Search Results - "Budahn, James R."

Geochemical evidence for African dust and volcanic ash inputs to terra rossa soils on carbonate reef terraces, northern Jamaica, West Indies by Muhs, Daniel R., Budahn, James R.

“…The origin of red or reddish-brown, clay-rich, “terra rossa” soils on limestone has been debated for decades. A traditional qualitative explanation for their…”
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Compositions of modern dust and surface sediments in the Desert Southwest, United States by Reheis, Marith C., Budahn, James R., Lamothe, Paul J., Reynolds, Richard L.

“…Modern dusts across southwestern United States deserts are compositionally similar to dust‐rich Av soil horizons (depths of 0–0.5 cm and 1–4 cm at 35 sites)…”
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Accumulation of impact markers in desert wetlands and implications for the Younger Dryas impact hypothesis by Pigati, Jeffrey S, Latorre, Claudio, Rech, Jason A, Betancourt, Julio L, Martínez, Katherine E, Budahn, James R

“…The Younger Dryas impact hypothesis contends that an extraterrestrial object exploded over North America at 12.9 ka, initiating the Younger Dryas cold event,…”
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Geochemical evidence for African dust inputs to soils of western Atlantic islands: Barbados, the Bahamas, and Florida by Muhs, Daniel R., Budahn, James R., Prospero, Joseph M., Carey, Steven N.

“…We studied soils on high‐purity limestones of Quaternary age on the western Atlantic Ocean islands of Barbados, the Florida Keys, and the Bahamas. Potential…”
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Origin of the Sinai–Negev erg, Egypt and Israel: mineralogical and geochemical evidence for the importance of the Nile and sea level history by Muhs, Daniel R., Roskin, Joel, Tsoar, Haim, Skipp, Gary, Budahn, James R., Sneh, Amihai, Porat, Naomi, Stanley, Jean-Daniel, Katra, Itzhak, Blumberg, Dan G.

“…The Sinai–Negev erg occupies an area of 13,000 km2 in the deserts of Egypt and Israel. Aeolian sand of this erg has been proposed to be derived from the Nile…”
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Soil genesis on the island of Bermuda in the Quaternary: The importance of African dust transport and deposition by Muhs, Daniel R., Budahn, James R., Prospero, Joseph M., Skipp, Gary, Herwitz, Stanley R.

“…The origin of terra rossa, red or reddish‐brown, clay‐rich soils overlying high‐purity carbonate substrates, has intrigued geologists and pedologists for…”
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Ibex Hollow Tuff from ca. 12 Ma supereruption, southern Idaho, identified across North America, eastern Pacific Ocean, and Gulf of Mexico by Sarna-Wojcicki, Andrei M, Knott, Jefferey R, Westgate, John A, Budahn, James R, Barron, John, Bray, Colin J, Ludvigson, Greg A, Meyer, Charles E, Miller, David M, Otto, Rick E, Pearce, Nicholas J. G, Smith, Charles C, Walkup, Laura C, Wan, Elmira, Yount, James

“…The Ibex Hollow Tuff, 12.08 ± 0.03 Ma (40Ar/39Ar), is a widespread tephra layer erupted from the Bruneau-Jarbidge volcanic field of southern Idaho. Tephra from…”
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The 2003 phreatomagmatic eruptions of Anatahan volcano—textural and petrologic features of deposits at an emergent island volcano by Pallister, John S., Trusdell, Frank A., Brownfield, Isabelle K., Siems, David F., Budahn, James R., Sutley, Steven F.

“…Stratigraphic and field data are used in conjunction with textural and chemical evidence (including data from scanning electron microscope, electron…”
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Loess origin, transport, and deposition over the past 10,000 years, Wrangell-St. Elias National Park, Alaska by Muhs, Daniel R, Budahn, James R, McGeehin, John P, III, EArthur Bettis, Skipp, Gary, Paces, James B, Wheeler, Elisabeth A

“…Contemporary glaciogenic dust has not received much attention, because most research has been on glaciogenic dust of the last glacial period or non-glaciogenic…”
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Radionuclides, trace elements, and radium residence in phosphogypsum of Jordan by Zielinski, Robert A., Al-Hwaiti, Mohammad S., Budahn, James R., Ranville, James F.

“…Voluminous stockpiles of phosphogypsum (PG) generated during the wet process production of phosphoric acid are stored at many sites around the world and pose…”
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Mode of occurrence and environmental mobility of oil-field radioactive material at US Geological Survey research site B, Osage-Skiatook Project, northeastern Oklahoma by Zielinski, Robert A., Budahn, James R.

“…Two samples of produced-water collected from a storage tank at US Geological Survey research site B, near Skiatook Lake in northeastern Oklahoma, have activity…”
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Geochemical evidence for diversity of dust sources in the southwestern United States by Reheis, Marith C, Budahn, James R, Lamothe, Paul J

“…Several potential dust sources, including generic sources of sparsely vegetated alluvium, playa deposits, and anthropogenic emissions, as well as the area…”
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New geochemical evidence for the origin of North America's largest dune field, the Nebraska Sand Hills, central Great Plains, USA by Muhs, Daniel R., Budahn, James R.

“…The Nebraska Sand Hills region is the largest dune field in North America and has diverse aeolian landforms. It has been active during both the late…”
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Kilauea East Rift Zone Magmatism: an Episode 54 Perspective by THORNBER, CARL R., HELIKER, CHRISTINA, SHERROD, DAVID R., KAUAHIKAUA, JAMES P., MIKLIUS, ASTA, OKUBO, PAUL G., TRUSDELL, FRANK A., BUDAHN, JAMES R., RIDLEY, W. IAN, MEEKER, GREGORY P.

“…On January 29–30, 1997, prolonged steady-state effusion of lava from Pu'u'O'o was briefly disrupted by shallow extension beneath Napau Crater, 1–4 km uprift of…”
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Geochemical evidence for African dust inputs to soils of western Atlantic Islands : Barbados, the Bahamas, and Florida by MUHS, Daniel R, BUDAHN, James R, PROSPERO, Joseph M, CAREY, Steven N

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Radionuclides in fly ash and bottom ash: improved characterization based on radiography and low energy gamma-ray spectrometry by Zielinski, Robert A., Budahn, James R.

“…Two radiation-based techniques for determining the distribution and relative abundance of radionuclides are described, and applied to a suite of fly ash and…”
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The antiquity of the Sahara Desert: New evidence from the mineralogy and geochemistry of Pliocene paleosols on the Canary Islands, Spain by Muhs, Daniel R., Meco, Joaquín, Budahn, James R., Skipp, Gary L., Betancort, Juan F., Lomoschitz, Alejandro

“…The Sahara is the largest warm desert in the world, but its age has been controversial, with estimates ranging from Miocene to Holocene. Mineralogical and…”
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Long-term African dust delivery to the eastern Atlantic Ocean from the Sahara and Sahel regions: Evidence from Quaternary paleosols on the Canary Islands, Spain by Muhs, Daniel R., Meco, Joaquín, Budahn, James R., Skipp, Gary L., Simmons, Kathleen R., Baddock, Matthew C., Betancort, Juan F., Lomoschitz, Alejandro

“…Africa is the most important source of dust in the world today and dust storms from that continent frequently deposit sediment on the nearby Canary Islands…”
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Distribution and mode of occurrences of radionuclides in phosphogypsum from the Aqaba and Eshidiya fertilizer plants, Jordan by Al-hwaiti, Mohammad S, Zielinski, Robert A, Budahn, James R, Ranville, James F, Ross, Philippe E

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Geochemical evidence for seasonal controls on the transportation of Holocene loess, Matanuska Valley, southern Alaska, USA by Muhs, Daniel R., Budahn, James R., Skipp, Gary L., McGeehin, John P.

“…Loess is a widespread Quaternary deposit in Alaska and loess accretion occurs today in some regions, such as the Matanuska Valley. The source of loess in the…”
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