Rosalind Tuthill Helz, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 47
A catalogue of drill core recovered from Kilauea Iki lava lake, from 1967 to 1979 A catalogue of drill core recovered from Kilauea Iki lava lake, from 1967 to 1979
The purpose of this report is to serve as a descriptive catalogue for drill core recovered from Kilauea Iki lava lake, from 1967 to 1979. Kilauea Iki lava lake was formed when lavas of the 1959 summit eruption were ponded in Kilauea Iki pit crater, a large pit crater at the extreme upper end of Kilauea's east rift zone (Fig. 1). This eruption is one of the best documented of Kilauean...
Authors
Rosalind Tuthill Helz, Norman G. Banks, Thomas J. Casadevall, Richard S. Fiske, R. B. Moore
Bedrock geologic map of the vent system for the Ice Harbor Member of the Saddle Mountains Basalt, Ice Harbor Dam-Basin City area, southeast Washington Bedrock geologic map of the vent system for the Ice Harbor Member of the Saddle Mountains Basalt, Ice Harbor Dam-Basin City area, southeast Washington
No abstract available.
Authors
Donald A. Swanson, Rosalind Tuthill Helz
Major oxide, trace element, and glass chemistry of Columbia River basalt samples collected between 1971 and 1977 Major oxide, trace element, and glass chemistry of Columbia River basalt samples collected between 1971 and 1977
In this report we are making available all chemical analyses of whole rocks and selected glasses for samples of Columbia River Basalt that we collected between 1971 and 1977 during reconnaissance geologic mapping of the Columbia Plateau.
Authors
Thomas L. Wright, Donald A. Swanson, Rosalind Tuthill Helz, G. R. Byerly
Reconnaissance geologic map of the Columbia River Basalt Group, Pullman and Walla Walla quadrangles, southeast Washington and adjacent Idaho Reconnaissance geologic map of the Columbia River Basalt Group, Pullman and Walla Walla quadrangles, southeast Washington and adjacent Idaho
No abstract available.
Authors
D. A. Swanson, T. L. Wright, V.E. Camp, J. N. Gardner, Rosalind Tuthill Helz, S.A. Price, M.E. Ross
Phase relations of basalts in their melting range at PH2O = 5 kb as a function of oxygen fugacity: Part I. Mafic phases Phase relations of basalts in their melting range at PH2O = 5 kb as a function of oxygen fugacity: Part I. Mafic phases
The phase relations of three basalts, the Picture Gorge tholeiite, the 1921 Kilauea olivine tholeiite, and the 1801 Hualalai alkali basalt, were studied at 5 kb water pressure, 680–1000°C, at the oxygen fugacities of the quartz-fayalite-magnetite (QFM) and hematite-magnetite (HM) buffers. In the range 680–850 °C, the crystalline assemblage on the QFM buffer is dominantly hornblende+...
Authors
Rosalind Tuthill Helz
Science and Products
Filter Total Items: 47
A catalogue of drill core recovered from Kilauea Iki lava lake, from 1967 to 1979 A catalogue of drill core recovered from Kilauea Iki lava lake, from 1967 to 1979
The purpose of this report is to serve as a descriptive catalogue for drill core recovered from Kilauea Iki lava lake, from 1967 to 1979. Kilauea Iki lava lake was formed when lavas of the 1959 summit eruption were ponded in Kilauea Iki pit crater, a large pit crater at the extreme upper end of Kilauea's east rift zone (Fig. 1). This eruption is one of the best documented of Kilauean...
Authors
Rosalind Tuthill Helz, Norman G. Banks, Thomas J. Casadevall, Richard S. Fiske, R. B. Moore
Bedrock geologic map of the vent system for the Ice Harbor Member of the Saddle Mountains Basalt, Ice Harbor Dam-Basin City area, southeast Washington Bedrock geologic map of the vent system for the Ice Harbor Member of the Saddle Mountains Basalt, Ice Harbor Dam-Basin City area, southeast Washington
No abstract available.
Authors
Donald A. Swanson, Rosalind Tuthill Helz
Major oxide, trace element, and glass chemistry of Columbia River basalt samples collected between 1971 and 1977 Major oxide, trace element, and glass chemistry of Columbia River basalt samples collected between 1971 and 1977
In this report we are making available all chemical analyses of whole rocks and selected glasses for samples of Columbia River Basalt that we collected between 1971 and 1977 during reconnaissance geologic mapping of the Columbia Plateau.
Authors
Thomas L. Wright, Donald A. Swanson, Rosalind Tuthill Helz, G. R. Byerly
Reconnaissance geologic map of the Columbia River Basalt Group, Pullman and Walla Walla quadrangles, southeast Washington and adjacent Idaho Reconnaissance geologic map of the Columbia River Basalt Group, Pullman and Walla Walla quadrangles, southeast Washington and adjacent Idaho
No abstract available.
Authors
D. A. Swanson, T. L. Wright, V.E. Camp, J. N. Gardner, Rosalind Tuthill Helz, S.A. Price, M.E. Ross
Phase relations of basalts in their melting range at PH2O = 5 kb as a function of oxygen fugacity: Part I. Mafic phases Phase relations of basalts in their melting range at PH2O = 5 kb as a function of oxygen fugacity: Part I. Mafic phases
The phase relations of three basalts, the Picture Gorge tholeiite, the 1921 Kilauea olivine tholeiite, and the 1801 Hualalai alkali basalt, were studied at 5 kb water pressure, 680–1000°C, at the oxygen fugacities of the quartz-fayalite-magnetite (QFM) and hematite-magnetite (HM) buffers. In the range 680–850 °C, the crystalline assemblage on the QFM buffer is dominantly hornblende+...
Authors
Rosalind Tuthill Helz