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
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Posted ContentDOI
The Origin of Replacive, Zebra, and Saddle Dolomites in the Gran Sasso Massif, Central Apennines, Italy
Journal ArticleDOI
Paragenesis of an Ediacaran carbonate-platform phosphorite: Constraints from optical petrography and texture-specific clumped isotope paleothermometry
TL;DR: The Salitre Formation of the Ediacaran Period (c. 600-550 Ma) as discussed by the authors contains sedimentary phosphorite deposits, in which the dominant phosphate-bearing phase is cryptocrystalline carbonate-rich fluorapatite (CFA) cement.
Journal ArticleDOI
Hydrothermal Calcite Precipitation in Veins: Inspired by Experiments for Oxygen Isotope Fractionation between CO2 and Calcite from 1 °C to 150 °C
TL;DR: In this article , the oxygen isotope ratio of calcite in isotopic equilibrium with a fluid depends on that of the fluid as well as the formation temperature of hydrothermal deposits.
Journal ArticleDOI
Chemical extraction of iron from carbonate in banded iron formations for isotope analysis
TL;DR: In this paper , the effects of leaching carbonates (e.g. partial and/or total dissolution) on their Fe isotope composition were investigated. But, the results were limited to a siderite standard and three natural samples.
Journal ArticleDOI
Multiphase dolomitization in Devonian Shogram Formation, Chitral, Karakorum ranges, Pakistan: Evidence from outcrop analogue, petrography, and geochemistry
Maryam Saleem,Faisal Rehman,Emad Ullah Khan,Syed Muhammad Waseem Sajjad,Tahir Azeem,Asad Jadoon,Abbas A. Naseem +6 more
TL;DR: In this paper , the first detailed microscopic and geochemical investigations of multiphase dolomitization in Devonian Shogram Formation, North-Western Karakorum constraining nature and origin of dolombizing fluids were performed.
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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