Mineral authigenesis within chemosynthetic microbial mats: Coated grain formation and phosphogenesis at a Cretaceous hydrocarbon seep, New Zealand

Zwicker, Jennifer; Smrzka, Daniel; Steindl, Florian Roman; Böttcher, Michael E.; Libowitzky, Eugen; Kiel, Steffen; Peckmann, Jörn

doi:10.1002/dep2.123

Cited by 12 publications

(13 citation statements)

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“…Siahi et al 2017;Flannery et al 2019) and most extensively studied particles of the geological record, providing a modern analogue that will prove useful in explaining fossil ooids with features compatible with an origin associated with benthic microbial communities (e.g. Kalkowsky 1908;Krumbein 1983;Neuweiler 1993;Li et al 2017;Antoshkina et al 2020;Zwicker et al 2020).…”

Section: Concluding Remarks and Implicationsmentioning

confidence: 99%

“…Consequently, this study will also aim to interpret the biotic and environmental factors that may control ooid development within microbial mats, providing a useful modern analogue for explaining the origin of fossil ooids, especially of those whose origin is suspected to be related with benthic microbial communities (e.g. Kalkowsky 1908;Krumbein 1983;Neuweiler 1993;Li et al 2017;Antoshkina et al 2020;Zwicker et al 2020).…”

Section: Introductionmentioning

confidence: 99%

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Ooids forming in situ within microbial mats (Kiritimati atoll, central Pacific)

Suárez-González

Reitner

2021

PalZ

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Ooids (subspherical particles with a laminated cortex growing around a nucleus) are ubiquitous in the geological record since the Archean and have been widely studied for more than two centuries. However, various questions about them remain open, particularly about the role of microbial communities and organic matter in their formation and development. Although ooids typically occur rolling around in agitated waters, here, we describe for the first time aragonite ooids forming statically within microbial mats from hypersaline ponds of Kiritimati (Kiribati, central Pacific). Subspherical particles had been previously observed in these mats and classified as spherulites, but these particles grow around autochthonous micritic nuclei, and many of them have laminated cortices, with alternating radial fibrous laminae and micritic laminae. Thus, they are compatible with the definition of the term ‘ooid’ and are in fact very similar to many modern and fossil examples. Kiritimati ooids are more abundant and developed in some ponds and in some particular layers of the microbial mats, which leads to the discussion and interpretation of their formation processes as product of mat evolution, through a combination of organic and environmental factors. Radial fibrous laminae are formed during periods of increased supersaturation, either by metabolic or environmental processes. Micritic laminae are formed in closer association with the mat exopolymer (EPS) matrix, probably during periods of lower supersaturation and/or stronger EPS degradation. Therefore, this study represents a step forward in the understanding of ooid development as influenced by microbial communities, providing a useful analogue for explaining similar fossil ooids.

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Section: Concluding Remarks and Implicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ooids forming in situ within microbial mats (Kiritimati atoll, central Pacific)

Suárez-González

Reitner

2021

PalZ

View full text Add to dashboard Cite

show abstract

“…Siahi et al, 2017; Flannery et al, 2019) and most extensively studied particles of the geological record, providing a modern analogue that will proof useful in explaining fossil ooids with features compatible with an origin associated with benthic microbial communities (e.g. Kalkowsky, 1908; Krumbein, 1983; Neuweiler, 1993; Li et al, 2017; Antoshkina et al, 2020; Zwicker et al, 2020).…”

Section: Concluding Remarks and Implicationsmentioning

confidence: 99%

“…Consequently, this study will also aim to interpret the biotic and environmental factors that may control ooid development within microbial mats, providing a useful modern analogue for explaining the origin of fossil ooids, especially of those whose origin is suspected to be related with benthic microbial communities (e.g. Kalkowsky, 1908; Krumbein, 1983; Neuweiler, 1993; Li et al, 2017; Antoshkina et al, 2020; Zwicker et al, 2020)…”

Section: Introductionmentioning

confidence: 99%

Ooids formingin situwithin microbial mats (Kiritimati atoll, central Pacific)

Suárez-González

Reitner

2021

Preprint

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Ooids (subspherical particles with a laminated cortex growing around a nucleus) are ubiquitous in the geological record since the Archean and have been widely studied for more than two centuries. However, various questions about them remain open, particularly about the role of microbial communities and organic matter in their formation and development. Although ooids typically occur rolling around in agitated waters, here we describe for the first time aragonite ooids forming statically within microbial mats from hypersaline ponds of Kiritimati (Kiribati, central Pacific). Subspherical particles had been previously observed in these mats and classified as spherulites, but they grow around autochthonous micritic nuclei, and many of them have laminated cortices, with alternating radial fibrous laminae and micritic laminae. Thus, they are compatible with the definition of ooid and are in fact identical to many modern and fossil examples. Kiritimati ooids are more abundant and developed in some ponds and in some particular layers of the microbial mats, which has led to the discussion and interpretation of their formation processes as product of mat evolution, through a combination of organic and environmental factors. Radial fibrous laminae are formed during periods of increased supersaturation, either by metabolic or environmental processes. Micritic laminae are formed in closer association with the mat exopolymer (EPS) matrix, probably during periods of lower supersaturation and/or stronger EPS degradation. Therefore, this study represents a step forward in the understanding of ooid development as influenced by microbial communities, providing a useful analogue for explaining similar fossil ooids.

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“…Burnett, 1977;Compton & Bergh, 2016) and can be observed in hydrocarbon seep environments (e.g. Liu et al, 2018;Zwicker et al, 2020). Provided that both the formation temperature and the temperature dependent oxygen isotopic fractionation between the parental fluid and structurally bound carbonate are known, δ 18 O values of the fluid from which a biogenic or abiotic carbonated apatite precipitated can be derived (e.g.…”

Section: Origin Of Samplesmentioning

confidence: 99%

Clumped isotope thermometry techniques and their application to fossil teeth and pedogenic carbonates

Löffler¹

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This Ph.D. thesis demonstrates i) the highly precise performance of refined and new analytical setups for clumped isotope analysis (Δ47 and Δ48) and ii) the applicability of clumped isotope analyses to biogenic and abiogenic carbonated apatite (Δ47) and abiogenic carbonates (Δ47 and Δ48) for research related to paleothermophysiology and paleoclimatology, whereas the overall analytical precision has been increased. A comprehensive Δ47 dataset with 122 replicate analyses is provided from which the temperature dependence of Δ47 for (bio)apatite (Δ47-1/T2) is calculated between 1 °C and 80 °C. The temperature dependence of oxygen isotope equilibrium fractionation between carbonated synthetic apatite and water (1,000ln(αCHAP-H2O)) is experimentally determined. When applied to tooth enameloid from a modern Greenland shark (Somniosus microcephalus), a Late Miocene megatooth shark (Carcharodon megalodon), and an Upper Cretaceous Tyrannosaurus rex, reconstructed Δ47-based temperatures and δ18OH2O are in line with previously published data. An analytical setup for highly precise clumped isotope analysis is described that allows for the simultaneous measurement of ∆47 and ∆48 in CO2 with external reproducibilities close to the respective shot-noise limits. The analyte gases originate from pure carbonates that were digested in hypersaturated orthophosphoric acid and purified using a fully automated device. Δ47 data sets with 117 replicate analyses in total on 22 pedogenic carbonate nodules from two Spanish Middle Miocene sections reveal the continental Southern European thermal structure during the end of the Middle Miocene Climatic Optimum (MCO) and the complete Middle Miocene Climatic Transition (MMCT; from 15.33 to 12.98 Ma).

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Mineral authigenesis within chemosynthetic microbial mats: Coated grain formation and phosphogenesis at a Cretaceous hydrocarbon seep, New Zealand

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 12 publications

References 131 publications

Ooids forming in situ within microbial mats (Kiritimati atoll, central Pacific)

Ooids forming in situ within microbial mats (Kiritimati atoll, central Pacific)

Ooids formingin situwithin microbial mats (Kiritimati atoll, central Pacific)

Clumped isotope thermometry techniques and their application to fossil teeth and pedogenic carbonates

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