Mission Areas

Energy and Minerals

Mission Areas L2 Landing Page Tabs

Filter Total Items: 621
Year Published: 2016

Marine magnetic survey and onshore gravity and magnetic survey, San Pablo Bay, northern California

IntroductionFrom November 2011 to August 2015, the U.S. Geological Survey (USGS) collected more than 1,000 line-kilometers (length of lines surveyed in kilometers) of marine magnetic data on San Pablo Bay, 98 onshore gravity stations, and over 27 line-kilometers of ground magnetic data in northern California. Combined magnetic and gravity...

Ponce, David A.; Denton, Kevin M.; Watt, Janet T.
Ponce, D.A., Denton, K.M., and Watt, J.T., 2016, Marine magnetic survey and onshore gravity and magnetic survey, San Pablo Bay, northern California: U.S. Geological Survey Open-File Report 2016–1150, 14 p., http://dx.doi.org/10.3133/ofr20161150.

Year Published: 2016

Forward modeling of gravity data using geostatistically generated subsurface density variations

Using geostatistical models of density variations in the subsurface, constrained by geologic data, forward models of gravity anomalies can be generated by discretizing the subsurface and calculating the cumulative effect of each cell (pixel). The results of such stochastically generated forward gravity anomalies can be compared with the observed...

Phelps, Geoffrey

Year Published: 2016

Time-slice maps showing age, distribution, and style of deformation in Alaska north of 60° N.

The structural architecture of Alaska is the product of a complex history of tectonism that occurred along the Cordilleran and Arctic margins of North America through interactions with ancient and modern ocean plates and with continental elements derived from Laurentia, Siberia, and Baltica. To unravel the tectonic history of Alaska, we...

Moore, Thomas E.; Box, Stephen E.
Moore, T.E., and Box, S.E., 2016, Time-slice maps showing age, distribution, and style of deformation in Alaska north of 60° N.: U.S. Geological Survey Open-File Report 2016–1138, 101 p., http://dx.doi.org/10.3133/ofr20161138.

Year Published: 2016

Mineral resources of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming

Scientific Investigations Report 2016–5089 and accompanying data releases are the products of the U.S. Geological Survey (USGS) Sagebrush Mineral-Resource Assessment (SaMiRA). The assessment was done at the request of the Bureau of Land Management (BLM) to evaluate the mineral-resource potential of some 10 million acres of Federal and adjacent...

Day, Warren C.; Frost, Thomas P.; Hammarstrom, Jane M.; Zientek, Michael L.
Day, W.C., Frost, T.P., Hammarstrom, J.M., and Zientek, M.L., eds., 2016, Mineral Resources of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming: U.S. Geological Survey Scientific Investigations Report 2016–5089, http://dx.doi.org/10.3133/sir20165089.

Year Published: 2016

Overview with methods and procedures of the U.S. Geological Survey mineral-resource assessment of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming: Chapter A in Mineral resources of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming

This report, chapter A of Scientific Investigations Report 2016–5089, provides an overview of the U.S. Geological Survey (USGS) Sagebrush Mineral-Resource Assessment (SaMiRA). The report also describes the methods, procedures, and voluminous fundamental reference information used throughout the assessment. Data from several major publicly...

Day, Warren C.; Hammarstrom, Jane M.; Zientek, Michael L.; Frost, Thomas P.
Day, W.C., Hammarstrom, J.M., Zientek, M.L., and Frost, T.P., eds., 2016, Overview with methods and procedures of the U.S. Geological Survey mineral-resource assessment of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming (ver. 2.0, October 2016): U.S. Geological Survey Scientific Investigations Report 2016–5089–A, 211 p., http://dx.doi.org/10.3133/sir20165089A.

Year Published: 2016

Three-dimensional electrical resistivity model of the hydrothermal system in Long Valley Caldera, California, from magnetotellurics

Though shallow flow of hydrothermal fluids in Long Valley Caldera, California, has been well studied, neither the hydrothermal source reservoir nor heat source has been well characterized. Here a grid of magnetotelluric data were collected around the Long Valley volcanic system and modeled in 3-D. The preferred electrical resistivity model...

Peacock, Jared R.; Mangan, Margaret T.; McPhee, Darcy K.; Wannamaker, Phil E.
J.R. Peacock, M.T. Mangan, D. McPhee, and P.E. Wannamaker, 2016, Three-dimensional electrical resistivity model of the hydrothermal system in Long Valley Caldera, California, from magnetotellurics: Geophysical Research Letters,

Year Published: 2016

Geochemistry of the Black Sea during the last 15 kyr: A protracted evolution of its hydrography and ecology

The Black Sea is a 2200 m deep anoxic, marine sea connected to the Mediterranean Sea via the Dardanelles Strait, Marmara Sea, and the 3 km wide, 35 m deep Bosphorus Strait. The biogeochemistry of sediment from the Anatolia slope has recorded changes to the hydrography leading up to and following the input of Mediterranean water at ~9.4 ka (103 ...

Piper, David Z.
Piper, D.Z., 2016, Geochemistry of the Black Sea during the last 15 kyr; a protracted evolution of its hydrography and ecology: Paleoceanography.

Year Published: 2016

Late Neogene deformation of the Chocolate Mountains Anticlinorium: Implications for deposition of the Bouse Formation and early evolution of the Lower Colorado River

Deformation related to late Neogene dextral shear can explain a shift from an estuarine to lacustrine depositional environment in the southern Bouse Formation north of Yuma, Arizona. We infer that late Neogene deformation in the Chocolate Mountain Anticlinorium (CMA) created a barrier that blocked an estuary inlet, and that pre-existing and...

Beard, Sue; Haxel, Gordon B.; Dorsey, Rebecca J.; McDougall, Kristin A.; Jacobsen, Carl E.

Year Published: 2016

The Provo shoreline of Lake Bonneville: Chapter 7

G.K. Gilbert studied the Bonneville basin 150 years ago and his findings have largely stood the test of time: The Provo shoreline, the most prominent geomorphic feature of Lake Bonneville, reflects threshold-stabilized overflow of the lake after the Bonneville flood and before a drier climate caused the lake to shrink. Subsequent refinements in...

Miller, David
D.M. Miller, The Provo Shoreline of Lake Bonneville, Developments in Earth Surface Processes, Volume 20, 2016, Pages 127-144, ISSN 0928-2025, http://dx.doi.org/10.1016/B978-0-444-63590-7.00007-X.

Year Published: 2016

Spatial database for a global assessment of undiscovered copper resources: Chapter Z in Global mineral resource assessment

As part of the first-ever U.S. Geological Survey global assessment of undiscovered copper resources, data common to several regional spatial databases published by the U.S. Geological Survey, including one report from Finland and one from Greenland, were standardized, updated, and compiled into a global copper resource database. This integrated...

Zientek, Michael L.; Hammarstrom, Jane M.; Johnson, Kathleen M.; Dicken, Connie L.; Dunlap, Pamela; Parks, Heather L.; Hammarstrom, Jane M.; Zientek, Michael L.
Dicken, C.L., Dunlap, Pamela, Parks, H.L., Hammarstrom, J.M., and Zientek, M.L., 2016, Spatial database for a global assessment of undiscovered copper resources: U.S. Geological Survey Scientific Investigations Report 2010–5090–Z, 29 p., and GIS data, available at http://dx.doi.org/10.3133/sir20105090Z.

Year Published: 2016

Aeromagnetic map of northwest Utah and adjacent parts of Nevada and Idaho

Two aeromagnetic surveys were flown to promote further understanding of the geology and structure in northwest Utah and adjacent parts of Nevada and Idaho by serving as a basis for geophysical interpretations and by supporting geological mapping, water and mineral resource investigations, and other topical studies. Although this area is in general...

Langenheim, Victoria

Year Published: 2016

GIS methodology for geothermal play fairway analysis: Example from the Snake River Plain volcanic province

Play fairway analysis in geothermal exploration derives from a systematic methodology originally developed within the petroleum industry and is based on a geologic and hydrologic framework of identified geothermal systems. We are tailoring this methodology to study the geothermal resource potential of the Snake River Plain and surrounding region....

DeAngelo, Jacob; Shervais, John W.; Glen, Jonathan; Nielson, Dennis L.; Garg, Sabodh; Dobson, Patrick; Gasperikova, Erika; Sonnenthal, Eric; Visser, Charles; Liberty, Lee M.; Siler, Drew; Evans, James P.; Santellanes, Sean

Filter Total Items: 119
Red Mountain, Colorado
2016 (approx.)
Intensely altered propylitic rocks (red and yellow) in the Red Mountain mining district, overprinting the regional, propylitically altered igneous rocks (grayish-green), peaks at top of image. View to west .
heavy mineral sands
2016 (approx.)
Layers of unconsolidated heavy mineral sands along the shores of Folly beach, South Carolina.
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 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 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 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...
Filter Total Items: 120
Illustrated map of Iran showing various mining sites and refining/smelting plants of nonfuel minerals.
July 11, 2016

The USGS released a publication highlighting the nonfuel minerals industry of Iran. 

USGS
July 7, 2016

Alaska is a major producer of base and precious metals and has a high potential for additional undiscovered mineral resources. However, discovery is hindered by Alaska’s vast size, remoteness and rugged terrain. New methods are needed to overcome these obstacles in order to evaluate Alaska’s geology and mineral resource potential.

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.