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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

Contemporary deformation in the Yakima fold and thrust belt estimated with GPS Contemporary deformation in the Yakima fold and thrust belt estimated with GPS

Geodetic, geologic and palaeomagnetic data reveal that Oregon (western USA) rotates clockwise at 0.3 to 1.0° Ma−1 (relative to North America) about an axis near the Idaho–Oregon–Washington border, while northeast Washington is relatively fixed. This rotation has been going on for at least 15 Ma. The Yakima fold and thrust belt (YFTB) forms the boundary between northern Oregon and central
Authors
Robert McCaffrey, Robert W. King, Ray E. Wells, Matthew Lancaster, M. Meghan Miller

Accretionary lapilli: what’s holding them together? Accretionary lapilli: what’s holding them together?

Accretionary lapilli from Tagus cone, Isla Isabela, Galápagos were analyzed using scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS) techniques. Our main findings are (1) the lapilli formed and hardened in a few minutes while still aloft in the dispersing eruption column. (2) Palagonite rinds developed first on the basaltic glass clasts, and subsequently...
Authors
Paul M. Adams, David K. Lynch, David C. Buesch

Potash in 2015 Potash in 2015

No abstract available.
Authors
Stephen M. Jasinski

Gemstones in 2015 Gemstones in 2015

No abstract available.
Authors
Donald W. Olson

Gypsum in 2015 Gypsum in 2015

No abstract available.
Authors
Robert Crangle
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