Oxygen isotope fractionation during the dolomitization of calcium carbonate

Matthews, Alan; Katz, Amitai

doi:10.1016/0016-7037(77)90249-6

Cited by 248 publications

(141 citation statements)

References 15 publications

Supporting

Mentioning

129

Contrasting

Unclassified

Order By: Relevance

“…These values fit very well with the theoretical values of the oxy gen isotope enrichment factor (e 18 0) between dolomite and cal cite precipitated at sedimentary temperatures (Northrop and Clayton, 1966;Fritz and Smith, 1970;Matthews and Katz, 1977). The same range is also observed for the A 13 C difference (0 to + 3.5%o) (Table 4) measured between dolomite and calcite and 00 vs PDB dolomite the theoretical e 13 C value between dolomite and calcite of lowtemperature assemblages (Sheppard and Schwarcz, 1970).…”

Section: Dolomitessupporting

confidence: 82%

“…In this sense, calcites and dolomites appear cogenetic; this is also evidenced in the dolomite-calcite assemblages where the measured difference (+ 3.0 to + 4.5%o) between the 5 18 0 val ues of dolomite and calcite corresponds to the experimental value of the oxygen isotope fractionation factor at low temper atures between dolomite and calcite (Fritz and Smith, 1970;Matthews and Katz, 1977).…”

Section: Dolomitesmentioning

confidence: 63%

“…The 5 values of calcites and dolomites will be discussed separately (Fig. 3, Tables 2, 3) owing to the different paths of oxygen and carbon isotope fractionation which occur during crystallization of these minerals (Northrop and Clayton, 1966;Fritz and Smith, 1970;Sheppard and Schwarcz, 1970;Matthews and Katz, 1977).…”

Section: Stable Isotopesmentioning

confidence: 99%

See 2 more Smart Citations

Sedimentary and Diagenetic Evolution of Messinian Evaporites in the Tyrrhenian Sea (ODP Leg 107, Sites 652, 653, and 654): Petrographic, Mineralogical, and Stable Isotope Records

Cartigny¹,

Rouchy²

1990

Proceedings of the Ocean Drilling Program

View full text Add to dashboard Cite

The Messinian evaporitic succession recovered at ODP Sites 652, 653, and 654 in the Tyrrhenian Sea was generated under various environmental conditions which ranged from brackish to hypersaline, as deduced from the sedimentary facies and stable isotope compositions of the carbonate and sulfate deposits. Water in the basins had to be shallow to undergo such rapid and large geochemical variations.The marine influence was omnipresent in the basin at least during the deposition of sulfate evaporites; seawater or marine brines might have been supplied either by direct input into evaporitic lagoons as at Sites 653 and 654, or by sub terraneous infiltration in marginal areas as at Site 652.Episodes of severe dilution by continental waters occurred frequently throughout Messinian times in the more ba sinal areas at Sites 653 and 654, while a fresh water body was standing permanently at Site 652.The high heat flow present at Site 652 was responsible for a major late authigenesis of iron-rich dolomites, which was initiated during the subsidence of the basin and ended before Pliocene.

show abstract

Section: Dolomitessupporting

confidence: 82%

Section: Dolomitesmentioning

confidence: 63%

See 1 more Smart Citation

Sedimentary and Diagenetic Evolution of Messinian Evaporites in the Tyrrhenian Sea (ODP Leg 107, Sites 652, 653, and 654): Petrographic, Mineralogical, and Stable Isotope Records

Cartigny¹,

Rouchy²

1990

Proceedings of the Ocean Drilling Program

View full text Add to dashboard Cite

show abstract

“…DeGiovani et al (1974) postulate that light-carbon dolomite may form in organic-poor sediment by direct oxidation of organic matter to CO 2 whereas heavycarbon dolomites may precipitate in sediments with abundant organic matter where methane has been generated by CO 2 reduction. Although there is not a direct correlation for individual samples, total organic carbon in heavy-carbon dolomites and associated sediments at Sites 467 and 468 is high, in the range 0.6% to et al, 1969]; curve b extrapolated dolomite-water [Matthews and Katz, 1977]; curve c protodolomite-water [Fritz and Smith, 1970], using constant dolomite-calcite fractionation of +3.1‰ given in Friedman and O'Neil [1977]; and curve d, extrapolated dolomite-water [Northrup and Clayton, 1966]. All expressions use 1.0412 for the fractionation factor for CO 2 -H 2 O at 25 °C [Friedman and O'Neil, 1977].…”

Section: Carbon Isotopes-an Index Of Organic Matter Decaymentioning

confidence: 97%

Isotopic Survey of Diagenetic Carbonates, Deep Sea Drilling Project Leg 63

Kenneth¹,

John²

1981

Initial Reports of the Deep Sea Drilling Project

View full text Add to dashboard Cite

Authigenic carbonates, principally calcium-rich dolomites, with extremely variable isotopic compositions were recovered in organic-rich marine sediments during Leg 63 drilling off southern California and Baja California. These carbonates occur as thin layers in fine-grained, diatomaceous sediments and siliceous rocks, mostly deposited during the Neogene. A combination of textural, geochemical, and isotopic evidence indicates these dolomites formed as cements and precipitates in shallow subsurface zones of high alkalinity spawned by abundant CO 2 and methane production during progressive microbial decay of organic matter. Depths and approximate temperatures of formation estimated from oxygen isotopes are 87 to 658 meters and 10°C to 50°C, respectively. Within any sedimentary section, dolomites may form simultaneously at several depths or at different times within the same interval. Highly variable carbon isotopes (-30 to + 16‰) reflect the isotopic reservoir in which the carbonates formed. Oxidation of organic matter through microbial reduction of sulfate at shallow depths favors light-carbon carbonates such as those at Sites 468 and 471; heavy-carbon carbonates at Site 467 most likely formed below this zone where HC 12 O 3~ is preferentially removed by reduction of CO 2 to methane during methanogenesis. An important controlling factor is the sedimentation rate, which dictates both the preservation of organic matter on the sea floor and depth distribution of subsurface zones of organic-matter decay.

show abstract

“…Such estimates for Δδ 18 Odolo-cal at 25°C, based on experiments and theoretical calculations, include 4 to 7‰ (Northrop and Clayton, 1966;O'Neil et al, 1969;Matthews and Katz, 1977;Clayton et al, 1989), 2.6 to 4‰ (Fritz and Smith, 1970;Vahrenkamp and Swart, 1994;Schmidt et al, 2005;Vasconcelos et al, 2005;Chacko and Deines, 2008), 3‰ (Land, 1980). Although such values can be translated to 0.05-0.14‰ increase in δ 18 O per 1%Mg increase, the magnitude of that increase for dolomite is poorly constrained for different temperature condition.…”

mentioning

confidence: 99%

Oxygen and Carbon Isotopic Composition of Carbonate Rocks of the Permian Qixia Formation, Sichuan Basin: Thermal Effects of Emeishan Basalt

Huang

Zhong

et al. 2016

Earth sci. res. j.

View full text Add to dashboard Cite

The late Permian thermal events related to Emeishan Basalt has made a great impact on the underlying carbonate rock properties in the western margin of the Yangtze Platform. In this paper, we investigate the carbon and oxygen isotopic composition of the Qixia Formation carbonates from two sections: the Qiaoting Section in the northeastern part of the Sichuan Basin and the Changjianggou Section at the northwestern edge of the Basin. The data reveal that: (i) Samples from Qiaoting section show a relatively narrow range of δ Los eventos térmicos del Pérmico tardío relacionados con el Basalto Emeishan han tenido un gran impacto en las propiedades de las rocas de carbonato subyacentes en el margen occidental de la plataforma Yangtze. En este artículo se investiga la composición isotópica de carbonatos de la formación Qixia en dos secciones: la sección de Qiaoting en la parte nororiental de la cuenca Sichuan y la sección Changjianggou, en el noroccidente de la cuenca. La información evidencia que, (i) las muestras de la sección Qiaoting tienen un espectro más angosto que va de δ 13 C a δ 18 O, con variación de 2.7 ‰ a 5,2 ‰, con un promedio de 4.2 ‰, y -3.8 ‰ a -7.8 ‰, con una media de -5.4 ‰, respectivamente. En contraste, las muestras de la sección Changjianggou tienen una variación de mayor magnitud en δ 13 C a δ 18 O que va desde -1 ‰ hasta 3.8 ‰, con un promedio de 1.5 ‰, y de -2.1 a -9.2 ‰, con una media de -6.0 ‰, respectivamente; (ii) los registros de δ 13 C y δ 18O en carbonatos son similares a los de agua marina del pérmico medio, mientras que los carbonatos de la sección Changjianggou se ven empobrecidos en 13C y 18O comparados al agua marina de esta edad; con base en la petrografía combinada y la evidencia del flujo paleotérmico, la baja composición isotópica de oxígeno y carbón de los carbonatos en la sección de Changjianggou se interpretó como resultado de los efectos térmicos del Basalto Emeishan debido a la proximidad con el centro de erupción. La alta temperatura redujo los valores de δ 18 O de los carbonatos y llevó a la maduración temprana de la materia orgánica, lo que produjo dióxido de carbono enriquecido en 13 C durante la formación de los carbonatos. ABSTRACT RESUMEN

show abstract

Oxygen isotope fractionation during the dolomitization of calcium carbonate

Cited by 248 publications

References 15 publications

Sedimentary and Diagenetic Evolution of Messinian Evaporites in the Tyrrhenian Sea (ODP Leg 107, Sites 652, 653, and 654): Petrographic, Mineralogical, and Stable Isotope Records

Sedimentary and Diagenetic Evolution of Messinian Evaporites in the Tyrrhenian Sea (ODP Leg 107, Sites 652, 653, and 654): Petrographic, Mineralogical, and Stable Isotope Records

Isotopic Survey of Diagenetic Carbonates, Deep Sea Drilling Project Leg 63

Oxygen and Carbon Isotopic Composition of Carbonate Rocks of the Permian Qixia Formation, Sichuan Basin: Thermal Effects of Emeishan Basalt

Contact Info

Product

Resources

About