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Oxygen isotope fractionation in divalent metal carbonates
Equilibrium fractionation factors for the distribution of 18O between alkaline‐earth carbonates and water have been measured over the temperature range 0–500°C. The fractionation factors α can beExpand
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Oxygen isotope exchange between quartz and water
Equilibrium constants for oxygen isotope exchange between quartz and water have been measured from 195°C (1000 ln α = 12.0) to 750°C (1000 ln α = 0.4). Over limited temperature ranges the behavior ofExpand
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The effect of polymorphism and magnesium substitution on oxygen isotope fractionation between calcium carbonate and water.
Abstract Calcite, aragonite and magnesian calcite were slowly precipitated from aqueous bicarbonate solutions, and oxygen isotope fractionation factors between the precipitate and water wereExpand
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Oxygen isotopic fractionation in the system quartz-albite-anorthite-water
Abstract Oxygen isotopic fractionations have been determined between quartz and water, albite and water, and anorthite and water at temperatures from 300 to 825°C, and pressures from 1.5. to 25 kbar.Expand
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Oxygen Isotopes in Meteorites
Among all the c he mic al e le men ts, ox ygen has a co mbin ation of pro pe rtie s tha t ma kes it u nique ly im por ta nt in cosmoc hem is tr y. I t is a n abu nda nt e leme nt , a nd is t he prExpand
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Mechanisms of hydrothermal crystallization of quartz at 250°C and 15 kbar
Oxygen isotopic exchange between quartz and water, using a novel technique in which both 18O/16O and 17O/16O fractionations were measured, yielded an equilibrium fractionation Δ18 = 9.0 at 250°C andExpand
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The use of bromine pentafluoride in the extraction of oxygen from oxides and silicates for isotopic analysis
Abstract A technique has been developed in which bromine pentafluoride is used as a reagent for quantitative liberation of oxygen from oxides and silicates. For all of the rocks and mineralsExpand
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Oxygen isotope studies of achondrites
Abstract Oxygen isotope abundances provide a powerful tool for recognizing genetic relationships among meteorites. Among the differentiated achondrites, three isotopic groups are recognized: (l ) SNCExpand
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Oxygen and carbon isotope fractionations between CO2 and calcite
Abstract Oxygen and carbon isotopic fractionation factors have been measured by direct exchange between carbon dioxide and calcite over the temperature range 400–950°C at pressures of 1–13 kilobars.Expand
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Oxygen isotope studies of carbonaceous chondrites
Abstract The carbonaceous chondrites display the widest range of oxygen isotopic composition of any meteorite group, as a consequence of the interaction of primordial isotopic reservoirs in the solarExpand
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