Journal ArticleDOI
An isotopic study of siderites, dolomites and ankerites at high temperatures☆
J Rosenbaum,S.M.F Sheppard +1 more
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TLDR
In this paper, an empirically derived relationship between the chemical composition of a carbonate in the CaCO3-(Ca, Mg)(CO3)2-FeCO3 system and the function 103 In α at 100°C is 103 ∆ α = 8.94XCaCO3 + 9.29XMgCO3+ 8.77XFeCo3 where Xi is the mole percent of component i in the carbonate.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1986-06-01. It has received 768 citations till now. The article focuses on the topics: Carbonate & Ankerite.read more
Citations
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Measurement of light stable isotope ratios by SIMS
TL;DR: In this paper, the role of analyte chemical composition (matrix effect) on mass bias was investigated in sulfides (sulfur), silicates and oxides (oxygen), and carbonates(oxygen and carbon).
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Constraints on 87Sr/86Sr of Late Ediacaran seawater: insight from Siberian high-Sr limestones
TL;DR: In this article, a facies-independent, upward rise in marine δ 13 C carb from −12‰ to −7‰ was observed in SE Siberia, and the trend and magnitude of the values mimic those that are characteristic of the 600-550 Ma Shuram-Wonoka isotope event.
Journal ArticleDOI
Genesis of Vein Stockwork and Sedimentary Magnesite and Hydromagnesite Deposits in the Ultramafic Terranes of Southwestern Turkey: A Stable Isotope Study
TL;DR: In this article, the authors investigated the sources of carbonate in vein stockworks and lacustrine developments in the partially serpentinized, discontinuous ultramafic belts of southwestern Turkey.
Journal ArticleDOI
Carbonates in CM2 chondrites: constraints on alteration conditions from oxygen isotopic compositions and petrographic observations
Gretchen Benedix,Laurie A. Leshin,James Farquhar,James Farquhar,Teresa L. Jackson,Mark H. Thiemens +5 more
TL;DR: In this article, high-precision measurements of the oxygen isotopic compositions of carbonates (calcite and dolomite) from five CM2 chondrites are presented and put into context of the previously determined mineralogic alteration index (MAI), which places these meteorites into an alteration sequence.
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Normalization of stable isotope data for carbonate minerals: Implementation of IUPAC guidelines
TL;DR: In this article, the authors proposed a normalization protocol for carbonates using the IUPAC-recommended δ18O values of calcite reference materials and the carbonate samples.
References
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Journal ArticleDOI
Isotopic standards for carbon and oxygen and correction factors for mass-spectrometric analysis of carbon dioxide
TL;DR: In this paper, Niee's and Solenhofen standards were compared to the Chicago PDB standard for carbon and oxygen isotope ratios, and the correction factors for instrumental effects and for the nature of the mass spectra were derived.
Journal ArticleDOI
On the Isotopic Chemistry of Carbonates and a Paleotemperature Scale
TL;DR: In this paper, the temperature variation of the fractionation of oxygen in exchange reactions between dissolved carbonate and water and between calcite and water was calculated on theoretical grounds, and checked experimentally.
Journal ArticleDOI
The use of bromine pentafluoride in the extraction of oxygen from oxides and silicates for isotopic analysis
TL;DR: In this paper, a technique was developed in which bromine pentafluoride was used as a reagent for quantitative liberation of oxygen from oxides and silicates, and the results of isotopic analyses were compared with measurements made in other laboratories by other procedures.
Journal ArticleDOI
Measurement of O18O16 ratios of total oxygen of carbonates
TL;DR: The commonly used phosphoric acid procedure for the determination of oxygen isotope abundances in carbonates involves a large kinetic isotope effect as mentioned in this paper, which leads to an overestimate of the dolomite-calcite oxygon isotope fractionation by 0.8 per mil.
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