Sedimentology, chemostratigraphy, and stromatolites of lower Paleoproterozoic carbonates, Turee Creek Group, Western Australia

Rowan C. Martindale, Justin V. Strauss, Erik A. Sperling, Jena E. Johnson, Martin Van Kranendonk, David Flannery, Katherine French, Kevin Lepot, Rajat Mazumder, Melissa S. Rice, Daniel P. Schrag, Roger Summons, Malcolm Walter, John Abelson, Andrew H. Knoll

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The ca. 2.45-2.22. Ga Turee Creek Group, Western Australia, contains carbonate-rich horizons that postdate earliest Proterozoic iron formations, bracket both Paleoproterozoic glaciogenic beds and the onset of the Great Oxidation Event (GOE), and predate ca. 2.2-2.05. Ga Lomagundi-Jatuli C-isotopic excursion(s). As such, Turee Creek carbonate strata provide an opportunity to characterize early Paleoproterozoic carbonate sedimentation and carbon cycle dynamics in the context of significant global change. Here, we report on the stratigraphy, sedimentology, petrology, carbon isotope chemostratigraphy, and stromatolite development for carbonate-rich successions within the pre-glacial part of the Kungarra Formation and the postglacial Kazput Formation.Kungarra carbonate units largely occur as laterally discontinuous beds within a thick, predominantly siliciclastic shelf deposit. While this succession contains thin microbialite horizons, most carbonates consist of patchy calcite overgrowths within a siliciclastic matrix. C-isotopic values show marked variation along a single horizon and even within hand samples, reflecting spatially and temporally variable mixing between dissolved inorganic carbon in seawater and isotopically light inorganic carbon generated via syn- and post-depositional remineralization of organic matter.In contrast, the Kazput carbonates consist of subtidal stromatolites, grainstones, and micrites deposited on a mixed carbonate-siliciclastic shelf. These carbonates exhibit moderate δ13C values of -2‰ to +1.5‰ and likely preserve a C-isotopic signature of seawater. Kazput carbonates, thus, provide some of the best available evidence that an interval of unexceptional C-isotopic values separates the Lomagundi-Jatuli C-isotopic excursion(s) from the initiation of the GOE as inferred from multiple sulfur isotopes (loss of mass independent fractionation). The Kazput Formation also contains unusual, m-scale stromatolitic buildups, which are composed of sub-mm laminae and discontinuous, convex upward lenticular precipitates up to a few mm in maximum thickness. Laminae, interpreted as microbial mat layers, contain quartz and clay minerals as well as calcite, whereas precipitate lenses consist of interlocking calcite anhedra, sometimes showing faint mm-scale banding. These cements formed either as infillings of primary voids formed by gas emission within penecontemporaneously lithified mats, or as local seafloor precipitates that formed on, or within, surface mats. It is possible that both mechanisms interacted to form the unique Kazput stromatolites. These microbialites speak to a distinctive interaction between life and environment early in the Paleoproterozoic Era.

Original languageEnglish
Pages (from-to)194-211
Number of pages18
JournalPrecambrian Research
Volume266
DOIs
Publication statusPublished - Sep 1 2015
Externally publishedYes

Fingerprint

Sedimentology
chemostratigraphy
Carbonates
sedimentology
carbonate
Calcium Carbonate
Precipitates
Carbon
calcite
Seawater
Sulfur Isotopes
creek
microbialite
Carbon Isotopes
Petrology
seawater
oxidation
stromatolite
Oxidation
Stratigraphy

Keywords

  • Great Oxidation Event
  • Kazput Formation
  • Kungarra Formation
  • Lomagundi-Jatuli event
  • Stromatolite
  • Turee Creek Group

ASJC Scopus subject areas

  • Geology
  • Geochemistry and Petrology

Cite this

Sedimentology, chemostratigraphy, and stromatolites of lower Paleoproterozoic carbonates, Turee Creek Group, Western Australia. / Martindale, Rowan C.; Strauss, Justin V.; Sperling, Erik A.; Johnson, Jena E.; Van Kranendonk, Martin; Flannery, David; French, Katherine; Lepot, Kevin; Mazumder, Rajat; Rice, Melissa S.; Schrag, Daniel P.; Summons, Roger; Walter, Malcolm; Abelson, John; Knoll, Andrew H.

In: Precambrian Research, Vol. 266, 01.09.2015, p. 194-211.

Research output: Contribution to journalArticle

Martindale, RC, Strauss, JV, Sperling, EA, Johnson, JE, Van Kranendonk, M, Flannery, D, French, K, Lepot, K, Mazumder, R, Rice, MS, Schrag, DP, Summons, R, Walter, M, Abelson, J & Knoll, AH 2015, 'Sedimentology, chemostratigraphy, and stromatolites of lower Paleoproterozoic carbonates, Turee Creek Group, Western Australia', Precambrian Research, vol. 266, pp. 194-211. https://doi.org/10.1016/j.precamres.2015.05.021
Martindale, Rowan C. ; Strauss, Justin V. ; Sperling, Erik A. ; Johnson, Jena E. ; Van Kranendonk, Martin ; Flannery, David ; French, Katherine ; Lepot, Kevin ; Mazumder, Rajat ; Rice, Melissa S. ; Schrag, Daniel P. ; Summons, Roger ; Walter, Malcolm ; Abelson, John ; Knoll, Andrew H. / Sedimentology, chemostratigraphy, and stromatolites of lower Paleoproterozoic carbonates, Turee Creek Group, Western Australia. In: Precambrian Research. 2015 ; Vol. 266. pp. 194-211.
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AU - Martindale, Rowan C.

AU - Strauss, Justin V.

AU - Sperling, Erik A.

AU - Johnson, Jena E.

AU - Van Kranendonk, Martin

AU - Flannery, David

AU - French, Katherine

AU - Lepot, Kevin

AU - Mazumder, Rajat

AU - Rice, Melissa S.

AU - Schrag, Daniel P.

AU - Summons, Roger

AU - Walter, Malcolm

AU - Abelson, John

AU - Knoll, Andrew H.

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N2 - The ca. 2.45-2.22. Ga Turee Creek Group, Western Australia, contains carbonate-rich horizons that postdate earliest Proterozoic iron formations, bracket both Paleoproterozoic glaciogenic beds and the onset of the Great Oxidation Event (GOE), and predate ca. 2.2-2.05. Ga Lomagundi-Jatuli C-isotopic excursion(s). As such, Turee Creek carbonate strata provide an opportunity to characterize early Paleoproterozoic carbonate sedimentation and carbon cycle dynamics in the context of significant global change. Here, we report on the stratigraphy, sedimentology, petrology, carbon isotope chemostratigraphy, and stromatolite development for carbonate-rich successions within the pre-glacial part of the Kungarra Formation and the postglacial Kazput Formation.Kungarra carbonate units largely occur as laterally discontinuous beds within a thick, predominantly siliciclastic shelf deposit. While this succession contains thin microbialite horizons, most carbonates consist of patchy calcite overgrowths within a siliciclastic matrix. C-isotopic values show marked variation along a single horizon and even within hand samples, reflecting spatially and temporally variable mixing between dissolved inorganic carbon in seawater and isotopically light inorganic carbon generated via syn- and post-depositional remineralization of organic matter.In contrast, the Kazput carbonates consist of subtidal stromatolites, grainstones, and micrites deposited on a mixed carbonate-siliciclastic shelf. These carbonates exhibit moderate δ13C values of -2‰ to +1.5‰ and likely preserve a C-isotopic signature of seawater. Kazput carbonates, thus, provide some of the best available evidence that an interval of unexceptional C-isotopic values separates the Lomagundi-Jatuli C-isotopic excursion(s) from the initiation of the GOE as inferred from multiple sulfur isotopes (loss of mass independent fractionation). The Kazput Formation also contains unusual, m-scale stromatolitic buildups, which are composed of sub-mm laminae and discontinuous, convex upward lenticular precipitates up to a few mm in maximum thickness. Laminae, interpreted as microbial mat layers, contain quartz and clay minerals as well as calcite, whereas precipitate lenses consist of interlocking calcite anhedra, sometimes showing faint mm-scale banding. These cements formed either as infillings of primary voids formed by gas emission within penecontemporaneously lithified mats, or as local seafloor precipitates that formed on, or within, surface mats. It is possible that both mechanisms interacted to form the unique Kazput stromatolites. These microbialites speak to a distinctive interaction between life and environment early in the Paleoproterozoic Era.

AB - The ca. 2.45-2.22. Ga Turee Creek Group, Western Australia, contains carbonate-rich horizons that postdate earliest Proterozoic iron formations, bracket both Paleoproterozoic glaciogenic beds and the onset of the Great Oxidation Event (GOE), and predate ca. 2.2-2.05. Ga Lomagundi-Jatuli C-isotopic excursion(s). As such, Turee Creek carbonate strata provide an opportunity to characterize early Paleoproterozoic carbonate sedimentation and carbon cycle dynamics in the context of significant global change. Here, we report on the stratigraphy, sedimentology, petrology, carbon isotope chemostratigraphy, and stromatolite development for carbonate-rich successions within the pre-glacial part of the Kungarra Formation and the postglacial Kazput Formation.Kungarra carbonate units largely occur as laterally discontinuous beds within a thick, predominantly siliciclastic shelf deposit. While this succession contains thin microbialite horizons, most carbonates consist of patchy calcite overgrowths within a siliciclastic matrix. C-isotopic values show marked variation along a single horizon and even within hand samples, reflecting spatially and temporally variable mixing between dissolved inorganic carbon in seawater and isotopically light inorganic carbon generated via syn- and post-depositional remineralization of organic matter.In contrast, the Kazput carbonates consist of subtidal stromatolites, grainstones, and micrites deposited on a mixed carbonate-siliciclastic shelf. These carbonates exhibit moderate δ13C values of -2‰ to +1.5‰ and likely preserve a C-isotopic signature of seawater. Kazput carbonates, thus, provide some of the best available evidence that an interval of unexceptional C-isotopic values separates the Lomagundi-Jatuli C-isotopic excursion(s) from the initiation of the GOE as inferred from multiple sulfur isotopes (loss of mass independent fractionation). The Kazput Formation also contains unusual, m-scale stromatolitic buildups, which are composed of sub-mm laminae and discontinuous, convex upward lenticular precipitates up to a few mm in maximum thickness. Laminae, interpreted as microbial mat layers, contain quartz and clay minerals as well as calcite, whereas precipitate lenses consist of interlocking calcite anhedra, sometimes showing faint mm-scale banding. These cements formed either as infillings of primary voids formed by gas emission within penecontemporaneously lithified mats, or as local seafloor precipitates that formed on, or within, surface mats. It is possible that both mechanisms interacted to form the unique Kazput stromatolites. These microbialites speak to a distinctive interaction between life and environment early in the Paleoproterozoic Era.

KW - Great Oxidation Event

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KW - Kungarra Formation

KW - Lomagundi-Jatuli event

KW - Stromatolite

KW - Turee Creek Group

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