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Eruptive history within the vicinity of Al Madīnah in northern Harrat Rahat, Kingdom of Saudi Arabia
The northernmost part of the Harrat Rahat volcanic field contains early Pleistocene to Holocene mafic eruptive products within the vicinity of the city of Al Madīnah, Kingdom of Saudi Arabia. A detailed geologic investigation into the eruptive history of a 570 square kilometer (km2) area covering Al Madīnah and the surrounding area has yielded 33 mapped Quaternary volcanic units consisting of lava
Authors
Drew T. Downs, Mark E. Stelten, Duane E. Champion, Hannah R. Dietterich, Khalid Hassan, Jamal Shawali
Cenozoic tectonics of the western Arabia Plate related to harrat magmatism near Al Madīnah, Kingdom of Saudi Arabia
Sprawling volcanic fields, or harrats, in western Saudi Arabia have been emplaced during the past 30 million years following effusions of flood basalts in Ethiopia and Yemen. Although broadly associated with volcanism in three rift valleys (Red Sea, Gulf of Aden, and East African Rift Zone) radiating from the Afar depression, harrat abundance on the Arabian Peninsula indicates that volcanism is di
Authors
Andrew T. Calvert, Thomas W. Sisson
The Saudi Geological Survey-U.S. Geological Survey northern Harrat Rahat project—Styles, rates, causes, and hazards of volcanism near Al Madīnah al Munawwarah, Kingdom of Saudi Arabia
Active volcanic systems pose serious hazards to people and property including inundation and incineration by lava, blanketing by tephra (volcanic ash), exposure to noxious volcanic gases, and damage from shallow earthquakes triggered by ascending molten material (magma). To improve understanding of volcanism and associated seismicity on the western Arabia Plate, the Saudi Geological Survey and the
Authors
Thomas W. Sisson, Andrew T. Calvert, Walter D. Mooney
Active volcanism on the Arabian Shield—Geology, volcanology, and geophysics of northern Harrat Rahat and vicinity, Kingdom of Saudi Arabia
Active volcanic systems pose serious hazards to people and property including inundation and incineration by lava, blanketing by tephra (volcanic ash), exposure to noxious volcanic gases, and damage from shallow earthquakes triggered by ascending molten material (magma). To improve understanding of volcanism and associated seismicity on the western Arabia Plate, the Saudi Geological Survey and the
Ancient infrastructure offers sustainable agricultural solutions to dryland farming
For 1000 years, human populations in dryland regions of the North American Southwest (NAS) extensively constructed diverse forms of agricultural infrastructure, including canals, linear rock alignments, check dams, stock ponds, and other earthworks and rock structures. The long-term hydrological impacts of these and the demographic and socio-political drivers of construction and maintenance have y
Authors
Matthew C. Pailes, Laura M. Norman, Christopher H. Baisan, David Meko, Nicolas E. Gauthier, Jose Villanueva-Diaz, Jeff Dean, Jupiter Martinez, Nicholas V Kessler, Ron Towner
Geologic sources and well integrity impact methane emissions from orphaned and abandoned oil and gas wells
The 160-year history of oil and gas drilling in the United States has left a legacy of unplugged orphaned and abandoned wells, some of which are leaking methane and other hazardous chemicals into the environment. The locations of around 120,000 documented orphaned wells are currently known with the number of undocumented orphaned wells possibly ranging towards a million. The bulk of methane emissi
Authors
Nicholas J. Gianoutsos, Karl B. Haase, Justin E. Birdwell
Introduction to karst aquifers
No abstract available.
Authors
Eve L. Kuniansky, Charles J. Taylor, John H. Williams, Frederick Paillet
Conservation plan for golden eagles in eastern North America
No abstract available.
Authors
Todd E. Katzner, Tricia A. Miller, Andrew J. Dennhardt, Maxwell Field, Thomas Wittig, Elizabeth Mojica, Michael J. Lanzone, Mark S. Martell, Richard M. Bailey, Andrew Berry, Renee Dillard, David Brandes, David F. Brinker, Bracken Brown, Erynn M. Call, Jeffrey Cooper, Adam E. Duerr, Christopher J Farmer, Shilo K. Felton, Julie Garvin, Rolf Gubler, Sergio R. Harding, Michael Jones, Christine A. Kelly, Hardy Kern, Netawn Kiogima, Craig A. Koppie, Jerome Lemaitre, Mercedes Maddox, Scott Mehus, Joel Merriman, Amy Mitchell, Bill Parsons, Evan Patrick, Nora P. Pennarola, Margaret Rheude, Casey Rucker, Scott Rush, Ryan Schmitz, Hank Seltzer, Vincent A. Slabe, Eric C. Soehren, Johnny Wills
The haunting raptor: Yellowstone’s golden eagles
For many who live in North America, when picturing an eagle, the image of a large magnificent bird with a distinct white head and tail comes to mind. Rightfully, the bald eagle has garnered much attention as a national symbol of the United States (US), nearly brought to extinction from widespread organochlorine pesticide use (e.g., DDT, dichloro- diphenyl- trichloroethane; Anderson 1972, Baril et
Authors
David B. Haines, Douglas W. Smith, Todd E. Katzner, Victoria J. Dreitz
Evaluation of stream capture related to groundwater pumping, Lower Humboldt River Basin, Nevada
The Humboldt River Basin is the only river basin that is contained entirely within the State of Nevada. The effect of groundwater pumping on the Humboldt River is not well understood. Tools are needed to determine stream capture and manage groundwater pumping in the Humboldt River Basin. The objective of this study is to estimate capture and storage change caused by groundwater withdrawals in the
Authors
Cara A. Nadler, Susan C. Rybarski, Hai Pham
Conventional rare earth element mineral deposits: The global landscape
Four conventional mineral deposit types—carbonatite, alkaline igneous, heavy mineral sand, and regolith-hosted ion-adsorption clay deposits—currently supply global markets with the rare earth elements (REEs) and rare earth oxides (REOs) necessary to meet the technological needs of global communities. The unique properties of REEs make them useful in a wide variety of applications, such as alloys,
Authors
Nora K. Foley, Robert A. Ayuso
Energy-related rare earth element sources
Energy-related materials such as coal, coal-bearing wastes, and coal combustion products are traditionally thought of as sources or by-products of electric power generation. Increasingly, these materials are considered resources for their content of rare earth elements (REEs) and other useful constituents. In this chapter, we examine the distribution, modes of occurrence, and relative extractabili
Authors
Allan Kolker, Liliana Lefticariu, Steven T. Anderson