Diagenesis of carbonate associated sulfate

Fichtner, Vanessa; Strauß, Harald; Immenhauser, Adrian; Buhl, Dieter; Neuser, Rolf D.; Niedermayr, Andrea

doi:10.1016/j.chemgeo.2017.05.008

Cited by 49 publications

(34 citation statements)

References 72 publications

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“…E and black bars in Fig. D), consistent with incorporation of sulphate with anomalously‐low δ 34 S into CAS during dolomitization (Marenco et al., ; Present et al., ; Fichtner et al., ).…”

Section: Discussionsupporting

confidence: 72%

“…Fine‐grained slope or basinal limestones therefore may be poor archives of ancient seawater sulphate. Peritidal fine‐grained limestones, on the other hand, may incorporate isotopically‐light sulphate that is the product of re‐oxidized sulphide and pyrite during early meteoric or dolomitizing diagenesis (Marenco et al., ; Present et al., ; Fichtner et al., ). Meteoric replacement of biogenic aragonite leaches sulphate without fractionating its isotopes if the meteoric fluids are sulphate‐poor (Gill et al., ), but organic‐rich, fine‐grained carbonate sediments are pyrite‐rich (Ku et al., ; Crémière et al., ), providing a source of isotopically‐light sulphur that would be mobile during early diagenesis.…”

Section: Discussionmentioning

confidence: 99%

“…Studies of CAS in bulk carbonate material have concluded that early diagenetic processes such as neomorphism, dolomitization and authigenic cementation may incorporate sulphate from diagenetically‐modified or non‐seawater fluids (Goldberg et al., ; Riccardi et al., ; Gill et al., ; Loyd et al., 2012a; Rennie & Turchyn, ; Baldermann et al., ; Present et al., ; Feng et al., ; Fichtner et al., ). Screening for the effect of such processes typically entails textural, trace metal, and carbon and oxygen isotope analyses associated with meteoric or burial diagenesis that may not correlate with sulphur isotope alteration (Goldberg et al., ; Gill et al., 2011a, 2011b; Yan et al., ; Fichtner et al., ). Because the early diagenetic history of a carbonate rock typically varies with its depositional setting, a thorough accounting of early diagenetic effects on CAS δ 34 S requires detailed sedimentological context.…”

Section: Introductionmentioning

confidence: 99%

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Diagenetic controls on the isotopic composition of carbonate‐associated sulphate in the Permian Capitan Reef Complex, West Texas

et al. 2019

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Late Palaeozoic-age strata from the Capitan Reef in west Texas show faciesdependent heterogeneity in the sulphur isotopic composition of carbonateassociated sulphate, which is trace sulphate incorporated into carbonate minerals that is often used to reconstruct the sulphur isotopic composition of ancient seawater. However, diagenetic pore fluid processes may influence the sulphur isotopic composition of carbonate-associated sulphate. These processes variously modify the sulphur isotopic composition of incorporated sulphate from syndepositional seawater in shelf crest, outer shelf, shelf margin and slope depositional settings. This study used a new multicollector inductively-coupled plasma mass spectrometry technique to determine the sulphur isotopic composition of samples of individual depositional and diagenetic textures. Carbonate rocks representing peritidal facies in the Yates and Tansill formations preserve the sulphur isotopic composition of Guadalupian seawater sulphate despite alteration of the carbon and oxygen isotopic compositions by meteoric and dolomitizing diagenetic processes. However, sulphur isotopic data indicate that limestones deposited in reef and slope facies in the Capitan and Bell Canyon formations largely incorporate sulphate from anoxic marinephreatic pore fluids isotopically modified from seawater by microbial sulphate reduction, despite generally preserving the carbon and oxygen isotopic compositions of Permian seawater. Some early and all late meteoric calcite cements have carbonate-associated sulphate with a sulphur isotopic composition distinct from that of Permian seawater. Detailed petrographic and sedimentary context for carbonate-associated sulphate analyses will allow for improved reconstructions of ancient seawater composition and diagenetic conditions in ancient carbonate platforms. The results of this study indicate that carbonate rocks that diagenetically stabilize in high-energy environments without pore fluid sulphate gradients can provide a robust archive of ancient seawater's sulphur isotopic composition.

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Section: Discussionsupporting

confidence: 72%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Diagenetic controls on the isotopic composition of carbonate‐associated sulphate in the Permian Capitan Reef Complex, West Texas

et al. 2019

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“…Sulfate (SO4 2-) substitutes for carbonate (CO3 2-) in all calcium carbonate minerals, in the order of affinity aragonite < calcite < vaterite (Balan et al, 2014;Arroyo-de Dompablo et al, 2015). The concentration of this carbonate-associated sulfate (CAS) varies between tens parts-permillion (ppm) and a few percent, depending, in addition to mineralogy, on the dissolved SO4 2to CO3 2activity ratio (aSO4 2-/aCO3 2-), the precipitation rate, and diagenetic processes (Busenberg and Plummer, 1985;Gellatly and Lyons, 2005;Gill et al, 2008;Fichtner et al, 2017). Concentrations of CAS as high as 24,000 and 47,000 ppm occur in natural and synthetic calcite, respectively (Busenberg and Plummer, 1985;Staudt and Schoonen, 1995), whereas natural and synthetic aragonite hosts up to 8,200 and 4,500 ppm, respectively (Busenberg and Plummer, 1985, this study).…”

Section: Introductionmentioning

confidence: 99%

Sulfur isotope fractionation between aqueous and carbonate-associated sulfate in abiotic calcite and aragonite

Barkan

Paris

Webb

et al. 2020

Geochimica et Cosmochimica Acta

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…Furthermore, sedimentological evidence of anoxia, including the deposition and preservation of black organic‐rich mudrock has not been observed in these outcrops (Katz et al ., ; Buoniconti, ; Katz, ). Since recent studies have shown that the δ 34 S CAS values of both recent (Gill et al ., ) and Triassic carbonates (Fichtner et al ., ) are maintained during diagenesis, other controls on variability in the δ 34 S CAS values, such as freshwater runoff and contributions of sulphate from terrestrial evaporites, are considered as possible mechanisms driving the variability in δ 34 S CAS values observed in the Madison Limestone outcrops presented in this study.…”

Section: Discussionmentioning

confidence: 97%

Multi‐proxy constraints on the significance of covariant δ¹³C values in carbonate and organic carbon during the early Mississippian

et al. 2018

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This study investigates the covariation between carbonate and organic δ13C values in a proximal to distal transect of four outcrops in the Madison Limestone in the Western United States Rockies, combined with δ34S values of carbonate associated sulphate, the concentration of acid‐insoluble material and measurements of total organic carbon. These new geochemical datasets not only allow for an evaluation of carbon isotope covariance during one of the largest perturbations to the global carbon cycle over the past 550 Myr, but also constrain the cause of the excursion in carbonate δ13C values. The results support the hypothesis that a period of anoxia did not play a role in generating the positive carbonate δ13C values, but rather favour interpretations by previous workers that the proliferation of land plants destabilized the Carboniferous carbon cycle, setting the stage for a significant change in the carbonate δ13C values of contemporaneous marine carbonates. These results also demonstrate that one of the largest perturbations to the global carbon cycle did not produce synchronous variations in carbonate and organic δ13C values, emphasizing the importance of local depositional controls on carbon isotope covariance in the geological record in both modern and ancient environments.

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Diagenesis of carbonate associated sulfate

Cited by 49 publications

References 72 publications

Diagenetic controls on the isotopic composition of carbonate‐associated sulphate in the Permian Capitan Reef Complex, West Texas

Diagenetic controls on the isotopic composition of carbonate‐associated sulphate in the Permian Capitan Reef Complex, West Texas

Sulfur isotope fractionation between aqueous and carbonate-associated sulfate in abiotic calcite and aragonite

Multi‐proxy constraints on the significance of covariant δ¹³C values in carbonate and organic carbon during the early Mississippian

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Diagenesis of carbonate associated sulfate

Cited by 49 publications

References 72 publications

Diagenetic controls on the isotopic composition of carbonate‐associated sulphate in the Permian Capitan Reef Complex, West Texas

Diagenetic controls on the isotopic composition of carbonate‐associated sulphate in the Permian Capitan Reef Complex, West Texas

Sulfur isotope fractionation between aqueous and carbonate-associated sulfate in abiotic calcite and aragonite

Multi‐proxy constraints on the significance of covariant δ13C values in carbonate and organic carbon during the early Mississippian

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Multi‐proxy constraints on the significance of covariant δ¹³C values in carbonate and organic carbon during the early Mississippian