Mission Areas

Energy and Minerals

Mission Areas L2 Landing Page Tabs

Filter Total Items: 79
Thorium as a nuclear fuel: Chapter 10
Year Published: 2016

Thorium as a nuclear fuel: Chapter 10

No abstract available.

Van Gosen, Bradley S.; Tulsidas, Harikrishnan
Wetting and drying of soil in response to precipitation: Data analysis, modeling, and forecasting
Year Published: 2016

Wetting and drying of soil in response to precipitation: Data analysis, modeling, and forecasting

This paper investigates methods to analyze and forecast soil moisture time series. We extend an existing Antecedent Water Index (AWI) model, which expresses soil moisture as a function of time and rainfall. Unfortunately, the existing AWI model does not forecast effectively for time periods beyond a few hours. To overcome this limitation, we...

Basak, Aniruddha; Kulkarni, Chinmay; Schmidt, Kevin M.; Mengshoel, Ole
A salt diapir-related Mississippi Valley-type deposit: The Bou Jaber Pb-Zn-Ba-F deposit, Tunisia: Fluid inclusion and isotope study
Year Published: 2016

A salt diapir-related Mississippi Valley-type deposit: The Bou Jaber Pb-Zn-Ba-F deposit, Tunisia: Fluid inclusion and isotope study

The Bou Jaber Ba-F-Pb-Zn deposit is located at the edge of the Bou Jaber Triassic salt diapir in the Tunisia Salt Diapir Province. The ores are unconformity and fault-controlled and occur as subvertical column-shaped bodies developed in dissolution-collapse breccias and in cavities within the Late Aptian platform carbonate rocks, which are covered...

Bouhlel, Salah; Leach, David; Johnson, Craig A.; Marsh, Erin; Salmi-Laouar, Sihem; Banks, David A.
Paleomagnetic record determined in cores from deep research wells in the Quaternary Santa Clara basin, California
Year Published: 2016

Paleomagnetic record determined in cores from deep research wells in the Quaternary Santa Clara basin, California

Paleomagnetic study of cores from six deep wells provides an independent temporal framework for much of the alluvial stratigraphy of the Quaternary basin beneath the Santa Clara Valley. This stratigraphy consists of 8 upward-fining cycles in the upper 300 m of section and an underlying 150 m or more of largely fine-grained sediment. The eight...

Mankinen, Edward A.; Wentworth, Carl M.
Engagement with indigenous peoples and honoring traditional knowledge systems
Year Published: 2016

Engagement with indigenous peoples and honoring traditional knowledge systems

The organizers of the 2014 US National Climate Assessment (NCA) made a concerted effort to reach out to and collaborate with Indigenous peoples, resulting in the most comprehensive information to date on climate change impacts to Indigenous peoples in a US national assessment. Yet, there is still much room for improvement in assessment processes...

Maldonado, Julie; Bennett, Bull; Chief, Karletta; Cochran, Patricia; Cozetto, Karen; Gough, Bob; Hiza, Margaret M.; Lynn, Kathy; Maynard, Nancy; Voggesser, Garrit
Two Holocene paleofire records from Peten, Guatemala: Implications for natural fire regime and prehispanic Maya land use
Year Published: 2016

Two Holocene paleofire records from Peten, Guatemala: Implications for natural fire regime and prehispanic Maya land use

Although fire was arguably the primary tool used by the Maya to alter the landscape and extract resources, little attention has been paid to biomass burning in paleoenvironmental reconstructions from the Maya lowlands. Here we report two new well-dated, high-resolution records of biomass burning based on analysis of macroscopic fossil charcoal...

Anderson, Lysanna; Wahl, David B.
Indium: bringing liquid-crystal displays into focus
Year Published: 2015

Indium: bringing liquid-crystal displays into focus

Introduction Indium is rare in the Earth’s crust. The continental crust contains an average of about 50 parts per billion of indium, whereas the oceanic crust contains about 72 parts per billion, which is similar to meteoritic abundances and comparable to the crustal abundance of silver. Indium minerals are rare in nature and only 12 indium...

Mercer, Celestine N.
Mercer, C.N., 2015, Indium—Bringing liquid-crystal displays into focus: U.S. Geological Survey Fact Sheet 2015-3012, 2 p., http://dx.doi.org/10.3133/fs20153012.
Storm-influenced deltaic deposits of the Middle Jurassic Gaikema Sandstone in a measured section on the northern Iniskin Peninsula, Cook Inlet basin, Alaska
Year Published: 2015

Storm-influenced deltaic deposits of the Middle Jurassic Gaikema Sandstone in a measured section on the northern Iniskin Peninsula, Cook Inlet basin, Alaska

Middle Jurassic strata of the Gaikema Sandstone were deposited about 170 million years ago on a delta that was located on the western shoreline of the Cook Inlet basin (Detterman and Hartsock, 1966; LePain and others, 2011, 2013). The delta was built by swift, sediment-laden rivers that flowed southeastward from a mountainous volcanic terrane west...

Stanley, Richard G.; Helmold, Kenneth P.; LePain, David L.
Stanley, R.G., Helmold, K.P., and LePain, D.L., 2015, Storm-influenced deltaic deposits of the Middle Jurassic Gaikema Sandstone in a measured section on the northern Iniskin Peninsula, Cook Inlet basin, Alaska, in Wartes, M.A., Energy-related studies during the 2014 field season, western Cook Inlet, Alaska: Alaska Division of Geological and Geophysical Surveys Preliminary Interpretive Report 2015-5-6, p. 29-42. doi:10.14509/29461, http://dggs.alaska.gov/pubs/id/29461
Pressure disequilibria induced by rapid valve closure in noble gas extraction lines
Year Published: 2015

Pressure disequilibria induced by rapid valve closure in noble gas extraction lines

Pressure disequilibria during rapid valve closures can affect calculated molar quantities for a range of gas abundance measurements (e.g., K-Ar geochronology, (U-Th)/He geochronology, noble gas cosmogenic chronology). Modeling indicates this effect in a system with a 10 L reservoir reaches a bias of 1% before 1000 pipette aliquants have been...

Morgan, Leah; Davidheiser-Kroll, Brett
Morgan, L. E., and B. Davidheiser-Kroll (2015), Pressure disequilibria induced by rapid valve closure in noble gas extraction lines, Geochem. Geophys. Geosyst., 16, 1923–1931, doi:10.1002/2015GC005823.
1000 dams down and counting
Year Published: 2015

1000 dams down and counting

Forty years ago, the demolition of large dams was mostly fiction, notably plotted in Edward Abbey's novel The Monkey Wrench Gang. Its 1975 publication roughly coincided with the end of large-dam construction in the United States. Since then, dams have been taken down in increasing numbers as they have filled with sediment, become unsafe or...

O'Connor, James E.; Duda, Jeff J.; Grant, Gordon E.
Expanding metal mixture toxicity models to natural stream and lake invertebrate communities
Year Published: 2015

Expanding metal mixture toxicity models to natural stream and lake invertebrate communities

A modeling approach that was used to predict the toxicity of dissolved single and multiple metals to trout is extended to stream benthic macroinvertebrates, freshwater zooplankton, and Daphnia magna. The approach predicts the accumulation of toxicants (H, Al, Cd, Cu, Ni, Pb, and Zn) in organisms using 3 equilibrium accumulation models that define...

Balistrieri, Laurie S.; Mebane, Christopher A.; Schmidt, Travis S.; Keller, William (Bill)
Balistrieri, L.S., Mebane, C.A., Schmidt, T.S., and Kellerk, W. 2015, Expanding metal mixture toxicity models to natural stream and lake invertebrate communities: Environmental Toxicology and Chemistry, v. 34, n. 4, p. 761-776, doi:10.1002/etc.2824
Filter Total Items: 73
Map of Undiscovered Cooper Estimate in the Middle East
November 18, 2015

More than 180 million metric tons of undiscovered copper resources may be found in an area of the Middle East that covers Turkey, Georgia, Armenia, Azerbaijan, Iran, western Pakistan and southwestern Afghanistan, according to a recent assessment by the U.S. Geological Survey.

USGS science for a changing world logo
November 3, 2015

On average, streams in the Niobrara-Mowry Play of eastern Wyoming, Fayetteville Play of Arkansas, and Barnett Play of Texas ranked most vulnerable to unconventional oil and gas development, but for different reasons, according to recent U.S. Geological Survey coauthored research.

USGS science for a changing world logo
October 14, 2015

Many grassland bird species in the Bakken shale region, including some seriously declining populations, are displaced from their habitats as a result of oil and gas development, according to new U.S. Geological Survey research.

Aerial view of the Grabens, Canyonlands National Park
October 12, 2015

A graben is a piece of Earth’s crust that is shifted downward in comparison to adjacent crust known as “horsts,” which are shifted upward.

Map of San Joaquin Basin Province
October 6, 2015

The Monterey Formation in the deepest parts of California’s San Joaquin Basin contains an estimated mean volumes of 21 million barrels of oil, 27 billion cubic feet of gas, and 1 million barrels of natural gas liquids, according to the first USGS assessment of continuous (unconventional), technically recoverable resources in the Monterey Formation.

An image of calcite.
September 21, 2015

The process in which magnesium is removed from the mineral dolomite (calcium magnesium carbonate) leaving behind the minerals calcite (calcium carbonate) and periclase (magnesium oxide.)

Image: Moon over Half Dome
September 7, 2015

Despite sounding like something out of Harry Potter, a batholith is a type of igneous rock that forms when magma rises into the earth’s crust, but does not erupt onto the surface. The magma cools beneath the earth’s surface, forming a rock structure that extends at least one hundred square kilometers across (40 square miles), and extends to an unknown depth.

Side by side comparison of a malformed and normal chitinozoan specimen
August 31, 2015

Toxic metals such as iron, lead and arsenic may have helped cause mass extinctions in the world’s oceans millions of years ago, according to recent research from the U.S. Geological Survey, the National Center for Scientific Research, France; and Ghent University, Belgium.

The USGS streamgage on Cement Creek at Silverton, Colorado, measures continuous stream stage and discharge. Cement Creek is part
August 20, 2015

On August 5, while investigating the Gold King Mine in southwestern Colorado, the U.S Environmental Protection Agency accidentally triggered the release of approximately three million gallons of acidic, metal-rich mine wastewater from the Gold King Mine into Cement Creek, a tributary of the Animas River.

collage of scientists conducting science related to each mission are
August 10, 2015

ANCHORAGE, Alaska — In the 20th century, Baranof Island in Southeastern Alaska has drawn attention for its gold, chrome and nickel deposits, timber industry, potential activity of the dormant Mount Edgecumbe volcano, and for numerous commercially developed hot springs.

Map showing percentage of hydraulic fracturing water use
June 30, 2015

The amount of water required to hydraulically fracture oil and gas wells varies widely across the country, according to the first national-scale analysis and map of hydraulic fracturing water usage detailed in a new USGS study accepted for publication in Water Resources Research, a journal of the American Geophysical Union.

collage of scientists conducting science related to each mission are
June 19, 2015

SPOKANE, Wash. — Significant amounts of undiscovered copper may be present in northeast Asia according to a new U.S. Geological Survey report. USGS scientists evaluated the potential for copper in undiscovered porphyry copper deposits in Russia and northeastern China as part of a global mineral resource assessment.