New data on the composition of stable isotopes in glendonites of the White Sea and their genesis

Geptner, A. R.; Ветошкина, О. С.; Petrova, V. V.

doi:10.1134/s0024490214060042

Cited by 14 publications

(10 citation statements)

References 11 publications

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“…The stable isotopic compositions of bulk glendonites and individual carbonate generations differ significantly. δ 13 C values of bulk glendonite samples range from −52.4 ‰ to +0.6 ‰ PDB, while δ 18 O values range from −16.6 ‰ to +4.8 ‰ PDB (Derkachev et al, 2007;Geptner et al, 1994Geptner et al, , 2014Qu et al, 2017;Willscroft et al, 2017;Vickers et al, 2018;Morales et al, 2017;Teichert and Luppold, 2013, among others). δ 13 C values of ikaite-derived calcite range from −27.7 ‰ to −14.3 ‰ PDB, while δ 18 O values range from −5.1 ‰ to +1.3 ‰ PDB (Frank et al, 2008).…”

Section: Isotopic Composition Of Ikaite and Glendonitementioning

confidence: 99%

“…Modern ikaite occurs in a wide range of cold-water environments. Ikaite microcrystals have been recorded in sea ice and cold caves, ikaite tufa has been reported from shallow marine and lacustrine settings, and macrocrystals and their aggregates have been described from hypersaline springs and lacustrine and marine sediments, ranging from littoral environments to abyssal depths (up to ∼ 6950 m) (Pauly, 1963;Stein and Smith, 1986;Ito, 1996;Dieckmann et al, 2008;Last and Last, 2012;Geptner et al, 2014;Fink et al, 2014;Oehlerich et al, 2015). Occurrences of ikaite pseudomorphs (glendonites) in the geological record are characterized by a slightly less diverse range of paleoenvironments.…”

Section: Introductionmentioning

confidence: 99%

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Database of global glendonite and ikaite records throughout the Phanerozoic

Rogov

Ershova

Vereshchagin

et al. 2021

Earth Syst. Sci. Data

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Abstract. This database of Phanerozoic occurrences and isotopic characteristics of metastable cold-water calcium carbonate hexahydrate (ikaite; CaCO3⚫6H2O) and their associated carbonate pseudomorphs (glendonites) has been compiled from academic publications, explanatory notes, and reports. Our database including more than 700 occurrences reveals that glendonites characterize cold-water environments, although their distribution is highly irregular in space and time. A significant body of evidence suggests that glendonite occurrences are restricted mainly to cold-water settings; however they do not occur during every glaciation or cooling event of the Phanerozoic. While Quaternary glendonites and ikaites have been described from all major ocean basins, older occurrences have a patchy distribution, which may suggest poor preservation potential of both carbonate concretions and older sediments. The data file described in this paper is available on Zenodo at https://doi.org/10.5281/zenodo.4386335 (Rogov et al., 2020).

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Section: Isotopic Composition Of Ikaite and Glendonitementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Database of global glendonite and ikaite records throughout the Phanerozoic

Rogov

Ershova

Vereshchagin

et al. 2021

Earth Syst. Sci. Data

View full text Add to dashboard Cite

show abstract

“…The stable isotopic compositions of bulk glendonites and individual carbonate generations differ significantly. δ 13 С values of bulk glendonite samples range from −52.4 to +0.6 ‰PDB, while δ 18 O values range from −16.6 to +4.8 ‰PDB (Derkachev et al, 2007;Geptner et al, 1994Geptner et al, , 2014Qu et al, 2017;Willscroft, 2013;Vickers et al, 2018;Morales et al, 2017;Teichert, Luppold, 2013, among others 4 General information about ikaite and glendonite composition…”

Section: Petrography and Cathodoluminescencementioning

confidence: 99%

“…reported from shallow marine and lacustrine settings, and macrocrystals and their aggregates have been described from hypersaline springs, lacustrine and marine sediments, ranging from littoral environments to abyssal depths (up to ~4,700 m) (Pauly, 1963;Stein, Smith, 1985;Ito, 1996;Dieckmann et al, 2008;Last, 2012;Geptner et al, 2014;Oehlerich et al, 2015).…”

mentioning

confidence: 99%

Database of global glendonite and ikaite records throughout the Phanerozoic

Rogov¹,

Ershova²,

Vereshchagin³

et al. 2020

Preprint

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Abstract. This database of Phanerozoic occurrences and isotopic characteristics of metastable cold-water calcium carbonate hexahydrate (ikaite; CaCO3·6H2O) and their associated carbonate pseudomorphs (glendonites) has been compiled from academic publications and open-access reports. Our database including 690 occurrences reveals that glendonites characterize cold-water environments, although their distribution is highly irregular in space and time. A significant body of evidence suggests that glendonite occurrences are restricted mainly to cold-water settings, however they do not occur during every glaciation or cooling event of the Phanerozoic. While Quaternary glendonites and ikaites have been described from all major ocean basins, older occurrences have a patchy distribution, which may suggest poor preservation potential of both carbonate concretions and older sediments. The data file described in this paper is available on Zenodo at https://doi.org/10.5281/zenodo.3991964 (Rogov et al., 2020).

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“…Glendonites are predominantly composed of calcite (Kaplan, 1979; Carr et al., 2006; Frank et al., 2008) and, to a lesser extent, dolomite (James et al., 2005; Mikhailova et al., 2019), quartz (Wang et al., 2016) and gypsum (Mikhailova et al., 2019). They are occasionally found within nodules composed of micritic limestone (Muramiya et al., 2018) or cemented sandstone (Geptner et al., 2014).…”

Section: Introductionmentioning

confidence: 99%

Marine diagenesis of ikaite: Implications from the isotopic and geochemical composition of glendonites and host concretions (Palaeogene–Neogene sediments, Sakhalin Island)

et al. 2021

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Glendonites represent pseudomorphs after calcium carbonate hexahydrate (ikaite) and can be used as indicators of past cold climates, because ikaite only naturally occurs in cold environments (<7°C) in the modern. The results of a multi-proxy study of 11 glendonite and host concretion samples from Palaeogene (Gennoishi Formation) and Neogene (Bora and Vengeri formations) sediments from Sakhalin Island, Russian Far East are reported here. Petrographic, cathodoluminescence, powder X-ray diffraction and scanning electron microscope analyses reveal that glendonites are composed of several successive mineralogical phases: low-magnesium ikaite-derived calcite, highmagnesium acicular cement (calcite and dolomite) and blocky calcite or authigenic quartz filling the remaining pore space. Host concretions comprise sandy limestones cemented by high-magnesium calcite. The d 13 C and d 18 O values for host concretions and enclosed glendonites are very similar, with d 13 C ranging from -20.3 to +1.9& Vienna Pee-Dee Belemnite and d 18 O ranging from -3.4 to +3.4& Vienna Pee-Dee Belemnite. Such isotopic values suggest that seawater was the main source of oxygen, while dissolved inorganic carbon and decaying organic matter were the main carbon sources for ikaite growth, concretion and glendonite cementation. The 87 Sr/ 86 Sr values within the glendonites and host concretions are significantly lower compared with coeval Palaeogene-Neogene marine carbonates, suggesting an influence of continental runoff on their isotopic composition. Post Archean Australian Shale normalized rare earth element patterns display negative Ce anomalies and positive Eu anomalies, with a depletion in light rare earth elements or bulge in middle rare earth elements. Such spectra of rare earth elements indicate that ikaite growth and replacement occurred very close to the aerobic-anaerobic boundary, with pore waters derived from trapped seawater and/or ikaite dehydration. Since Mg/Ca ratios and alkalinity increase 2227

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New data on the composition of stable isotopes in glendonites of the White Sea and their genesis

Cited by 14 publications

References 11 publications

Database of global glendonite and ikaite records throughout the Phanerozoic

Database of global glendonite and ikaite records throughout the Phanerozoic

Database of global glendonite and ikaite records throughout the Phanerozoic

Marine diagenesis of ikaite: Implications from the isotopic and geochemical composition of glendonites and host concretions (Palaeogene–Neogene sediments, Sakhalin Island)

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