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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Natural sealed fractures in mudrocks: A case study tied to burial history from the Barnett Shale, Fort Worth Basin, Texas, USA
TL;DR: In this paper, the authors examined sealed fractures from core and outcrop samples of the Barnett Shale of the Fort Worth Basin and aimed to characterize the phases occurring in the fractures from samples having experienced different burial histories.
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Hydrothermal rare earth elements mineralization in the Barra do Itapirapuã carbonatite, southern Brazil: behaviour of selected trace elements and stable isotopes (C, O)
TL;DR: The Barra do Itapirapua carbonatite is located in southern Brazil and belongs to the Cretaceous Ponta Grossa alkaline-carbonatitic province related to the opening of the South Atlantic as discussed by the authors.
Journal ArticleDOI
Mineralogical and isotopic record of biotic and abiotic diagenesis of the Callovian-Oxfordian clayey formation of Bure (France)
Catherine Lerouge,Sylvain Grangeon,Eric C. Gaucher,Christophe Tournassat,Pierre Agrinier,Catherine Guerrot,David Widory,Christine Flehoc,Guillaume Wille,Claire Ramboz,Agnès Vinsot,Stéphane Buschaert +11 more
TL;DR: In the Callovian-oxfordian (COx) clayy unit of the Paris Basin at depths between 400 and 500 m depth, the authors in this article combined new mineralogical and isotopic data to describe the sedimentary history of the COx unit.
Journal ArticleDOI
Dolomitization of the Latemar platform: Fluid flow and dolomite evolution
TL;DR: In this paper, the authors explored the link between fractures and dikes in the Anisian-Ladinian Latemar platform and concluded that dikes and their damage zones formed the pathways for the dolomitizing fluids and functioned as boundaries for dolomerite bodies.
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Variable methane fluxes in shallow marine systems over geologic time
TL;DR: Authigenic carbonates are found in nodules, thin (∼1-cm) layers, and carbonate cemented pavements as discussed by the authors, and the oxygen isotopic composition of the pore fluids supports a meteoric origin of low salinity fluids.
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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