Geochemical signatures in Late Triassic brachiopods from New Caledonia

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Standard

Geochemical signatures in Late Triassic brachiopods from New Caledonia. / Ullmann, C. V.; Campbell, H. J.; Frei, R.; Korte, C.

In: New Zealand Journal of Geology and Geophysics, Vol. 57, No. 4, 10.2014, p. 420-431.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Ullmann, CV, Campbell, HJ, Frei, R & Korte, C 2014, 'Geochemical signatures in Late Triassic brachiopods from New Caledonia', New Zealand Journal of Geology and Geophysics, vol. 57, no. 4, pp. 420-431. https://doi.org/10.1080/00288306.2014.958175

APA

Ullmann, C. V., Campbell, H. J., Frei, R., & Korte, C. (2014). Geochemical signatures in Late Triassic brachiopods from New Caledonia. New Zealand Journal of Geology and Geophysics, 57(4), 420-431. https://doi.org/10.1080/00288306.2014.958175

Vancouver

Ullmann CV, Campbell HJ, Frei R, Korte C. Geochemical signatures in Late Triassic brachiopods from New Caledonia. New Zealand Journal of Geology and Geophysics. 2014 Oct;57(4):420-431. https://doi.org/10.1080/00288306.2014.958175

Author

Ullmann, C. V. ; Campbell, H. J. ; Frei, R. ; Korte, C. / Geochemical signatures in Late Triassic brachiopods from New Caledonia. In: New Zealand Journal of Geology and Geophysics. 2014 ; Vol. 57, No. 4. pp. 420-431.

Bibtex

@article{5ae2b7c610314af09c14bbc69a00f438,
title = "Geochemical signatures in Late Triassic brachiopods from New Caledonia",
abstract = "Brachiopod fossils from the sedimentary sequences of the T{\'e}remba Terrane (New Caledonia) provide a unique opportunity to study the environmental parameters of the Late Triassic. 87Sr/86Sr ratios, δ13C and δ18O values, and Sr/Ca, Mg/Ca and Mn/Ca ratios were measured on brachiopods from Oretian to Otapirian (Norian to Rhaetian) fossil localities of the Baie de St.-Vincent area. Post-depositional impacts on the geochemical proxies were investigated by analysing calcite cements and partly recrystallized shell material. Diagenetic fluids carried strontium with a low 87Sr/86Sr ratio of c. 0.7065, and light δ13C values of c.-20‰, suggesting major contributions by oxidized organic matter. Diagenetic equilibrium was reached at δ18O values of c.-12‰, very low Sr/Ca ratios of < 0.05 mmol/mol and locally variable Mn/Ca ratios of up to 5.9 mmol/mol. Results from the best-preserved samples suggest that calcification temperatures of Warepan and Otapirian brachiopods from New Caledonia were consistently ≥ 15 °C.",
keywords = "Sr/Sr, Brachiopod, Diagenesis, New Caledonia, Stable isotopes, Trace elements",
author = "Ullmann, {C. V.} and Campbell, {H. J.} and R. Frei and C. Korte",
year = "2014",
month = oct,
doi = "10.1080/00288306.2014.958175",
language = "English",
volume = "57",
pages = "420--431",
journal = "New Zealand Journal of Geology, and Geophysics",
issn = "0028-8306",
publisher = "Taylor & Francis Asia Pacific (Singapore)",
number = "4",

}

RIS

TY - JOUR

T1 - Geochemical signatures in Late Triassic brachiopods from New Caledonia

AU - Ullmann, C. V.

AU - Campbell, H. J.

AU - Frei, R.

AU - Korte, C.

PY - 2014/10

Y1 - 2014/10

N2 - Brachiopod fossils from the sedimentary sequences of the Téremba Terrane (New Caledonia) provide a unique opportunity to study the environmental parameters of the Late Triassic. 87Sr/86Sr ratios, δ13C and δ18O values, and Sr/Ca, Mg/Ca and Mn/Ca ratios were measured on brachiopods from Oretian to Otapirian (Norian to Rhaetian) fossil localities of the Baie de St.-Vincent area. Post-depositional impacts on the geochemical proxies were investigated by analysing calcite cements and partly recrystallized shell material. Diagenetic fluids carried strontium with a low 87Sr/86Sr ratio of c. 0.7065, and light δ13C values of c.-20‰, suggesting major contributions by oxidized organic matter. Diagenetic equilibrium was reached at δ18O values of c.-12‰, very low Sr/Ca ratios of < 0.05 mmol/mol and locally variable Mn/Ca ratios of up to 5.9 mmol/mol. Results from the best-preserved samples suggest that calcification temperatures of Warepan and Otapirian brachiopods from New Caledonia were consistently ≥ 15 °C.

AB - Brachiopod fossils from the sedimentary sequences of the Téremba Terrane (New Caledonia) provide a unique opportunity to study the environmental parameters of the Late Triassic. 87Sr/86Sr ratios, δ13C and δ18O values, and Sr/Ca, Mg/Ca and Mn/Ca ratios were measured on brachiopods from Oretian to Otapirian (Norian to Rhaetian) fossil localities of the Baie de St.-Vincent area. Post-depositional impacts on the geochemical proxies were investigated by analysing calcite cements and partly recrystallized shell material. Diagenetic fluids carried strontium with a low 87Sr/86Sr ratio of c. 0.7065, and light δ13C values of c.-20‰, suggesting major contributions by oxidized organic matter. Diagenetic equilibrium was reached at δ18O values of c.-12‰, very low Sr/Ca ratios of < 0.05 mmol/mol and locally variable Mn/Ca ratios of up to 5.9 mmol/mol. Results from the best-preserved samples suggest that calcification temperatures of Warepan and Otapirian brachiopods from New Caledonia were consistently ≥ 15 °C.

KW - Sr/Sr

KW - Brachiopod

KW - Diagenesis

KW - New Caledonia

KW - Stable isotopes

KW - Trace elements

U2 - 10.1080/00288306.2014.958175

DO - 10.1080/00288306.2014.958175

M3 - Journal article

AN - SCOPUS:84911954439

VL - 57

SP - 420

EP - 431

JO - New Zealand Journal of Geology, and Geophysics

JF - New Zealand Journal of Geology, and Geophysics

SN - 0028-8306

IS - 4

ER -

ID: 138422843