Mission Areas

Energy and Minerals

Mission Areas L2 Landing Page Tabs

Filter Total Items: 587
Year Published: 2016

Element concentrations in surface soils of the Coconino Plateau, Grand Canyon region, Coconino County, Arizona

This report provides the geochemical analyses of a large set of background soils collected from the surface of the Coconino Plateau in northern Arizona. More than 700 soil samples were collected at 46 widespread areas, sampled from sites that appear unaffected by mineralization and (or) anthropogenic contamination. The soils were analyzed for 47...

Van Gosen, Bradley S.
Van Gosen, B.S., 2016, Element concentrations in surface soils of the Coconino Plateau, Grand Canyon region, Coconino County, Arizona: U.S. Geological Survey Open-File Report 2016–1160, 9 p. http://dx.doi.org/10.3133/ofr20161160.

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

Filter Total Items: 112
Image shows a cubical sample of pyrite with a quartz crystal extending beneath it
2016 (approx.)
A sample of pyrite and quartz. Iron pyrite, also known as Fool's Gold due to its resemblance to gold, often occurs in quartz veins. Pyrite is an important source of sulfur dioxide, which is primarily used to create sulfuric acid, an important industrial acid. In fact, consumption of sulfuric acid has been regarded as one of the best indexes of a nation's industrial development. More sulfuric acid...
Image shows a sample of pyrrhotite against a black background
2016 (approx.)
Pyrrhotite is an iron sulfide mineral related to iron pyrite, which is one of the minerals known as Fool's Gold. Pyrrhotite, although not one of the Fool's Gold minerals, is sometimes called magnetic pyrite as it is weakly magnetic. It is most valued as a collectors mineral. Sample provided by Carlin Green, USGS. Sample originated from Eagle Mine, Michigan, and is 4.5cm in size.
Image shows a sample of rutile against a black background
2016 (approx.)
This is a sample of rutile, one of the primary mineral sources of titanium. While as a metal, titanium is well known for corrosion resistance and for its high strength-to-weight ratio, approximately 95% of titanium is consumed in the form of titanium dioxide (TiO 2 ), a white pigment used in paints, paper, and plastics. Read more about titanium here , and learn about the titanium industry here ...
Image shows a sample of axinite against a black background
2016 (approx.)
This is a sample of axinite with iron, making it ferroaxinite. Axinite is primarily used as a collectors mineral. Sample provided by Carlin Green, USGS. Sample originated from Puiva Mount, Russia, and is 3.0cm in size.
Image shows a sample of cerussite on a black background
2016 (approx.)
This sample is of the mineral cerussite, once an important source of lead for paints and pigments. With the phasing out of lead-based paints, cerussite is now mostly valued as a collectors mineral. Sample provided by Carlin Green, USGS. Sample originated from Mibladen, Morocco, and is 5.6cm in size.
Image shows a sample of clinozoisite against a black background
2016 (approx.)
This sample is clinozoisite, a calcium aluminum silicate mineral. It is mostly prized as a collectors mineral rather than a source of its industrial mineral commodities. Sample provided by Carlin Green, USGS. Sample originated from Hachupa, Pakistan, and is 6.0cm in size.
Image shows coal being loaded into trucks at a coal mine
2016 (approx.)
Coal is loaded into trucks at the Trapper Mine in northwest Colorado.
Image shows a sample of epidote and quartz against a black background
2016 (approx.)
Epidote is a silicate mineral used mostly as a semiprecious gemstone. Sample provided by Carlin Green, USGS. Sample originated from Prince of Wales Island, Alaska, and is 6.0cm in size.
Image shows a sample of gold against a black background
2016 (approx.)
A sample of native gold. Gold has been treasured since ancient times for its beauty and permanence. Most of the gold that is fabricated today goes into the manufacture of jewelry, but it also performs critical functions in computers, communications equipment, spacecraft, jet aircraft engines, and a host of other products. Read more about gold here . Sample provided by Carlin Green, USGS. Sample...
Image shows a sample of torbernite against a black background
2016 (approx.)
Torbernite is a copper phosphate mineral that contains uranium, making it somewhat radioactive. Although it can be used as a uranium ore, it's more valued as a collectors mineral. It can be used as a good indicator of uranium deposits, however. Sample provided by Carlin Green, USGS. Sample originated from Musonoi Mine, Democratic Republic of the Congo, and is 5.0cm in size.
Image shows a sample of augelite and quartz on a black background.
2016 (approx.)
A sample of augelite and quartz. Augelite is an aluminum phosphate mineral, primarily prized for collecting rather than as a source for its industrial mineral components. Sample provided by Carlin Green, USGS. Sample originated from Mundo Nuevo Mine, Peru, and is 3.7cm in size.
Image shows a sample of Apophyllite and Prehnite on a black background
2016 (approx.)
These two minerals are apophyllite and prehnite. Both apophyllite, the clear crystals, and prehnite, the green mineral, are primarily prized as collectors minerals. Sample provided by Carlin Green, USGS. Sample originated from Virginia Crushed Stone Quarry, Virginia, and is 4.6cm in size.
Filter Total Items: 113
Close up of Fluorite
April 4, 2017

Ever wondered what the difference between a rock and a mineral was? This EarthWord should cover it...

U.S. Air Force F-15E Strike Eagles
April 3, 2017

On an ordinary Tuesday in 2014, David Pineault, an economist at the Defense Logistics Agency (DLA), reviewed his specialized reports and came to a startling conclusion: the United States needed to increase its stockpile of a basic manufacturing material with military applications—yttrium oxide, a material used in laser rangefinders.

Close up of Chalcopyrite
April 1, 2017

Think you know which mineral Fool’s Gold is? You might be fooled...

Scientists taking soil samples
March 15, 2017

Alaska has considerable potential for undiscovered mineral resources, including critical minerals.

Dr. Christian Zimmerman, USGS Alaska Science Center Director
February 1, 2017

The U.S. Geological Survey is pleased to announce the selection of Dr. Christian Zimmerman as the new director of their Alaska Science Center in Anchorage, Alaska. Zimmerman succeeds Dr. Mark Shasby who held the position for the past six years.

USGS logo
January 31, 2017

United States mines in 2016 produced an estimated $74.6 billion of raw mineral materials, a slight increase from 2015, the U.S. Geological Survey announced today. 

Moab, Utah, Potash In Situ Solution Mining and Solar Evaporation
November 15, 2016

A new USGS report summarizes the primary sources of potash in the United States. Potash is an essential nutrient that, along with phosphorus and nitrogen, is used as fertilizer for growing crops. 

Image shows an outline of the Midland Basin and assessment units on a Texas County Map
November 15, 2016

This is the largest estimate of continuous oil that USGS has ever assessed in the United States.