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Filter Total Items: 646
Year Published: 2017

The late Cenozoic Eastern California Shear Zone after 25 years of study

No abstract available.

Miller, David; Nuriel, Perach
Miller, D.M., 2017, The late Cenozoic Eastern California Shear Zone after 25 years of study, in Reynolds, R.E., ed., Revisiting the Eastern California Shear Zone: California State University, Fullerton, Desert Studies Consortium, p. 45-54.

Year Published: 2017

Impact-related microspherules in Late Pleistocene Alaskan and Yukon “muck” deposits signify recurrent episodes of catastrophic emplacement

Large quantities of impact-related microspherules have been found in fine-grained sediments retained within seven out of nine, radiocarbon-dated, Late Pleistocene mammoth (Mammuthus primigenius) and bison (Bison priscus) skull fragments. The well-preserved fossils were recovered from frozen “muck” deposits (organic-rich silt) exposed within the...

Hagstrum, Jonathan T.; Firestone, Richard B.; West, Allen; Weaver, James C.; Bunch, Ted E.
Hagstrum, JT, Firestone, RB, West, A, Weaver, JC, and Bunch, TE (2017) Impact-related microspherules in Late Pleistocene Alaskan and Yukon “muck” deposits signify recurrent episodes of catastrophic emplacement. Scientific Reports 7:16620, DOI: 10.1038/s41598-017-16958-2.

Year Published: 2017

Introduction to the 2008 Circum-Arctic Resource Appraisal (CARA) professional paper

The amount of yet-to-find oil and gas in the high northern latitudes is one of the great uncertainties of future energy supply. The possibility of extensive new petroleum developments in the Arctic Ocean is of interest to the Arctic nations, to petroleum companies, and to those concerned with the delicate and changing Arctic environment. The U.S....

Moore, T.E.; Gautier, D.L.; Gautier, Donald L.; Moore, Thomas E.
Gautier, D.L., and Moore, T.E., 2017, Introduction to the 2008 Circum-Arctic Resource Appraisal (CARA) professional paper, chap. A of Moore, T.E., and Gautier, D.L., eds., The 2008 Circum-Arctic Resource Appraisal: U.S. Geological Survey Professional Paper 1824, 9 p., https://doi.org/10.3133/pp1824A.

Year Published: 2017

Lidar-revised geologic map of the Des Moines 7.5' quadrangle, King County, Washington

This map is an interpretation of a modern lidar digital elevation model combined with the geology depicted on the Geologic Map of the Des Moines 7.5' Quadrangle, King County, Washington (Booth and Waldron, 2004). Booth and Waldron described, interpreted, and located the geology on the 1:24,000-scale topographic map of the Des Moines 7.5'...

Tabor, Rowland W.; Booth, Derek B.
Tabor, R.W., and Booth, D.B., 2017, Lidar-revised geologic map of the Des Moines 7.5' quadrangle, King County, Washington: U.S. Geological Survey Scientific Investigations Map 3384, 17 p., 1 sheet, scale 1:24,000, https://doi.org/10.3133/sim3384.

Year Published: 2017

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...

Kelsey, Harvey M.; Ladinsky, Tyler C.; Staisch, Lydia; Sherrod, Brian; Blakely, Richard J.; Pratt, Thomas; Stephenson, William; Odum, Jackson K.; Wan, Elmira
Kelsey, H. M., Ladinsky, T. C., Staisch L., Sherrod, B. L., Blakely, R. J., Pratt, T. L.,… Wan, E. (2017). 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. Tectonics, 36, 2085–2107. https://doi.org/10.1002/ 2017TC004558

Year Published: 2017

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...

Hiza-Redsteer, Margaret M.; Wessells, Stephen M.
Redsteer, M.H., and Wessells, S.M., 2017, A record of change—Science and elder observations on the Navajo Nation: U.S. Geological Survey General Information Product 181, video, 25 minutes, https://doi.org/10.3133/gip181. [Video also available in Navajo language, 28 minutes.]

Year Published: 2017

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...

Siler, Drew; Zhang, Yingqi; Spycher, Nicolas F.; Dobson, Patrick; McClain, James S.; Gasperikova, Erika; Zierenberg, Robert A.; Schiffman, Peter; Ferguson, Colin; Fowler, Andrew; Cantwell, Carolyn
Siler, D.L., Zhang, Y., Spycher, N.F., Dobson, P.F., Mcclain, J.S., Gasperikova, E., Zierenberg, R.A., Schi, P., Ferguson, C., Fowler, A., Cantwell, C., 2017. Geothermics Play-fairway analysis for geothermal resources and exploration risk in the Modoc Plateau region. Geothermics 69, 15–33. https://doi.org/10.1016/j.geothermics.2017.04.003

Year Published: 2017

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 (...

Cocker, Mark D.; Orris, Greta J.; Dunlap, Pamela; Lipin, Bruce R.; Ludington, Steve; Ryan, Robert J.; Słowakiewicz, Mirosław; Spanski, Gregory T.; Wynn, Jeff; Yang, Chao
Cocker, M.D., Orris, G.J., and Dunlap, Pamela, with contributions from Lipin, B.R., Ludington, Steve, Ryan, R.J., Słowakiewicz, Mirosław, Spanski, G.T., Wynn, Jeff, and Yang, Chao, 2017, Geology and undiscovered resource assessment of the potash-bearing Pripyat and Dnieper-Donets Basins, Belarus and Ukraine: U.S. Geological Survey Scientific Investigations Report 2010–5090–BB, 116 p., and spatial data, https://doi.org/10.3133/sir20105090BB.

Year Published: 2017

Geologic map of the northern White Hills, Mohave County, Arizona

IntroductionThe northern White Hills map area lies within the Kingman Uplift, a regional structural high in which Tertiary rocks lie directly on Proterozoic rocks as a result of Cretaceous orogenic uplift and erosional stripping of Paleozoic and Mesozoic strata. The Miocene Salt Spring Fault forms the major structural boundary in the map area....

Howard, Keith A.; Priest, Susan S.; Lundstrom, Scott C.; Block, Debra L.
Howard, K.A., Priest, S.S., Lundstrom, S.C., and Block, D.L., 2017, Geologic map of the northern White Hills, Mohave County, Arizona: U.S. Geological Survey Scientific Investigations Map 3372, pamphlet 31 p., scale 1:50,000, https://doi.org/10.3133/sim3372.

Year Published: 2017

Quantifying the heterogeneity of the tectonic stress field using borehole data

The heterogeneity of the tectonic stress field is a fundamental property which influences earthquake dynamics and subsurface engineering. Self-similar scaling of stress heterogeneities is frequently assumed to explain characteristics of earthquakes such as the magnitude-frequency relation. However, observational evidence for such scaling of the...

Schoenball, Martin; Davatzes, Nicholas C.
[complete this] Schoenball, Martin, and Davatzes, Nicholas C., 2016, Quantifying the heterogeneity of the tectonic stress field using local and global borehole data: Journal of Geophysical Research, doi:10.1002/2017JB014370.

Year Published: 2017

10Be dating of late Pleistocene megafloods and Cordilleran Ice Sheet retreat in the northwestern United States

During the late Pleistocene, multiple floods from drainage of glacial Lake Missoula further eroded a vast anastomosing network of bedrock channels, coulees, and cataracts, forming the Channeled Scabland of eastern Washington State (United States). However, the timing and exact pathways of these Missoula floods remain poorly constrained, thereby...

Balbas, Andrea M.; Barth, Aaron M.; Clark, Peter U.; Clark, Jorie; Caffee, Marc A.; O'Connor, Jim E.; Baker, Victor R.; Konrad, Kevin; Bjornstad, Bruce
Balbas, A., Barth, A.M., Clark, P.U., Clark, J., Caffee, M, O’Connor, J.E., Baker, V.R., Konrad, K., Bjornstad, B.,2 017, 10Be dating of late-Pleistocene megafloods and Cordilleran ice-sheet retreat in the northwestern U.S. Geology. First published on May 8, 2017, doi:10.1130/G38956.1

Year Published: 2017

Microbial survival strategies in ancient permafrost: insights from metagenomics

In permafrost (perennially frozen ground) microbes survive oligotrophic conditions, sub-zero temperatures, low water availability and high salinity over millennia. Viable life exists in permafrost tens of thousands of years old but we know little about the metabolic and physiological adaptations to the challenges presented by life in frozen ground...

Mackelprang, Rachel; Burkert, Alexander; Haw, Monica; Mahendrarajah, Tara; Conaway, Christopher H.; Douglas, Thomas A.; Waldrop, Mark P.
The ISME Journal 11, 2305–2318 (2017)

Filter Total Items: 135
Close up of Silicon Carbide
March 23, 2017

Silicon Carbide

Mineral: Silicon Carbide
Mineral Origin: Sample donated by Norton Company
Primary Commodity: Silica (abrasive)
Primary Commodity Uses: Just as their name implies, abrasives are used to abrade, clean, etch, grind, polish, scour, or otherwise remove material

Close up of Tungsten Ore - Wolframite
March 23, 2017

Wolframite

Mineral: Wolframite
Primary Commodity: Tungsten
Primary Commodity Uses: Tungsten is one of the densest metals on the planet, and therefore gets used in metalworking and construction, as well as in heat sinks, weights, and even vibrating batteries.

Close up of Vanadinite
March 23, 2017

Vanadinite

Mineral: Vanadinite
Mineral Origin: J.C. Holmes Claim, Patagonia, AZ (Sample donated by G. van Oss)
Primary Commodity: Vanadium
Primary Commodity Uses: Vanadium is used mostly in metal alloys, primarily in car parts and jet engines. The United States is currently 100% reliant on foreign sources for vanadium used...

Close up of Bismuthinite
March 23, 2017

Bismuthinite

Primary Commodity: Bismuth

Primary Commodity Uses: Bismuth is the heaviest of the heavy metals and the only non-toxic one at that. As such, it’s seen a lot of use in replacements for lead, as well as in medications and atomic research.

Close up of Fluorite
March 23, 2017

Fluorite

Mineral: Fluorite
Mineral Origin: Cave-in-Rock District, IL (Sample donated by H.B. Wood)
Primary Commodity: Fluorspar 
Primary Commodity Uses: Fluorspar is used directly or indirectly to manufacture products such as aluminum, gasoline, insulating foams, refrigerants, steel, and uranium fuel. 

Close up of Rutile
March 23, 2017

Rutile

Mineral: Rutile
Primary Commodity: Titanium
Primary Commodity Uses: The vast majority of titanium is used in whiteners in the form of titanium oxide. Titanium metal makes up a comparatively small amount of the use for titanium, but as a metal it is used in metal coatings and medical implants.

Close up of Spodumene
March 23, 2017

Spodumene

Mineral origin: Hallman Beam Mine, Cherryville, NC
Primary mineral commodity: Lithium
Uses: batteries for cell phones, laptops, and electric and hybrid vehicles

Close up of Alumina-Zirconia
March 23, 2017

Alumina-Zirconia Abrasive

Mineral: Alumina-Zirconia Abrasive
Mineral Origin: Manufactured in Huntsville, AL (Sample on loan from J.B. Hedrick)
Primary Commodity: Aluminum and zirconia
Primary Commodity Uses: This abrasive is primarily used in metal casting and the foundry process

Close up of Chalcopyrite
March 23, 2017

Chalcopyrite

Mineral: Chalcopyrite
Mineral Origin: Bingham Canyon, UT
Primary Commodity: Copper
Primary Commodity Uses: Copper is used primarily in electronics, mostly in building construction and industrial electronics.

Full view of salt, sodium, chlorine sample
March 23, 2017

Salt, Sodium, Chlorine

Mineral: Halite (NaCl)
Primary mineral Commodity: Salt
Commodity Uses: Highway deicing accounted for about 44% of total salt consumed in 2016. Salt is also used as feedstock for chlorine and caustic soda manufacture; these two inorganic chemicals are used to make many consumer-related end-use products, such as polyvinyl chloride (PVC...

Close up of Sphalerite
March 23, 2017

Sphalerite

Sphalerite, zinc sulfide, is and has been the principal ore mineral in the world. Zinc uses range from metal products to rubber and medicines. Zinc alloys readily with other metals and is chemically active. On exposure to air, it develops a thin gray oxide film (patina), which inhibits deeper oxidation (corrosion) of the metal. The metal’s resistance to corrosion is an important characteristic...

Close up of Chromite
March 23, 2017

Chromite

Mineral: Chromite
Mineral Origin: Owings Mills, MD
Primary Commodity: Chromium
Primary Commodity Uses: Chromium mostly goes into stainless steel and other alloys, as well as in color pigments.

Filter Total Items: 129
Date published: October 1, 2017

New Uranium Mineral Named for USGS Scientist

Everyone’s seen the news–scientists discover a new species of fly and name it for Beyonce; scientists discover a new species of monkey and auction its name off; etc. Hundreds of new species of animals, plants, and other organisms are discovered and named every year. But did you know that dozens of minerals are discovered every year too?

Date published: September 25, 2017

Helicopter Study to Map Beneath Mountain Watershed Near Crested Butte

Editor:  In the public interest and in accordance with Federal Aviation Administration regulations, the USGS is announcing this low-level airborne project. Your assistance in informing the local communities is appreciated.

Date published: August 21, 2017

Stitching Together the New Digital Geologic Quilt of the United States

A carbonatite here, a glacial moraine there, a zig-zagging fault or two, even a behemoth of a batholith. The geology of the 50 States is an enormous patchwork of varied forms, beautiful in their variance but challenging to present as a single map.

Date published: August 11, 2017

MEDIA ADVISORY: Upcoming Low-Level Flights in Oklahoma to Image Unmapped Faults and Underground Geology

Editor:  In the public interest and in accordance with Federal Aviation Administration regulations, the USGS is announcing this low-level airborne project.  Your assistance in informing the local communities is appreciated.

Date published: August 3, 2017

USGS Assesses Billions of Potential Potash Resources in Ukraine

The Dnieper-Donets Basin of Ukraine could contain an estimated 4.3 billion tons of undiscovered potassium-bearing salt according to a recent U.S. Geological Survey assessment. In addition, previous estimates show that the nearby Pripyat Basin of Belarus could contain 80–200 billion metric tons of undiscovered potash resources.

Date published: July 17, 2017

USGS Releases Three Approaches for Estimating Recovery Factors in Carbon Dioxide Enhanced Oil Recovery

The U.S. Geological Survey has evaluated three methods for estimating how much oil and gas could be produced by injecting carbon dioxide (CO2) into petroleum reservoirs.

Date published: July 17, 2017

Rich, Attractive, and Extremely Shallow

No, it’s not a title for a new reality-dating TV show, but it is real science! It also describes the ideal mineral deposit.

Date published: June 29, 2017

Slag-What is it Good for?

Slag. Depending on where you’re from, it may be an insult, a term meaning trash, or, in our case, the waste left over from metal smelting or refining. Outside of the construction industry, it might seem that uses for slag are considered limited.

Date published: June 9, 2017

Bringing Science to Bear at the Cinnabar Mine

At USGS, although the rocks we study are millions of years old, our scientific methods are cutting edge! Here's just one example of how we use creative problem-solving to help crystalize a solution to a complex issue.

Date published: May 24, 2017

Igniting a New Trend in Public Safety

U.S. Geological Survey scientists and partners are taking technology to the next level, using unmanned aircraft systems (UAS), commonly called drones, to acquire both fire intensity and emissions data during prescribed burns.

Date published: May 11, 2017

Magmas to Metals

No one wants to have an active volcano in their backyard (just ask Dionisio Pulido), but ancient eroded volcanoes can sometimes be literal goldmines for mineral ores.