the Klamath Mountains province. Paleomagnetic data obtained during the present study from...
Authors
Edward A. Mankinen, William P. Irwin, C. Sherman Gromme

Geologic map of the Ajo and Lukeville 1° by 2° quadrangle, southwest Arizona Geologic map of the Ajo and Lukeville 1° by 2° quadrangle, southwest Arizona

No abstract available.
Authors
Floyd Gray, R. J. Miller, M. J. Grubensky, R. M. Tosdal, G. B. Haxel, D. W. Peterson, D. J. May, L. T. Silver

Element concentrations in soils and other surficial materials of Alaska Element concentrations in soils and other surficial materials of Alaska

Mean concentrations of 35 elements, ash yields, and pH have been estimated for samples of sils and other unconsolidated surficial materials from 266 collection locations throughout Alaska. These background values can be applied to studies of environmental geochemistry and health, wildlife management, and soil-forming processes in cold climates and to computation of element abundances on...
Authors
L. P. Gough, R. C. Severson, H.T. Shacklette

Tectonostratigraphic terranes of the Croissilles Harbour region, South Island, New Zealand Tectonostratigraphic terranes of the Croissilles Harbour region, South Island, New Zealand

The boundary between Hokonui and Te Anau assemblages is flanked by a broad (10–20 km) zone of imbricated slabs of late Paleozoic and Mesozoic lithostratigraphic terranes. Five terranes are mapped, three of predominantly sedimentary character (Dun Mountain‐Maitai, Rai, Pelorus) are separated by two consisting of ophiolitic melange (Patuki, Croisilles). A regional stratigraphy is mapped...
Authors
C. A. Landis, M. Clark Blake

Unconformity between Coast Range ophiolite and part of the lower Great Valley sequence, South Fork of Elder Creek, Tehama County, California Unconformity between Coast Range ophiolite and part of the lower Great Valley sequence, South Fork of Elder Creek, Tehama County, California

The South Fork of Elder Creek is located on private property about 6 mi (10 km) northwest of Paskenta, Calif. (Fig. 1). To visit this locality it is necessary to call Mr. Les Sutfin (916-824-4628) and arrange to pick up the key to the gate at his home in Corning. From the Paskenta Store, drive 3.3 mi (5.3 km) north on the Toomes Camp road to the locked gate on the north side of the road...
Authors
Blake, A. S. Jayko, D. L. Jones, B. W. Rogers

Crustal extension along a rooted system of imbricate low-angle faults: Colorado River extensional corridor, California and Arizona Crustal extension along a rooted system of imbricate low-angle faults: Colorado River extensional corridor, California and Arizona

The upper 10 to 15 km of crystalline crust in the 100-km-wide Colorado River extensional corridor of mid-Tertiary age underwent extension along an imbricate system of gently dipping normal faults. Detachment faults cut gently down-section eastward in the direction of tectonic transport from a headwall breakaway, best expressed in the Old Woman Mountains, California. Successively higher...
Authors
Keith A. Howard, B.E. John
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