Mission Areas

Energy and Minerals

Mission Areas L2 Landing Page Tabs

Filter Total Items: 592
Year Published: 2016

Chemical abrasion-SIMS (CA-SIMS) U-Pb dating of zircon from the late Eocene Caetano caldera, Nevada

Zircon geochronology is a critical tool for establishing geologic ages and time scales of processes in the Earth's crust. However, for zircons compromised by open system behavior, achieving robust dates can be difficult. Chemical abrasion (CA) is a routine step prior to thermal ionization mass spectrometry (TIMS) dating of zircon to remove...

Watts, Kathryn E.; Coble, Matthew A.; Vazquez, Jorge A.; Henry, Christopher D.; Colgan, Joseph P.; John, David A.

Year Published: 2016

Manual hierarchical clustering of regional geochemical data using a Bayesian finite mixture model

Interpretation of regional scale, multivariate geochemical data is aided by a statistical technique called “clustering.” We investigate a particular clustering procedure by applying it to geochemical data collected in the State of Colorado, United States of America. The clustering procedure partitions the field samples for the entire...

Ellefsen, Karl J.; Smith, David

Year Published: 2016

The geochemical atlas of Alaska, 2016

A rich legacy of geochemical data produced since the early 1960s covers the great expanse of Alaska; careful treatment of such data may provide significant and revealing geochemical maps that may be used for landscape geochemistry, mineral resource exploration, and geoenvironmental investigations over large areas. To maximize the spatial density...

Lee, Gregory K.; Yager, Douglas B.; Mauk, Jeffrey L.; Granitto, Matthew; Denning, Paul D.; Wang, Bronwen; Werdon, Melanie B.
Lee, G.K., Yager, D.B., Mauk, J.L, Granitto, Matthew, Denning, P.D., Wang, Bronwen, and Werdon, M.B., 2016, The Geochemical Atlas of Alaska, 2016: U.S. Geological Survey Data Series 908, 25 p., 272 sheets (11"×17"), GIS database, http://dx.doi.org/10.3133/ds908.

Year Published: 2016

Geology and geologic history of the Moscow-Pullman basin, Idaho and Washington, from late Grande Ronde to late Saddle Mountains time

The Moscow-Pullman basin, located on the eastern margin of the Columbia River flood basalt province, consists of a subsurface mosaic of interlayered Miocene sediments and lava flows of the Imnaha, Grande Ronde, Wanapum, and Saddle Mountains Basalts of the Columbia River Basalt Group. This sequence is ~1800 ft (550 m) thick in the east around...

Bush, John H; Garwood, Dean L; Dunlap, Pamela
Bush, J.H., Garwood, D.L., and Dunlap, Pamela, 2016, Geology and geologic history of the Moscow-Pullman basin, Idaho and Washington, from late Grande Ronde to late Saddle Mountains time, in Lewis, R.S., and Schmidt, K.L., eds., xxxx: Geological Society of America Field Guide 41, p. xxx–xxx, doi: 10.1130/2016.0041(05).

Year Published: 2016

New perspectives on a 140-year legacy of mining and abandoned mine cleanup in the San Juan Mountains, Colorado

The Gold King mine water release that occurred on 5 August 2015 near the historical mining community of Silverton, Colorado, highlights the environmental legacy that abandoned mines have on the environment. During reclamation efforts, a breach of collapsed workings at the Gold King mine sent 3 million gallons of acidic and metal-rich mine water...

Yager, Douglas B.; Fey, David L.; Chapin, Thomas; Johnson, Raymond H.

Year Published: 2016

Gravity and magnetic studies of the eastern Mojave Desert, California and Nevada

IntroductionFrom May 2011 to August 2014, the U.S. Geological Survey (USGS) collected gravity data at more than 2,300 stations and physical property measurements on more than 640 rock samples from outcrops in the eastern Mojave Desert, California and Nevada. Gravity, magnetic, and physical-property data are used to study and locate regional...

Denton, Kevin M.; Ponce, David A.
Denton, K.M., and Ponce, D.A., 2016, Gravity and magnetic studies of the eastern Mojave Desert, California and Nevada: U.S. Geological Survey Open-File Report 2016-1070, 20 p., http://dx.doi.org/10.3133/ofr20161070.

Year Published: 2016

Historical files from Federal Government mineral exploration-assistance programs, 1950 to 1974

The Defense Minerals Administration (DMA), Defense Minerals Exploration Administration (DMEA), and Office of Minerals Exploration (OME) mineral exploration programs were active over the period 1950–1974. Under these programs, the Federal Government contributed financial assistance in the exploration for certain strategic and critical minerals. The...

Frank, David G.
Frank, D.G., 2016, Historical files from Federal Government mineral exploration-assistance programs, 1950 to 1974: U.S. Geological Survey Data Series 1004, http://dx.doi.org/10.3133/ds1004.

Year Published: 2016

Surface slip during large Owens Valley earthquakes

The 1872 Owens Valley earthquake is the third largest known historical earthquake in California. Relatively sparse field data and a complex rupture trace, however, inhibited attempts to fully resolve the slip distribution and reconcile the total moment release. We present a new, comprehensive record of surface slip based on lidar and field...

Haddon, E.K.; Amos, C.B.; Zielke, O.; Jayko, Angela S.; Burgmann, R.

Year Published: 2016

Geologic map of the Vancouver and Orchards quadrangles and parts of the Portland and Mount Tabor quadrangles, Clark County, Washington, and Multnomah County, Oregon

IntroductionThis is a 1:24,000-scale geologic map of the Vancouver and Orchards quadrangles and parts of the Portland and Mount Tabor quadrangles in the States of Washington and Oregon. The map area is within the Portland Basin and includes most of the city of Vancouver, Washington; parts of Clark County, Washington; and a small part of...

O'Connor, Jim E.; Cannon, Charles M.; Mangano, Joseph F.; Evarts, Russell C.
O’Connor, J.E., Cannon, C.M., Mangano, J.F., and Evarts, R.C., 2016, Geologic map of the Vancouver and Orchards quadrangles and parts of the Portland and Mount Tabor quadrangles, Clark County, Washington, and Multnomah County, Oregon: U.S. Geological Survey Scientific Investigations Map 3357, scale 1:24,000, http://dx.doi.org/10.3133/sim3357.

Year Published: 2016

Geologic map of the Morena Reservoir 7.5-minute quadrangle, San Diego County, California

IntroductionMapping in the Morena Reservoir 7.5-minute quadrangle began in 1980, when the Hauser Wilderness Area, which straddles the Morena Reservoir and Barrett Lake quadrangles, was mapped for the U.S. Forest Service. Mapping was completed in 1993–1994. The Morena Reservoir quadrangle contains part of a regional-scale Late Jurassic(?) to Early...

Todd, Victoria R.
Todd, V.R., 2016, Geologic map of the Morena Reservoir 7.5-minute quadrangle, San Diego County, California: U.S. Geological Survey Open-File Report 95–50, 12 p., scale 1:24,000, http://dx.doi.org/10.3133/ofr9550.

Year Published: 2016

Natural thorium resources and recovery: Options and impacts

This paper reviews the front end of the thorium fuel cycle, including the extent and variety of thorium deposits, the potential sources of thorium production, and the physical and chemical technologies required to isolate and purify thorium. Thorium is frequently found within rare earth element–bearing minerals that exist in diverse types of...

Ault, Timothy; Van Gosen, Bradley S.; Krahn, Steven; Croff, Allen

Year Published: 2016

Reevaluation of the Crooked Ridge River- Early Pleistocene (ca. 2 Ma) age and origin of the White Mesa Alluvium, northeastern Arizona

Essential features of the previously named and described Miocene Crooked Ridge River in northeastern Arizona (USA) are reexamined using new geologic and geochronologic data. Previously it was proposed that Cenozoic alluvium at Crooked Ridge and southern White Mesa was pre–early Miocene, the product of a large, vigorous late Paleogene river...

Hereford, Richard; Beard, Sue; Dickinson, William R.; Karlstrom, Karl E.; Heizler, Matthew T.; Crossey, Laura J.; Amoroso, Lee; House, Kyle; Pecha, Mark
Hereford, R. Beard, L.S., Dickinson, W.R., Karlstrom, K.E., Heizler, M.T., Crossey, L.J., Amoroso, L., House, P.K., and Pecha, M., 2016, Reevaluation of the Crooked Ridge River--Early Pleistocene (ca. 2 Ma) age and origin of the White Mesa alluvium, northeastern Arizona: Geosphere, v. 12, no. 3, p. 1-22, https://doi.org/10.1130/GES01124.1.

Filter Total Items: 117
eudialyte and bastnäsite samples
2016 (approx.)
Sample of eudialyte (pink) within layered vein consisting of quartz, albite, and sodic amphibole, Dora Bay, Alaska. Size of sample is 11 by 9 cm. Sample of coarse-grained, tabular bastnäsite within matrix of ferruginous dolomite, Birthday Claim, Mountain Pass, California. Photographs by Philip Verplanck, U.S. Geological Survey. SIR 2010-5070-J
Geologist doing field work in Alaska
April 14, 2016
Geologist doing field work in Alaska
Image shows a scanning electron microscope image of finchite
2015 (approx.)
A scanning electron microscope image of the newly discovered mineral finchite. The Denver Microbeam Lab provided this scan of finchite in order to help describe and identify the mineral as a new one. Finchite is a uranium mineral first observed in Martin County, Texas. Read more about our uranium research here .
Image shows a landscape of the Southern High Plains
2015 (approx.)
The Southern High Plains of New Mexico, Oklahoma, and Texas. USGS conducted a uranium assessment in this region in 2015.
Image shows a sample of finchite with a quarter for scale
2015 (approx.)
A sample of finchite, a newly discovered uranium mineral. Finchite is the yellow material on the surface of the rock. Finchite is found in the late Pleistocene sediments deposited during the Illinoian glacial stage. It was first observed in Martin County, Texas. Read more about our uranium research here .
Image shows a detail of a yellow mineral on white rock
2015 (approx.)
A uranium-vanadate mineral in calcrete. This sample came from near the Sulfur Springs Draw in Texas. USGS conducted an assessment of uranium resources in this region in 2015.
Image shows a USGS scientist leaning against a rock outcropping with trees in the background
2015 (approx.)
Geologist and cataclastic shear zones in the Melozitna granite in the Ruby batholith. This granite contains abundant monazite and high levels of thorium and rare earth elements. The shear zones accelerate erosion of the granite into streams, where the monazite that contains the rare earth elements can be concentrated. This area is part of the Bureau of Land Management's Central Yukon Planning...
Image shows a dry creek bed with two men standing on the banks
2015 (approx.)
Between Lamesa and Big Spring, Texas, runs the Sulfur Spring Draw, a dry creek. It's the site of an economic calcrete-type uranium deposit, the Sulfur Springs Draw Deposit, where a new mineral was discovered in 2015. The mineral, first observed by USGS scientist Bradley Van Gosen, is a uranium-mineral named finchite after long-time USGS uranium geologist Warren Finch. Read more about our uranium...
Image shows a rock outcropping surrounded by desert vegation
2015 (approx.)
A calcrete outcropping near Sulfur Springs Draw in Texas. This deposit dates to the Pliocene and Pleistocene, and hosts uranium-vanadate minerals.
Image shows a sample of the mineral finchite with a chair wheel for scale
2015 (approx.)
A sample of finchite, a newly discovered uranium mineral. Finchite is the yellow material on the surface of the rock. Finchite is found in the late Pleistocene sediments deposited during the Illinoian glacial stage. It was first observed in Martin County, Texas. Read more about our uranium research here .
Filter Total Items: 117
Painting - Denali in Midsummer
June 21, 2016

The U.S. Geological Survey has produced a new compilation of landscape-scale sediment and soil geochemical data for Alaska. This was last completed nearly 40 years ago in 1978, but the new effort uses modern modeling and analysis techniques to map 68 elements across a newly developed and updated geochemical atlas of Alaska.

Image shows sunrise through a drill rig
June 8, 2016

This is the second-largest assessment of potential shale & tight gas resources that the USGS has ever conducted.

Image shows a map with an aerial image of the study site beneath it
May 9, 2016

These are the first published studies to demonstrate water-quality impacts to a surface stream due to activities at an unconventional oil and gas wastewater deep well injection disposal site.

Image shows gold-bearing veins of quartz
May 6, 2016

Happy Mother's Day from EarthWords!

collage of scientists conducting science related to each mission are
April 12, 2016

The fourth volume of the comprehensive history of the U.S. Geological Survey, Minerals, Lands, and Geology for the Common Defence and General Welfare: Volume 4, 1939‒1961, has been issued as an electronic document.

USGS science for a changing world logo
March 30, 2016

Scientists studying rare earth and critical elements now have a solid foundation for future research, as detailed in a special volume of the Society of Economic Geologists. This review volume, featuring several papers authored and co-authored by the U.S. Geological Survey, provides a comprehensive review of the current state of knowledge for rare earth and critical elements in ore deposits.

USGS science for a changing world logo
March 23, 2016

The Central Asia Salt Basin of Turkmenistan, Uzbekistan, Tajikistan and Afghanistan has the potential to contain between 39 and 54 billion metric tons of undiscovered potash resources, according to a global mineral resource assessment led by the U.S. Geological Survey (USGS). Known potash resources in the Central Asia Salt Basin consist of 1.63 billion metric tons.

USGS science for a changing world logo
February 17, 2016

The ongoing resource, climate, hazards and environmental issues of the United States are addressed in a new U.S. Geological Survey product, providing an overview of the USGS Mineral Resources Program's multidisciplinary science.

A piece of limonite, an ore of iron.
February 15, 2016

The naturally occurring material from which a mineral or minerals of economic value can be extracted. Usually minerals, especially metals, are mined first in ore form, then refined later.

USGS science for a changing world logo
February 9, 2016

WASHINGTON—The President’s fiscal year (FY) 2017 budget request for the U.S. Geological Survey reflects the USGS's vital role in addressing some of the most pressing challenges of the 21st Century by advancing scientific discovery and innovation.

Publication Cover for Public Access to USGS Research
February 8, 2016

The U.S. Geological Survey is implementing new measures that will improve public access to USGS-funded science as detailed in its new public access plan.

Collage of photos related to Rare-earth elements (REEs)
January 28, 2016

In 2015, United States mines produced an estimated $78.3 billion of mineral raw materials—down 3percent from $80.8 billion in 2014, the U.S. Geological Survey announced today in its Mineral Commodity Summaries 2016.