Results 11 to 20 of about 13,004 (219)
An olivine-clinopyroxene geothermometer
Contributions to Mineralogy and Petrology, 1976 The olivine-clinopyroxene (Fe-Mg partition) geothermometer of Powell and Powell (1974) was derived on the basis of clinopyroxene mixing parameters which imply a large miscibility gap in CaFeSi2O6-CaMgSi2O6-CaAl2SiO6 clinopyroxenes at 950° C. Application of the Powell and Powell thermometer in an empirical way (ignoring likely errors in mixing ...
Powell, Roger, Powell, Marjorie
openaire +2 more sources
Compositional Data Analysis (CoDA) of Clinopyroxene From Abyssal Peridotites
Geochemistry, Geophysics, Geosystems, 2022 We analyze a large database of abyssal peridotite clinopyroxene compositions using log‐ratio transformation, principal component analysis (PCA) and k‐means clustering, to better understand clinopyroxene compositional systematics in abyssal peridotites ...
I. Nishio +5 more
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Natural Clinopyroxene Reference Materials for in Situ Sr Isotopic Analysis via LA-MC-ICP-MS
Frontiers in Chemistry, 2020 Clinopyroxene is a major host mineral for lithophile elements in the mantle lithosphere, and therefore, its origin is vital for constraints on mantle evolution and melt generation. In situ Sr isotopic measurement of clinopyroxene has been available since
Wen Zhang, Jin-Hui Yang, Hao Wang
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Nanoscale solid-fluid interaction and amphibole formation in the lithospheric mantle [PDF]
Scientific ReportsNanoscale amphibole nucleation and growth in the Earth’s mantle is poorly understood despite its important role in the evolution and stability of the lithosphere, along with its influence on the coexisting fluid composition.
Thomas Pieter Lange +7 more
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Clinopyroxene Dissolution Records Rapid Magma Ascent [PDF]
Frontiers in Earth Science, 2020 Magma ascent rates control volcanic eruption styles. However, the rates at which basaltic magmas ascend through the crust remain highly uncertain. Although recent studies have successfully exploited records of decompression driven degassing to estimate ...
David A. Neave, John Maclennan
doaj +4 more sources
Journal of Economic Geology, 2022 Introduction In the northeastern part of the Isfahan province and 65 km northeast of the Anarak city (Kal-e-Kafi area), an I-type granitoid pluton cross cut the Paleozoic metamorphic rocks and Eocene volcanic rocks. In the contact of this granitoid body
Hanan Salim +2 more
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Geophysical Monograph Series, Page 137-165., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Konstantin Litasov +3 more
wiley +3 more sources
Trace element thermometry of garnet-clinopyroxene pairs [PDF]
, 2016 We present major and trace element data on coexisting garnet and clinopyroxene from experiments carried out between 1.3 and 10 GPa and 970 and 1400 °C.
JD Blundy (15955763) +2 more
core +7 more sources
Геодинамика и тектонофизика, 2022 The mantle paleogeotherm under the Obnazhennaya kimberlite pipe (Kuoika field, Siberian craton) was reconstructed using the chemical composition of clinopyroxene xenocrystals and the FITPLOT program.
E. A. Muravjeva +5 more
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Journal of Economic Geology, 2020 Introduction The Aliabad area is located in the northwest of Nain. Volcanic rocks of the Aliabad area have andesitic to rhyolitic composition. On the basis of petrographic investigations, porphyritic texture is the main texture of these rocks.
Rezvan Mehvari, Mortaza Sharifi
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