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Oxygen Isotope Variations of Basaltic Lavas and Upper Mantle Rocks
This chapter summarizes the oxygen isotope geochemistry of terrestrial basalts and their mantle sources, including the conceptual framework for interpreting such data and the phenomenology of knownExpand
13 C- 18 O bonds in carbonate minerals: A new kind of paleothermometer
The abundance of the doubly substituted CO2 isotopologue, 13 C 18 O 16 O, in CO2 produced by phosphoric acid digestion of synthetic, inorganic calcite and natural, biogenic aragonite is proportionalExpand
Defining an absolute reference frame for 'clumped' isotope studies of CO 2
We present a revised approach for standardizing and reporting analyses of multiply substituted isotopologues of CO2 (i.e., ‘clumped’ isotopic species, especially the mass-47 isotopologues). OurExpand
Rapid Uplift of the Altiplano Revealed Through 13C-18O Bonds in Paleosol Carbonates
The elevation of Earth's surface is among the most difficult environmental variables to reconstruct from the geological record. Here we describe an approach to paleoaltimetry based on independent andExpand
“Clumped-isotope” geochemistry—The study of naturally-occurring, multiply-substituted isotopologues
Clumped isotope geochemistry is concerned with the state of ordering of rare isotopes in natural materials. That is, it examines the extent to which rare isotopes (D, ^(13)C, ^(15)N, ^(18)O, etc.)Expand
Isotopic fractionations associated with phosphoric acid digestion of carbonate minerals: Insights from first-principles theoretical modeling and clumped isotope measurements
Phosphoric acid digestion has been used for oxygen- and carbon-isotope analysis of carbonate minerals since 1950, and was recently established as a method for carbonate ‘clumped isotope’ analysis.Expand
Oxygen isotope variations in ocean island basalt phenocrysts
Oxygen isotope ratios are reported for olivine phenocrysts from sixty-seven samples of ocean island basalts (OlBs), mid-ocean ridge basalts (MORBs), and related peridotites, including representativesExpand
Rise of the Andes
The surface uplift of mountain belts is generally assumed to reflect progressive shortening and crustal thickening, leading to their gradual rise. Recent studies of the Andes indicate that theirExpand
High-temperature environments of human evolution in East Africa based on bond ordering in paleosol carbonates
It is shown that the Turkana Basin, Kenya—today one of the hottest places on Earth— has been continually hot during the past 4 million years, and the distribution of 13C-18O bonds in paleosol carbonates indicates that soil temperatures during periods of carbonate formation were typically above 30 °C and often in excess of 35 °C. Expand
Methods and limitations of 'clumped' CO2 isotope (Delta47) analysis by gas-source isotope ratio mass spectrometry.
Detailed data and arguments regarding the theoretical and practical limits of precision, methods of standardization, instrument linearity and related issues for clumped-isotope analysis by dual-inlet gas-source isotope ratio mass spectrometry (IRMS) are presented. Expand