Cited by 45Paleontology and Stratigraphy of FossilsGeological and Geochemical AnalysisGeology and Paleoclimatology Research

Evolution of Neoproterozoic Wonoka–Shuram Anomaly-aged carbonates: Evidence from clumped isotope paleothermometry

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Loyd, S.J., Corsetti, F.A., Eagle, R.A., Hagadorn, J.W., Shen, Y., Zhang, X., Bonifacie, M., Tripati, A.K.·2015·Precambrian Research

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Crossref · 10.1016/j.precamres.2015.04.010

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  • The high temperatures in earlier Doushantuo studies are inferred to reflect postdepositional hydrothermal alteration of host rocks and loss of original Δ47 signals.

    “These high temperatures are inferred to reflect postdepositional hydrothermal alteration of the host rocks and loss of original Δ 47 signals (23,24)”

    From Massive formation of early diagenetic dolomite in the Ediacaran ocean: Constraints on the "dolomite problem" (2020) · cites this paper as [24]

    Section 5.1 (page unavailable) says the South China carbonate temperatures are consistent with burial heating and interprets the rocks as recrystallized and reequilibrated; §5.4.2 links high clumped-isotope temperatures to burial recrystallization. The paper does not identify hydrothermal alteration as the cause of those temperatures or specifically establish loss of the original Δ47 signals in earlier Doushantuo studies. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • The TΔ47 records from the Zhangcunping drillcores differ from earlier Doushantuo dolostone studies at Huajipo and Jiulongwan, which yielded generally low Δ47 values corresponding to significantly higher temperatures up to 224 °C.

    “We note that the T Δ47 records from the Zhangcunping drillcores differ from results for Doushantuo dolostones in earlier studies of the Huajipo (23) and Jiulongwan (23,24) shelf sections in the Yangtze Gorges area”

    From Massive formation of early diagenetic dolomite in the Ediacaran ocean: Constraints on the "dolomite problem" (2020) · cites this paper as [24]

    The Results (section 4) report clumped-isotope temperatures for South China carbonates, and Table 1 lists Doushantuo dolomite samples. But our copy does not identify Huajipo or report a temperature of 224 °C for those samples; it gives a South China range of 38–164 °C. It also does not compare either named shelf section with Zhangcunping drillcores. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • Original TΔ47 signatures are subject to secondary alteration via meteoric diagenesis, recrystallization, and solid-state reordering during geological burial, all of which shift values to higher-than-original TΔ47 values.

    “Original T Δ47 signatures are subject to secondary alteration via meteoric diagenesis, recrystallization, and solid-state reordering during geological burial, all of which result in shifts to higher-than-original T Δ47 values (7,(23)(24)(25).”

    From Massive formation of early diagenetic dolomite in the Ediacaran ocean: Constraints on the "dolomite problem" (2020) · cites this paper as [24]

    Section 5.2 says solid-state reordering can produce higher clumped-isotope temperatures, and §5.4.2 links high temperatures to burial recrystallization. But §5.4.1 treats meteoric diagenesis as a possible earlier signal, not as a process that necessarily raises TΔ47; §5.3 also finds evidence against pervasive reordering in the studied carbonates. The claim overstates the paper by saying all three processes shift values higher than the original temperature. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • No geological process is known to reduce TΔ47 values.

    “Because no geological process is known to reduce T Δ47 values (7, 23-25)”

    From Massive formation of early diagenetic dolomite in the Ediacaran ocean: Constraints on the "dolomite problem" (2020) · cites this paper as [24]

    Section 5.3 discusses burial heating and solid-state reordering as processes that can alter Δ47 values, while section 5.1 describes a trend toward higher clumped-isotope temperatures during burial. Neither passage states that no geological process can reduce TΔ47 values. Searches for lower clumped-isotope temperatures and the claimed absence of such a process did not find that assertion in our copy. (LLM, conf=0.70)

    Experimental — accuracy not yet measured

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2 of the 82 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. [7]7. Bonifacie, M., Ferry, J.M., Horita, J., Vasconcelos, C., Passey, B.H., Eiler, J.M. (2010) Calibration and applications of the dolomite clumped isotope thermometer to high temperatures, Goldschmidt Conference Abstract, Knoxville, Tennessee, June 13-18.

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Authors
Loyd, S. J., Corsetti, F. A., Eagle, R. A., Hagadorn, J. W., Shen, Y., Zhang, X., Bonifacie, M., & Tripati, A. K.
Affiliations
  • University of Southern California (US)
  • California Institute of Technology (US)
  • Denver Museum of Nature and Science (US)
  • University of Science and Technology of China (CN)
  • Centre National de la Recherche Scientifique (FR)
  • California NanoSystems Institute (US)
Corresponding author
  • Loyd, S.J.
  • Tripati, A.K.
Venue
Precambrian Research
Publisher
Elsevier BV
Published
2015-07
Volume
264
Pages
179-191
ISSN
0301-9268 (ISSN-L)
OpenAlex
W2071598269
Cited by
45
References
82
Citations by year
2026: 1 · 2025: 4 · 2024: 4 · 2023: 1 · 2022: 2 · 2021: 5 · 2020: 2 · 2019: 3 · 2018: 8 · 2017: 8 · 2016: 7
FWCI
5.82
Type
journal article
Language
en
Open access
Locations
  • Precambrian Research (acceptedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion)
  • HAL (submittedVersion, other-oa)
  • eScholarship (California Digital Library) (submittedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
Funders
  • Agouron Institute
  • National Science Foundation (ARC-1215551, EAR-1024929, EAR-0949191, EAR-1325054, EAR-1352212)
  • BES (DE-SC0010288)
  • American Chemical Society (51182-DNI2)
  • National Natural Science Foundation of China (NNSFC 41025011)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geochemical Analysis
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
Keywords
Neoproterozoic carbonates, clumped isotope thermometry, carbonate recrystallization, carbon isotope excursion, diagenesis

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