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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Evolution of Cu–Co mineralizing fluids at Nkana Mine, Central African Copperbelt, Zambia
Ph. Muchez,Dieter Brems,E. Clara,A. De Cleyn,L. Lammens,Adrian J. Boyce,D. de Muynck,D. de Muynck,W. Mukumba,O. Sikazwe +9 more
TL;DR: In this paper, an evolution in the oxygen, carbon and sulphur isotopic composition is presented from the layer parallel and irregular to the massive veins, possibly reflecting an ongoing oxidation of organic matter in a relatively closed system.
Journal ArticleDOI
Secondary K-feldspar at the Precambrian–Paleozoic unconformity, southwestern Ontario
TL;DR: The Precambrian-Paleozoic boundary in the subsurface of southwestern Ontario commonly is characterized by secondary K-feldspar as discussed by the authors, which is a type of granitoid gneisses.
Journal ArticleDOI
Clumped-isotope thermometry of magnesium carbonates in ultramafic rocks
Pablo García del Real,Kate Maher,Tobias Kluge,Tobias Kluge,Dennis K. Bird,Gordon E. Brown,Gordon E. Brown,Cédric M. John +7 more
TL;DR: In this article, an evaluation of the acid fractionation correction for magnesium carbonates using synthetic magnesite and hydromagnesite, along with natural metamorphic magnesium carbonate and low-temperature hydromagnetic precipitated within a mine adit was provided.
Journal ArticleDOI
Dolomite Diagenesis and Porosity Preservation in Lithic Reservoirs: Carmopolis Member, Sergipe-Alagoas Basin, Northeastern Brazil
TL;DR: The Carmopolis Member of the Muribeca Formation (Aptian) was deposited bp fan deltas, alluvial fans, and braid deltars that prograded from low-grade metamorphic terrains into the Sergipe-Alagoas rift basin during the Aptian as mentioned in this paper.
Journal ArticleDOI
Calibration of the oxygen and clumped isotope thermometers for (proto-)dolomite based on synthetic and natural carbonates
Inigo A. Müller,Inigo A. Müller,Juan Diego Rodriguez-Blanco,Juan Diego Rodriguez-Blanco,Julian-Christopher Storck,Gabriela S. Nascimento,Tomaso R. R. Bontognali,Crisogono Vasconcelos,Liane G. Benning,Liane G. Benning,Liane G. Benning,Stefano M. Bernasconi +11 more
TL;DR: In this article, a (proto-)dolomite-specific Δ47-temperature calibration from 25 to 1100°C for an acid reaction temperature of 70 °C and anchored to widely available calcite standards is presented.
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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