Search Results - "Hanson, Richard E."

Paleomagnetism of the 1.1 Ga Umkondo large igneous province in southern Africa by Gose, Wulf A., Hanson, Richard E., Dalziel, Ian W. D., Pancake, James A., Seidel, Emily K.

“…The Umkondo dolerites are present over a wide area in the Kalahari craton, southern Africa. Thirty‐nine sampling sites in Botswana and South Africa yielded…”
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Geochronology of basement rocks in the Kalahari Desert, Botswana, and implications for regional Proterozoic tectonics by Singletary, Steven J, Hanson, Richard E, Martin, Mark W, Crowley, James L, Bowring, Samuel A, Key, Roger M, Ramokate, Lepate V, Direng, Brets B, Krol, Michael A

“…U–Pb, 40 Ar/ 39 Ar , and Sm–Nd geochronological results from isolated basement exposures and drill-core samples in the Kalahari Desert, Botswana constrain the…”
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Tectonic evolution of the Zambezi orogenic belt: geochronological, structural, and petrological constraints from northern Zimbabwe by Hargrove, Ulysses S, Hanson, Richard E, Martin, Mark W, Blenkinsop, Thomas G, Bowring, Samuel A, Walker, Nicholas, Munyanyiwa, Hubert

“…In southern Africa, the Zambezi belt forms the eastern part of a transcontinental orogenic system that connects with the East African orogen and records…”
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Biochemical Characteristics of Organic Matter in a Guano Concretion of Late Miocene or Pliocene Age from Manchester Parish in Jamaica by Spence, Adrian, Hanson, Richard E., Johnson, Toni, Robinson, Claion, Annells, Richard N.

“…The biogeochemical fate of organic matter (OM) entering soils is an important issue that must be examined to better understand its roles in nitrogen cycling…”
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Intraplate magmatism related to opening of the southern Iapetus Ocean: Cambrian Wichita igneous province in the Southern Oklahoma rift zone by Hanson, Richard E., Puckett, Robert E., Keller, G. Randy, Brueseke, Matthew E., Bulen, Casey L., Mertzman, Stanley A., Finegan, Shane A., McCleery, David A.

“…Southern Oklahoma and adjacent parts of Texas contain an extensive igneous province emplaced during Early Cambrian rifting within the Southern Oklahoma rift…”
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Evidence for Late Cretaceous Volcanism in Trans‐Pecos Texas by Breyer, John A., Busbey III, Arthur B., Hanson, Richard E., Befus, Kenneth E., Griffin, William R., Hargrove, Ulysses S., Bergman, Steven C.

“…Cretaceous basaltic pyroclastic strata have been discovered in a fault block on the southern edge of the Rosillos Mountains laccolith in the Big Bend area of…”
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Assessment of the bioavailability of cadmium in Jamaican soils by Spence, Adrian, Hanson, Richard E., Grant, Charles N., Hoo Fung, Leslie, Rattray, Robin

“…Extraordinary geogenic concentrations of cadmium (Cd) have been reported for some Jamaican soils. However, the bioavailability of the metal in these soils…”
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Coeval Large-Scale Magmatism in the Kalahari and Laurentian Cratons during Rodinia Assembly by Hanson, Richard E., Crowley, James L., Bowring, Samuel A., Ramezani, Jahandar, Gose, Wulf A., Ian W. D. Dalziel, Pancake, James A., Seidel, Emily K., Blenkinsop, Thomas G., Mukwakwami, Joshua

“…We show that intraplate magmatism occurred 1106 to 1112 million years ago over an area of two million square kilometers within the Kalahari craton of southern…”
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Nonexplosive and explosive magma/wet-sediment interaction during emplacement of Eocene intrusions into Cretaceous to Eocene strata, Trans-Pecos igneous province, West Texas by Befus, Kenneth S., Hanson, Richard E., Miggins, Daniel P., Breyer, John A., Busbey, Arthur B.

“…Eocene intrusion of alkaline basaltic to trachyandesitic magmas into unlithified, Upper Cretaceous (Maastrichtian) to Eocene fluvial strata in part of the…”
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Formation of Billowed Structures Along Margins of Basaltic Intrusions: Insights from Big Bend National Park, Texas and 71 Gulch, Idaho by Galletly, Aaron J., Graettinger, Alison H., Hanson, Richard E.

“…Billowed margins of basaltic intrusions provide opportunity to study the conditions of non-explosive magma-pore water interactions and how magma propagates and…”
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Jurassic submarine arc-apron deposits and associated magma/wet-sediment interaction, northern Sierra Nevada, California by Templeton, Jeffrey H, Hanson, Richard E

“…Jurassic metavolcanic rocks of the Northern Sierra terrane in northern California are part of an extensive Triassic–Jurassic arc constructed along the western…”
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U–Pb and 40Ar/ 39Ar geochronological constraints on the tectonic evolution of the easternmost part of the Zambezi orogenic belt, northeast Zimbabwe by Vinyu, Michael L, Hanson, Richard E, Martin, Mark W, Bowring, Samuel A, Jelsma, Hielke A, Krol, Michael A, Dirks, Paul H.G.M

“…The Zambezi belt is a key segment of the network of Neoproterozoic/lower Paleozoic orogenic belts in southern Africa that formed during amalgamation of central…”
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Processes of magma/wet sediment interaction in a large-scale Jurassic andesitic peperite complex, northern Sierra Nevada, California by HANSON, R. E, HARGROVE, U. S

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Geochemistry of amphibolites and quartzofeldspathic gneisses in the Pan-African Zambezi belt, northwest Zimbabwe: evidence for bimodal magmatism in a continental rift setting by Munyanyiwa, Hubert, Hanson, Richard E., Blenkinsop, Thomas G., Treloar, Peter J.

“…The Zambezi belt separates the Congo and Kalahari cratons in southern Africa and is a key part of the regional Pan-African orogenic framework related to…”
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Miocene long-runout debris-avalanche deposits in the Eastern Pamir foreland basin record cataclasis and fragmentation mechanisms by Wei, Xiaochun, Chen, Hanlin, Zheng, Hongbo, Wang, Ping, Hanson, Richard E., Shi, Xuhua, Lin, Xiubin, Cheng, Xiaogan

“…The Miocene Aertashi Debris-Avalanche Deposits at the southwestern Tarim Basin, the foreland basin of the Eastern Pamir (NW Tibetan Plateau), have an…”
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The effects of microstructural changes on montmorillonite–microbial interactions by Spence, Adrian, Robinson, Claion, Hanson, Richard E.

“…•Effects of structural changes on montmorillonite–microbial interactions are studied.•Infrared spectroscopy and allied analytical techniques are…”
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Rift-related Jurassic basaltic phreatomagmatic volcanism in the central Transantarctic Mountains : precursory stage to flood-basalt effusion by HANSON, R. E, ELLIOT, D. H

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Petrology and Diagenesis of Sandstones in the Post Oak Formation (Permian) Southwestern Oklahoma by Zuhair Al-Shaieb, Richard E. Hanson

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Chilling and Brecciation of a Devonian Rhyolite Sill Intruded into Wet Sediments, Northern Sierra Nevada, California by Hanson, Richard E., Schweickert, Richard A.

“…Localized pockets of peperite breccia occur near the base of a well-exposed hypabyssal rhyolite sill within the Upper Devonian volcanic sequence of the…”
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Investigation of Power Line and Irrigation System Compatibility by Ewy, Keith A., Kallesen, Douglas R., Stetson, LaVerne E., Hanson, Richard E.

“…Irrigation nozzles have discharge characteristics that enable direct water stream contact with nearby power lines. Leakage current measurements using various…”
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