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Hydrogen concentration analyses using SIMS and FTIR: Comparison and calibration for nominally anhydrous minerals: HYDROGEN CONCENTRATION ANALYSES
[1] We report analyses of hydrogen abundance in experimentally annealed and natural mantle minerals using FTIR and use these data to establish calibration lines for measurement of H2O concentrationsExpand
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Pressure and temperature dependence of H solubility in forsterite: An implication to water activity in the Earth interior
Abstract We performed experiments at 2.5, 6 and 9 GPa, and temperatures ranging from 1000 to 1400 °C in enstatite saturated conditions in the MgO–SiO 2 –H 2 O system using a multi-anvil apparatus,Expand
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Petrogenesis of the crust‐mantle transition zone and the origin of lower crustal wehrlite in the Oman ophiolite
We studied trace element geochemistry and petrology of the crust-mantle transition zone (MTZ) in the Samail massif of the Oman ophiolite to constrain the location where different primitive magmas mixExpand
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Experimental determination of F and Cl partitioning between lherzolite and basaltic melt
We experimentally determined F and Cl partition coefficients together with that of 19 trace elements (including REE, U-Th, HFSE and LILE) between basaltic melt and lherzolite minerals: olivine,Expand
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Anomalous sulphur isotopes in plume lavas reveal deep mantle storage of Archaean crust
Basaltic lavas erupted at some oceanic intraplate hotspot volcanoes are thought to sample ancient subducted crustal materials. However, the residence time of these subducted materials in the mantleExpand
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Kinetics of antigorite dehydration: A real-time X-ray diffraction study
Antigorite dehydration has been studied in situ using time-resolved X-ray diffraction (XRD) in the 1.1–5.5 GPa pressure range. The sequence of XRD spectra reveals that the high-temperature stabilityExpand
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Simple mixing as the major control of the evolution of volcanic suites in the Ecuadorian Andes
Examination of an extensive major and trace element database for about 700 whole rocks from the Ecuadorian Andes reveals series of local trends typified by three volcanoes: Iliniza and Pichincha fromExpand
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Trace element partitioning between carbonatitic melts and mantle transition zone minerals: Implications for the source of carbonatites
Abstract The occurrence of CO2-rich lavas (carbonatites, kimberlites) and carbonate-rich xenoliths provide evidence for the existence of carbonatitic melts in the mantle. To model the chemicalExpand
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Phase relations and equation-of-state of aluminous Mg-silicate perovskite and implications for Earth's lower mantle
Abstract We have investigated the effect of Al3+ on the room-temperature compressibility of perovskite for stoichiometric compositions along the MgSiO3–AlO1.5 join with up to 25 mol% AlO1.5.Expand
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Ordering in double carbonates and implications for processes at subduction zones
We have studied cation ordering in dolomite in situ as a function of pressure, temperature, and experimental time using the multi-anvil apparatus and synchrotron radiation. Starting with orderedExpand
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