Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2481
Geologic road guides for the Southern Canadian Cordillera--Viewing geology and tectonics along major highways Geologic road guides for the Southern Canadian Cordillera--Viewing geology and tectonics along major highways
The Geologic Road Guides for the Southern Canadian Cordillera provide a layperson’s understanding of the major geologic units and their tectonic origins along portions of two sets of major highways corridors, herein termed the Southern Road Guide and the Northern Road Guide. The two routes are shown on the Southern Canadian Cordillera Geologic Map. The first page of each Road Guide is...
Authors
Warren J. Nokleberg, Raymond A. Price
Marine geology and tectonics--What is under all that water? Marine geology and tectonics--What is under all that water?
This chapter is divided into two main sections. The first section is on Marine Geology Seascapes (what earth scientists call bathymetry). The second section is on Tectonics of Marine Areas.
Authors
David W. Scholl, Warren J. Nokleberg
Regional geology and tectonics Regional geology and tectonics
This chapter describes the regional geology and tectonic origins of the major geologic units for the Northern Cordillera. The goals of the chapter are to: (1) provide a summary and regional overview of this vast region that contains a complicated geologic history; and (2) describe the major geologic units and tectonic events that cover a broad geologic time span from the Proterozoic to...
Authors
Warren J. Nokleberg
Fractional crystallization-induced variations in sulfides from the Noril’sk-Talnakh mining district (polar Siberia, Russia) Fractional crystallization-induced variations in sulfides from the Noril’sk-Talnakh mining district (polar Siberia, Russia)
The distribution of platinum-group elements (PGE) within zoned magmatic ore bodies has been extensively studied and appears to be controlled by the partitioning behavior of the PGE during fractional crystallization of magmatic sulfide liquids. However, other chalcophile elements, especially TABS (Te, As, Bi, Sb, and Sn) have been neglected despite their critical role in forming platinum...
Authors
C.J. Duran, S-J. Barnes, P. Plese, M. Kudrna Prasek, Michael L. Zientek, P. Page
Networking our science to characterize the state, vulnerabilities, and management opportunities of soil organic matter Networking our science to characterize the state, vulnerabilities, and management opportunities of soil organic matter
Soil organic matter (SOM) supports the Earth's ability to sustain terrestrial ecosystems, provide food and fiber, and retains the largest pool of actively cycling carbon. Over 75% of the soil organic carbon (SOC) in the top meter of soil is directly affected by human land use. Large land areas have lost SOC as a result of land use practices, yet there are compensatory opportunities to...
Authors
Jennifer W. Harden, Gustaf Hugelius, Anders Ahlstrom, Joseph C. Blankinship, Ben Bond-Lamberty, Corey Lawrence, Julie Loisel, Avni Malhotra, Robert B. Jackson, Stephen M. Ogle, Claire Phillips, Rebecca Ryals, Katherine Todd-Brown, Rodrigo Vargas, Sintana E. Vergara, M. Francesca Cotrufo, Marco Keiluweit, Katherine Heckman, Susan E. Crow, Whendee L. Silver, Marcia DeLonge, Lucas E. Nave
Bedrock geology of DFDP-2B, central Alpine Fault, New Zealand Bedrock geology of DFDP-2B, central Alpine Fault, New Zealand
During the second phase of the Alpine Fault, Deep Fault Drilling Project (DFDP) in the Whataroa River, South Westland, New Zealand, bedrock was encountered in the DFDP-2B borehole from 238.5–893.2 m Measured Depth (MD). Continuous sampling and meso- to microscale characterisation of whole rock cuttings established that, in sequence, the borehole sampled amphibolite facies, Torlesse...
Authors
Virginia G. Toy, Rupert Southerland, John Townend, Michael J. Allen, Leeza Becroft, Austin Boles, Carolyn Boulton, Brett Carpenter, Alan K. Cooper, Simon C. Cox, Christopher Daube, Daniel R. Faulkner, Angela Halfpenny, Naoki Kato, Stephen Keys, Martina Kirilova, Yusuke Kometani, Timothy Little, Elisabetta Mariani, Benjamin L. Melosh, Catriona D. Menzies, Luiz Morales, Chance Morgan, Hiroshi Mori, Andre Niemeijer, Richard Norris, David Prior, Katrina Sauer, Anja Schleicher, Norio Shigematsu, Damon A.H. Teagle, Harold Tobin, Robert Valdez, Jack Williams, Samantha Yeo, Laura-May Baratin, Nicolas C. Barth, Adrian Benson, Caroline Boese, Bernard Celerier, Calum J. Chamberlain, Ronald Conze, Jamie Coussens, Lisa Craw, Mai-Linh Doan, Jennifer L. Eccles, Jason Grieve, Julia Grochowski, Anton Gulley, Jamie Howarth, Katrina D. Zamudio, Lucie Janku-Capova, Tamara Nicole Jeppson, Robert M. Langridge, Deirdre Mallyon, Ray Marx, Cecile Massiot, Loren Mathewson, Josephine Moore, Osamu Nishikawa, Brent Pooley, Alex Pyne, Martha K. Savage, Doug Schmitt, Sam Taylor-Offord, Phaedra Upton, Konrad C. Weaver, Thomas Wiersberg, Martin Zimmer
The story of a Yakima fold and how it informs Late Neogene and Quaternary backarc deformation in the Cascadia subduction zone, Manastash anticline, Washington, USA The story of a Yakima fold and how it informs Late Neogene and Quaternary backarc deformation in the Cascadia subduction zone, Manastash anticline, Washington, USA
The Yakima folds of central Washington, USA, are prominent anticlines that are the primary tectonic features of the backarc of the northern Cascadia subduction zone. What accounts for their topographic expression and how much strain do they accommodate and over what time period? We investigate Manastash anticline, a north vergent fault propagation fold typical of structures in the fold...
Authors
Harvey M. Kelsey, Tyler C. Ladinsky, Lydia M. Staisch, Brian Sherrod, Richard J. Blakely, Thomas Pratt, William J. Stephenson, Jackson K. Odum, Elmira Wan
A record of change - Science and elder observations on the Navajo Nation A record of change - Science and elder observations on the Navajo Nation
A Record of Change - Science and Elder Observations on the Navajo Nation is a 25-minute documentary about combining observations from Navajo elders with conventional science to determine how tribal lands and culture are affected by climate change. On the Navajo Nation, there is a shortage of historical climate data, making it difficult to assess changing environmental conditions.This...
Authors
Margaret M. Hiza-Redsteer, Stephen M. Wessells
Modifications to EPA Method 3060A to Improve Extraction of Cr(VI) from Chromium Ore Processing Residue-Contaminated Soils Modifications to EPA Method 3060A to Improve Extraction of Cr(VI) from Chromium Ore Processing Residue-Contaminated Soils
It has been shown that EPA Method 3060A does not adequately extract Cr(VI) from chromium ore processing residue (COPR). We modified various parameters of EPA 3060A toward understanding the transformation of COPR minerals in the alkaline extraction and improving extraction of Cr(VI) from NIST SRM 2701, a standard COPR-contaminated soil. Aluminum and Si were the major elements dissolved...
Authors
Christopher T. Mills, Carleton R. Bern, Ruth E. Wolf, Andrea L. Foster, Jean M. Morrison, William Benzel
Play-fairway analysis for geothermal resources and exploration risk in the Modoc Plateau region Play-fairway analysis for geothermal resources and exploration risk in the Modoc Plateau region
The region surrounding the Modoc Plateau, encompassing parts of northeastern California, southern Oregon, and northwestern Nevada, lies at an intersection between two tectonic provinces; the Basin and Range province and the Cascade volcanic arc. Both of these provinces have substantial geothermal resource base and resource potential. Geothermal systems with evidence of magmatic heat...
Authors
Drew Siler, Yingqi Zhang, Nicolas F. Spycher, Patrick Dobson, James S. McClain, Erika Gasperikova, Robert A. Zierenberg, Peter Schiffman, Colin Ferguson, Andrew Fowler, Carolyn Cantwell
Luminescence dating of paleolake deltas and glacial deposits in Garwood Valley, Antarctica: Implications for climate, Ross ice sheet dynamics, and paleolake duration Luminescence dating of paleolake deltas and glacial deposits in Garwood Valley, Antarctica: Implications for climate, Ross ice sheet dynamics, and paleolake duration
The formation of perched deltas and other lacustrine deposits in the McMurdo Dry Valleys of Antarctica is widely considered to be evidence of valley-filling lakes dammed by the grounded Ross Sea ice sheet during the local Last Glacial Maximum, with lake drainage interpreted as a record of grounding line retreat. We used luminescence dating to determine the age of paleolake deltas and...
Authors
Joseph S. Levy, Tammy M. Rittenour, Andrew G. Fountain, Jim E. O'Connor
Geology and undiscovered resource assessment of the potash-bearing Pripyat and Dnieper-Donets Basins, Belarus and Ukraine Geology and undiscovered resource assessment of the potash-bearing Pripyat and Dnieper-Donets Basins, Belarus and Ukraine
Undiscovered potash resources in the Pripyat Basin, Belarus, and Dnieper-Donets Basin, Ukraine, were assessed as part of a global mineral resource assessment led by the U.S. Geological Survey (USGS). The Pripyat Basin (in Belarus) and the Dnieper-Donets Basin (in Ukraine and southern Belarus) host stratabound and halokinetic Upper Devonian (Frasnian and Famennian) and Permian (Cisuralian...
Authors
Mark D. Cocker, Greta J. Orris, Pamela Dunlap, Bruce R. Lipin, Steve Ludington, Robert J. Ryan, Miroslaw Slowakiewicz, Gregory T. Spanski, Jeff Wynn, Chao Yang