Microbial nucleation of calcium carbonate in the Precambrian

Bosak, Tanja; Newman, Dianne K.

doi:10.1130/0091-7613(2003)031<0577:mnocci>2.0.co;2

Cited by 130 publications

(78 citation statements)

References 21 publications

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“…The limestone rhythmites found 1 m below the top of E2 at Backlundtoppen have a microsparry character like those near the base of E3 and their presence implies precipitation of a carbonate phase within the water column or at the sediment surface, probably assisted by the presence of microbes (Bosak and Newman, 2003). The relatively uniform thickness of the carbonate layers ( Fig.…”

Section: Discussionmentioning

confidence: 99%

The Late Cryogenian Warm Interval, NE Svalbard: Chemostratigraphy and genesis

Fairchild

Bonnand²,

Davies

et al. 2016

Precambrian Research

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/pure/about/ebr-terms At the base of E3, interstratification of cap carbonate with ice-rafted and redeposited glacial sediments occurs. Early diagenetic stabilization of carbonate mineralogy from a precursor, possibly ikaite, to calcite or dolomite is inferred. E3 is predominantly dolomitic silt-shale, with sub-millimetre lamination, lacking sand or current-related sedimentary structures. Thin fine laminae are partly pyritized and interpreted as microbial mats. Dolomite content is 25-50%, with δ 13 C values consistently around +4‰, a value attributed to buffering by dissolution of a precursor metastable carbonate phase. Local calcite cement associates with low δ 13 C values. The carbonates form silt-sized, chemically zoned rhombic crystals from an environment with dynamically changing Fe and Mn. Three-dimensional reconstructions of cm-scale disturbance structures indicate that they represent horizontally directed sock-like folds, developed by release of overpressure into thin surficial sediment overlying an early-cemented layer.A shoaling upwards unit near the top of E3 displays calcium sulphate pseudomorphs in dolomite in the north, but storm-dominated limestones in the south, both being overlain by peritidal oolitic dolomites, exposed under the succeeding Wilsonbreen glacial deposits. There is no Trezona δ 13 C anomaly, possibly implying top-truncation of the succession.Regular 0.5 m-scale sedimentary rhythms, reflecting subtle variations in sediment texture or composition occur throughout E3 and are interpreted as allocyclic. They are thought to be mainly primary in origin, locally modified slightly during early diagenetic cementation. Rhythms are proposed to represent ca. 18 kyr precession cycles, implying 6-8 Myr deposition between glaciations.

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Section: Discussionmentioning

confidence: 99%

The Late Cryogenian Warm Interval, NE Svalbard: Chemostratigraphy and genesis

Fairchild

Bonnand²,

Davies

et al. 2016

Precambrian Research

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“…Precipitation of calcium carbonate was shown on extracellular nanoglobules produced by Desulfonatronum lacustre in laboratory experiments [68] and sulfate-reducing bacteria cell surfaces have been shown to promote carbonate precipitation as well. [69]. Therefore, an increase in sulfate-reducing bacteria diversity and/or abundance may increase the microbial mat lithification potential.…”

Section: Changes In Microbial Diversity In Response To Elevated Co 2 mentioning

confidence: 99%

Effects of Elevated Carbon Dioxide and Salinity on the Microbial Diversity in Lithifying Microbial Mats

et al. 2014

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Atmospheric levels of carbon dioxide (CO 2 ) are rising at an accelerated rate resulting in changes in the pH and carbonate chemistry of the world's oceans. However, there is uncertainty regarding the impact these changing environmental conditions have on carbonate-depositing microbial communities. Here, we examine the effects of elevated CO 2 , three times that of current atmospheric levels, on the microbial diversity associated with lithifying microbial mats. Lithifying microbial mats are complex ecosystems that facilitate the trapping and binding of sediments, and/or the precipitation of calcium carbonate into organosedimentary structures known as microbialites. To examine the impact of rising CO 2 and resulting shifts in pH on lithifying microbial mats, we constructed growth chambers that could continually manipulate and monitor the mat environment. The microbial diversity of the various treatments was compared using 16S rRNA gene pyrosequencing. The results indicated that elevated CO 2 levels during the six month exposure did not profoundly alter the microbial diversity, community structure, or carbonate precipitation in the microbial mats; however some key taxa, such as the sulfate-reducing bacteria Deltasulfobacterales, were enriched. These results suggest that some carbonate depositing ecosystems, such as the microbialites, may be more resilient to anthropogenic-induced environmental change than previously thought. OPEN ACCESSMinerals 2014, 4 146

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“…Microbes can change the SI of calcium carbonates, take up and secrete various kinetic inhibitors, or bind calcium and magnesium ions on their negatively charged outer surfaces (Braissant et al 2003;Buczynski and Chafetz 1991;Contos et al 2001;Kawaguchi and Decho 2002;Krumbein 1978;Roberts et al 2004;Schultze-Lam et al 1996;Van Lith et al 2003;Visscher et al 2000;Warthmann et al 2000). In highly supersaturated environments that contain a lot of dissolved inorganic carbon (DIC) such as soda lakes and hot springs, microbial biofilms can leave morphological signatures (Arp et al 1998;Arp et al 1999;Chafetz et al 1991;Folk et al 1985), although the amount of precipitated carbonates is not predicated upon metabolic shifts of SI (Arp et al 2001;Bosak and Newman 2003). Some of these signatures have been confirmed by laboratory experiments (Bosak et al 2004), but how various microbes interact with carbonate minerals in the presence of high DIC deserves more experimental attention.…”

Section: ϫ848mentioning

confidence: 99%

“…Although much higher concentrations of sulfate and lactate (ϳ 20 mM and ϳ 50 mM, respectively) are commonly used to grow sulfate-reducing bacteria, we used these low concentrations in keeping with the low sulfate concentrations inferred for the Precambrian oceans (Anbar and Knoll 2002;Habicht et al 2002) and our previous work that investigated the influence of sulfate reduction on carbonate precipitation in such oceans (Bosak and Newman 2003). Microscopic counts of cells stained by 4Ј,6-Diamidino-2-phenylindole (DAPI) (Sigma-Aldrich) confirmed that biomass doubling could occur even with 1 mM sulfate in the medium.…”

Section: Bacterial Strain Culture Medium and Experimental Conditionsmentioning

confidence: 99%

Microbial Kinetic Controls on Calcite Morphology in Supersaturated Solutions

Bosak¹,

Newman²

2005

Journal of Sedimentary Research

101

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Recognizing microbial imprints in the morphology of calcium carbonate minerals that form in very supersaturated solutions containing a high level of dissolved inorganic carbon (DIC) is challenging. To better define criteria for this purpose, we have analyzed the influence of sulfate-reducing bacterium Desulfovibrio desulfuricans strain G20 on the morphology of calcite in such solutions. G20 does not induce large shifts of pH or alkalinity under these conditions, but its uptake of millimolar sulfate and lactate decreases the number of anhedral crystals and stimulates growth of subhedral spar crystals relative to the abiotic controls. In addition, organic compounds associated with the basal growth medium, purified exopolymeric substances produced by G20 and lypopolysaccharide, stimulate the growth of anhedral crystals and crystals with rounded edges at low supersaturation index (SI) of calcite. The effect of organic compounds is reduced at higher SI, where rhombohedral habits dominate. Our results suggest that the local production and uptake of kinetic inhibitors within microbial biofilms may be an important control on calcite morphology in supersaturated solutions.

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Microbial nucleation of calcium carbonate in the Precambrian

Cited by 130 publications

References 21 publications

The Late Cryogenian Warm Interval, NE Svalbard: Chemostratigraphy and genesis

The Late Cryogenian Warm Interval, NE Svalbard: Chemostratigraphy and genesis

Effects of Elevated Carbon Dioxide and Salinity on the Microbial Diversity in Lithifying Microbial Mats

Microbial Kinetic Controls on Calcite Morphology in Supersaturated Solutions

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