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Orthopyroxene Fractionation in the Grande Ronde Basalt--Columbia River Basalt Group

机译：在Grande Ronde玄武岩中的Orthopyroxene分馏 - 哥伦比亚河玄武岩组

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Six orthopyroxenes were microprobed; five orthopyroxenes were from the Grande Ronde Basalt, and one was from the Buford flow of the Saddle Mountains Basalt. The orthopyroxenes are primarily bronzite in composition, but some analyses show that hypersthene is present. The reaction rims of all analyzed orthopyroxene crystals are pigeonite, while the groundmass pyroxene is both augite and pigeonite. Preliminary results from the least-squares linear modeling of the Grande Ronde Basalt indicate orthopyroxene is a necessary phase for mass balancing between flow compositions. Three models were tried in order to determine if selected mineral phases could be used to model the chemical compositions of the flows. These models suggest that orthopyroxene and plagioclase are phases common to the Grande Ronde Basalt. The similarity of orthopyroxene and plagioclase occurrences suggests that they are important intratelluric phases of the Grande Ronde Basalt which reacted out when the basaltic liquids were erupted at the surface. (ERA citation 04:037620)

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作者
Reidel, S. P.; Ross, M. E.; Long, P. E.;
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年度 1978
页码 1-12
总页数 12
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Columbia River Basin ; Pyroxenes ; Basalt ; Columbia River ; Fractionation ; Mineralogy ; Petrogenesis ; Radioactive waste disposal ; Underground disposal;

机译：哥伦比亚河流域;辉石;玄武岩;哥伦比亚河;分馏;矿物学;成因;放射性废物处理;地下处置;

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1. Response to Baksi, A., 2012, ‘New ~(40)Ar/~(39)Ar dating of the Grande Ronde lavas, Columbia River Basalts, USA: Implications for duration of flood basalt eruption episodes' by Barry et al., 2010-Discussion' [J] . T.L Barry, S. Self, S.P. Kelley Lithos: An International Journal of Mineralogy, Petrology, and Geochemistry . 2012,第Null期

机译：对Baksi，A.，2012年的回应：Barry等人的“新的（40）Ar /〜（39）Ar年代，美国哥伦比亚河玄武岩大朗德熔岩的定年：对洪水玄武岩喷发持续时间的影响”， 2010-讨论”
2. ’New ~(40)Ar/~(39)Ar dating of the Grande Ronde lavas, Columbia River Basalts, USA: Implications for duration of flood basalt eruption episodes‘ by Barry et al. (2010) - Discussion [J] . Ajoy K. Baksi Lithos: An International Journal of Mineralogy, Petrology, and Geochemistry . 2012,第Null期

机译：Barry等人的“美国哥伦比亚河玄武岩大朗德熔岩的新〜（40）Ar /〜（39）Ar年代：对洪水玄武岩喷发持续时间的影响”。（2010）-讨论
3. New ~(40)Ar/~(39)Ar dating of the Grande Ronde lavas, Columbia River Basalts, USA: Implications for duration of flood basalt eruption episodes [J] . T.L. Barry, S. Self, S.P. Kelley Lithos: An International Journal of Mineralogy, Petrology, and Geochemistry . 2010,第3a4期

机译：美国哥伦比亚河玄武岩大朗德熔岩的新〜（40）Ar /〜（39）Ar年代：对玄武岩爆发事件持续时间的影响
4. THE SCENIC WATERWAY ACT: A TYPE OF INSTREAM FLOW REQUIREMENT — CASE STUDY OF OREGON'S GRAND RONDE RIVER BASIN [C] . Laura A. Schroeder, Therese A. Ure, Nathan W. Forbes International Conference on Irrigation and Drainage . 2011

机译：风景秀丽的水道法：一种仪器流量要求 - 俄勒冈州大罗德河流域的案例研究
5. Origin of the Grande Ronde Formation flows, Columbia River flood basalt group. [D] . Durand, Sedelia Rodriguez. 2006

机译：大朗德组流的起源，哥伦比亚河洪水玄武岩群。
6. Rapid eruption of the Columbia River flood basalt and correlation with the mid-Miocene climate optimum [O] . Jennifer Kasbohm, Blair Schoene 2018

机译：哥伦比亚河洪水玄武岩的快速喷发及其与中新世中期最佳气候的关系
7. New ⁴⁰Ar/³⁹Ar dating of the Grande Ronde lavas, Columbia River Basalts, USA: Implications for duration of flood basalt eruption episodes [O] . Barry, T. L., Self, S., Kelley, S. P., 2010

机译：新的^{40 ar / ^{39 美国哥伦比亚河Basalts的Grande Ronde熔岩的年代测定：对洪水玄武岩喷发期的影响}}

Orthopyroxene Fractionation in the Grande Ronde Basalt--Columbia River Basalt Group

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