Search Results - "A. L. Grunder"

Changing Mantle Sources and the Effects of Crustal Passage on the Steens Basalt, SE Oregon: Chemical and Isotopic Constraints by N. E. Moore, A. L. Grunder, W. A. Bohrson, R. W. Carlson, I. N. Bindeman

“…Abstract Continental flood basalts are more prone to compositional modification from passage through thicker and (or) more felsic crust in comparison to their…”
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Textural and Thermal History of Partial Melting in Tonalitic Wallrock at the Margin of a Basalt Dike, Wallowa Mountains, Oregon by PETCOVIC, H. L., GRUNDER, A. L.

“…Columbia River Basalt Group dikes invade biotite–hornblende tonalite to granodiorite rocks of the Wallowa Mountains. Most dikes are strongly quenched against…”
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The three-stage petrochemical evolution of the Steens Basalt (southeast Oregon, USA) compared to large igneous provinces and layered mafic intrusions by Moore, N. E, Grunder, A. L, Bohrson, W. A

“…The Steens Basalt, southeast Oregon, USA, initiated at 17 Ma as the earliest pulse of the Columbia River Flood Basalt of the northwestern USA. New and existing…”
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Crystallization and welding variations in a widespread ignimbrite sheet; the Rattlesnake Tuff, eastern oregon, USA by STRICK, M. J, GRUNDER, A. L

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Mantle source provinces beneath the Northwestern USA delimited by helium isotopes in young basalts by Graham, D.W., Reid, M.R., Jordan, B.T., Grunder, A.L., Leeman, W.P., Lupton, J.E.

“…We report new He, Nd and Sr isotope results for basalts from the northwestern United States. The new 3He/ 4He results for olivine phenocrysts in basalts from…”
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Enrichment of basalt and mixing of dacite in the rootzone of a large rhyolite chamber: inclusions and pumices from the Rattlesnake Tuff, Oregon by Streck, Martin J., Grunder, Anita L.

“…A variety of cognate basalt to basaltic andesite inclusions and dacite pumices occur in the 7-Ma Rattlesnake Tuff of eastern Oregon. The tuff represents ∼280…”
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The making of intermediate composition magma in a bimodal suite: Duck Butte Eruptive Center, Oregon, USA by Johnson, Jenda A, Grunder, Anita L

“…The 10.4-Ma Duck Butte Eruptive Center (DBEC) of southeastern Oregon is anomalous within the High Lava Plains bimodal basalt/high-silica rhyolite province in…”
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Evolution of calc-alkaline volcanism and associated hydrothermal gold deposits at Yanacocha, Peru by Longo, Anthony A, Dilles, John H, Grunder, Anita L, Duncan, Robert

“…Clusters of high-sulfidation epithermal deposits containing more than 50 Moz of gold are hosted by advanced argillic-altered Miocene volcanic rocks in the…”
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Low delta 180 silicic volcanic rocks at the Calabozos Caldera Complex, Southern Andes. Evidence for upper-crustal contamination by GRUNDER, A. L

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Geochronology of age-progressive volcanism of the Oregon High Lava Plains: Implications for the plume interpretation of Yellowstone by Jordan, Brennan T., Grunder, Anita L., Duncan, Robert A., Deino, Alan L.

“…The High Lava Plains province (HLP) is a late Cenozoic bimodal volcanic field at the northern margin of the Basin and Range province in southeastern Oregon…”
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Experimental and textural investigation of welding: effects of compaction, sintering, and vapor-phase crystallization in the rhyolitic Rattlesnake Tuff by Grunder, Anita L., Laporte, Didier, Druitt, Tim H.

“…The abrupt changes in character of variably welded pyroclastic deposits have invited decades of investigation and classification. We conducted two series of…”
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Editorial by Streck, M. J., Grunder, A. L.

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Mantle contribution to the evolution of Middle Tertiary silicic magmatism during early stages of extension: the Egan Range volcanic complex, east-central Nevada by FEELEY, Todd C, GRUNDER, Anita L

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