John S. Pallister (Former Employee)
Science and Products
Filter Total Items: 53
Pre-1991 sulfur transfer between mafic injections and dacite magma in the Mt. Pinatubo reservoir
Before the 1991–1992 activity, a large andesite lava dome belonging to the penultimate Pinatubo eruptive period (Buag ∼ 500 BP) formed the volcano summit. Buag porphyritic andesite contains abundant amphibole-bearing microgranular enclaves of basaltic–andesite composition. Buag enclaves have lower K2O and incompatible trace element (LREE, U, Th) contents than mafic pulses injected in the Pinatubo
Authors
Muro A. Di, John S. Pallister, B. Villemant, Chris Newhall, M. Semet, M. Martinez, C. Mariet
Mount St. Helens Petrology Workshop
Following seismic activity in late September 2004, the current eruption of Mount St. Helens began with an explosive steam and ash emission on 1 October 2004, with hot dacite emerging from the crater floor on 11 October 2004. Nearly two years later, with more than 80 million cubic meters of erupted dacite, accompanied by rare explosions and predominantly shallow seismicity questions still remain ab
Authors
Michael C. Rowe, John S. Pallister, Anita Grunder
Vapor transfer prior to the October 2004 eruption of Mount St. Helens, Washington
Dome lavas from the 2004 eruption of Mount St. Helens show elevated Li contents in plagioclase phenocrysts at the onset of dome growth in October 2004. These cannot be explained by variations in plagioclase-melt partitioning, but require elevated Li contents in coexisting melt, a fact confirmed by measurements of Li contents as high as 207 µg/g in coexisting melt inclusions. Similar Li enrichment
Authors
A.J.R. Kent, J. Blundy, K. V. Cashman, K.M. Copper, C. Donnelly, John S. Pallister, M. Reagan, M.C. Rowe, Carl Thornber
Understanding Merapi-type volcanoes
"We have to understand volcano science to know what to monitor.” That simple statement by Antonius Ratdomopurbo, director of the Indonesian Center for Volcano Technology [Balai Penyelidikan dan Pengembangan‐Teknologi (BPPTK)],captured the spirit and content of a recent workshop about Merapi and Merapi‐type volcanoes.Merapi still is experiencing low levels of unrest, following a peak in eruptive ac
Authors
M.A. Purbawinata, Antonius Ratdomopurbo, John S. Pallister, B. Luehr, Chris Newhall
Geochemistry and Geochronology of Middle Tertiary Volcanic Rocks of the Central Chiricahua Mountains, Southeast Arizona
Middle Tertiary volcanic rocks of the central Chiricahua Mountains in southeast Arizona are the westernmost constituents of the Eocene-Oligocene Boot Heel volcanic field of southwestern New Mexico and southeastern Arizona. About two dozen volumetric ally and stratigraphically significant volcanic units are present in this area. These include large-volume, regionally distributed ash-flow tuffs and
Authors
Edward A. du Bray, John S. Pallister, Lawrence W. Snee
Area adjacent to the Turkey Creek caldera, Cochise County, Arizona— Analytic data and geologic sample catalog
No abstract available.
Authors
E. A. Du Bray, John S. Pallister
Geologic map of the Chiricahua Peak quadrangle, Cochise County, Arizona
No abstract available.
Authors
E. A. Du Bray, John S. Pallister
Geologic map of the Stanford Canyon quadrangle, Cochise County, Arizona
No abstract available.
Authors
E. A. Du Bray, John S. Pallister
Geologic map of the Rustler Park quadrangle, Cochise County, Arizona
No abstract available.
Authors
John S. Pallister, John S. Latta, E. A. Du Bray
Geologic map of the Fife Peak quadrangle, Cochise County, Arizona
No abstract available.
Authors
John S. Pallister, E. A. Du Bray
Stanford Canyon quadrangle, Cochise County, Arizona: Analytic data and geologic sample catalog
No abstract available.
Authors
Edward A. du Bray, John S. Pallister
Chiricahua Peak quadrangle, Cochise County, Arizona: Analytic data and geologic sample catalog
No abstract available.
Authors
Edward A. du Bray, Douglas B. Yager, John S. Pallister
Science and Products
- Publications
Filter Total Items: 53
Pre-1991 sulfur transfer between mafic injections and dacite magma in the Mt. Pinatubo reservoir
Before the 1991–1992 activity, a large andesite lava dome belonging to the penultimate Pinatubo eruptive period (Buag ∼ 500 BP) formed the volcano summit. Buag porphyritic andesite contains abundant amphibole-bearing microgranular enclaves of basaltic–andesite composition. Buag enclaves have lower K2O and incompatible trace element (LREE, U, Th) contents than mafic pulses injected in the PinatuboAuthorsMuro A. Di, John S. Pallister, B. Villemant, Chris Newhall, M. Semet, M. Martinez, C. MarietMount St. Helens Petrology Workshop
Following seismic activity in late September 2004, the current eruption of Mount St. Helens began with an explosive steam and ash emission on 1 October 2004, with hot dacite emerging from the crater floor on 11 October 2004. Nearly two years later, with more than 80 million cubic meters of erupted dacite, accompanied by rare explosions and predominantly shallow seismicity questions still remain abAuthorsMichael C. Rowe, John S. Pallister, Anita GrunderVapor transfer prior to the October 2004 eruption of Mount St. Helens, Washington
Dome lavas from the 2004 eruption of Mount St. Helens show elevated Li contents in plagioclase phenocrysts at the onset of dome growth in October 2004. These cannot be explained by variations in plagioclase-melt partitioning, but require elevated Li contents in coexisting melt, a fact confirmed by measurements of Li contents as high as 207 µg/g in coexisting melt inclusions. Similar Li enrichmentAuthorsA.J.R. Kent, J. Blundy, K. V. Cashman, K.M. Copper, C. Donnelly, John S. Pallister, M. Reagan, M.C. Rowe, Carl ThornberUnderstanding Merapi-type volcanoes
"We have to understand volcano science to know what to monitor.” That simple statement by Antonius Ratdomopurbo, director of the Indonesian Center for Volcano Technology [Balai Penyelidikan dan Pengembangan‐Teknologi (BPPTK)],captured the spirit and content of a recent workshop about Merapi and Merapi‐type volcanoes.Merapi still is experiencing low levels of unrest, following a peak in eruptive acAuthorsM.A. Purbawinata, Antonius Ratdomopurbo, John S. Pallister, B. Luehr, Chris NewhallGeochemistry and Geochronology of Middle Tertiary Volcanic Rocks of the Central Chiricahua Mountains, Southeast Arizona
Middle Tertiary volcanic rocks of the central Chiricahua Mountains in southeast Arizona are the westernmost constituents of the Eocene-Oligocene Boot Heel volcanic field of southwestern New Mexico and southeastern Arizona. About two dozen volumetric ally and stratigraphically significant volcanic units are present in this area. These include large-volume, regionally distributed ash-flow tuffs andAuthorsEdward A. du Bray, John S. Pallister, Lawrence W. SneeArea adjacent to the Turkey Creek caldera, Cochise County, Arizona— Analytic data and geologic sample catalog
No abstract available.AuthorsE. A. Du Bray, John S. PallisterGeologic map of the Chiricahua Peak quadrangle, Cochise County, Arizona
No abstract available.AuthorsE. A. Du Bray, John S. PallisterGeologic map of the Stanford Canyon quadrangle, Cochise County, Arizona
No abstract available.AuthorsE. A. Du Bray, John S. PallisterGeologic map of the Rustler Park quadrangle, Cochise County, Arizona
No abstract available.AuthorsJohn S. Pallister, John S. Latta, E. A. Du BrayGeologic map of the Fife Peak quadrangle, Cochise County, Arizona
No abstract available.AuthorsJohn S. Pallister, E. A. Du BrayStanford Canyon quadrangle, Cochise County, Arizona: Analytic data and geologic sample catalog
No abstract available.AuthorsEdward A. du Bray, John S. PallisterChiricahua Peak quadrangle, Cochise County, Arizona: Analytic data and geologic sample catalog
No abstract available.AuthorsEdward A. du Bray, Douglas B. Yager, John S. Pallister - Multimedia