Publication Abstracts

Rampino et al. 2020

Rampino, M.R., E. Baransky, and S. Rodriguez, 2020: Proxy evidence from the Gartnerkofel-1 core (Carnic Alps, Austria) for hypoxic conditions in the western Tethys during the end-Permian mass-extinction event. Chem. Geol., 533, 119434, doi:10.1016/j.chemgeo.2019.119434.

The most severe mass extinction in the Phanerozoic in the latest Permian Period (251.9 Ma), has been attributed to environmental effects related to the massive coeval Siberian flood-basalt eruptions. A potential causal link between the eruptions and the marine extinctions arises from lethal global warming from greenhouse-gas emissions and the resulting development of widespread hypoxic conditions in the warm oceans. The 331-m Gartnerkofel-1 core (Carnic Alps, Austria) penetrated the Permian-Triassic boundary interval in a western Tethys shallow carbonate-ramp setting. We calculated U/Th ratios and element-enrichment factors (for U, Cr, V, Co, and Ni) using the previously published raw elemental data from the core. These redox-sensitive proxy calculations provide evidence for an ∼60-ky long episode of anoxic to euxinic ocean conditions in the shallow western Tethys at the time of the abrupt end-Permian mass extinction (EPME). Subsequent fluctuating dysoxic conditions were coincident with a negative excursion of δ13Ccarb that is estimated to have lasted ~450 ky in the earliest Triassic at the GK-1 site. These findings in a high-deposition-rate section support previous reports of widespread anoxia in the western Tethys, and in the oceans in general, coincident with the EPME and its aftermath.

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BibTeX Citation

@article{ra09900v,
  author={Rampino, M. R. and Baransky, E. and Rodriguez, S.},
  title={Proxy evidence from the Gartnerkofel-1 core (Carnic Alps, Austria) for hypoxic conditions in the western Tethys during the end-Permian mass-extinction event},
  year={2020},
  journal={Chem. Geol.},
  volume={533},
  pages={119434},
  doi={10.1016/j.chemgeo.2019.119434},
}

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RIS Citation

TY  - JOUR
ID  - ra09900v
AU  - Rampino, M. R.
AU  - Baransky, E.
AU  - Rodriguez, S.
PY  - 2020
TI  - Proxy evidence from the Gartnerkofel-1 core (Carnic Alps, Austria) for hypoxic conditions in the western Tethys during the end-Permian mass-extinction event
JA  - Chem. Geol.
VL  - 533
SP  - 119434
DO  - 10.1016/j.chemgeo.2019.119434
ER  -

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