The eruptive tempo of Deccan volcanism in relation to the Cretaceous-Paleogene boundary
Sprain, C.J.; Renne, P.R.; Vanderkluysen, L.; Pande, K.; Self, S.; Mittal, T. (2019). The eruptive tempo of Deccan volcanism in relation to the Cretaceous-Paleogene boundary. Science (Wash.) 363(6429): 866-870. https://dx.doi.org/10.1126/science.aav1446
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075; e-ISSN 1095-9203, meer
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| Auteurs | | Top |
- Sprain, C.J.
- Renne, P.R.
- Vanderkluysen, L.
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- Pande, K.
- Self, S.
- Mittal, T.
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| Abstract |
Late Cretaceous records of environmental change suggest that Deccan Traps (DT) volcanism contributed to the Cretaceous-Paleogene boundary (KPB) ecosystem crisis. However, testing this hypothesis requires identification of the KPB in the DT. We constrain the location of the KPB with high-precision argon-40/argon-39 data to be coincident with changes in the magmatic plumbing system. We also found that the DT did not erupt in three discrete large pulses and that >90% of DT volume erupted in <1 million years, with ~75% emplaced post-KPB. Late Cretaceous records of climate change coincide temporally with the eruption of the smallest DT phases, suggesting that either the release of climate-modifying gases is not directly related to eruptive volume or DT volcanism was not the source of Late Cretaceous climate change. |
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