On impact and volcanism across the Cretaceous-Paleogene boundary

@article{Hull2020OnIA,
  title={On impact and volcanism across the Cretaceous-Paleogene boundary},
  author={Pincelli M. Hull and Andr{\'e} Bornemann and Donald E. Penman and Michael J. Henehan and Richard D. Norris and Paul A. Wilson and Peter W. Blum and Laia Alegret and Sietske J. Batenburg and Paul R. Bown and Timothy J. Bralower and Cecile Cournede and Alexander Deutsch and Barbara Donner and Oliver Friedrich and Sofie Jehle and Hojung Kim and Dick Kroon and Peter C. Lippert and Dominik Loroch and Iris Moebius and Kazuyoshi Moriya and Daniel J. Peppe and Gregory E. Ravizza and Ursula R{\"o}hl and Jonathan Douglas Schueth and Julio Sep{\'u}lveda and Philip F. Sexton and Elizabeth C. Sibert and Kasia K. Śliwińska and Roger Everett Summons and Ellen Thomas and Thomas Westerhold and Jessica H. Whiteside and Tatsuhiko Yamaguchi and James C. Zachos},
  journal={Science},
  year={2020},
  volume={367},
  pages={266 - 272}
}
An impact with a dash of volcanism Around the time of the end-Cretaceous mass extinction that wiped out dinosaurs, there was both a bolide impact and a large amount of volcanism. Hull et al. ran several temperature simulations based on different volcanic outgassing scenarios and compared them with temperature records across the extinction event. The best model fits to the data required most outgassing to occur before the impact. When combined with other lines of evidence, these models support… 

Asteroid impact, not volcanism, caused the end-Cretaceous dinosaur extinction

The results support the asteroid impact as the main driver of the non-avian dinosaur extinction, by contrast, induced warming from volcanism mitigated the most extreme effects of asteroid impact, potentially reducing the extinction severity.

Contribution of orbital forcing and Deccan volcanism to global climatic and biotic changes across the Cretaceous-Paleogene boundary at Zumaia, Spain

Untangling the timing of the environmental effects of Deccan volcanism with respect to the Chicxulub impact is instrumental to fully assessing the contributions of both to climate change over the

Intrusions induce global warming before continental flood basalt volcanism

Extinction events are known to correlate with continental flood basalt eruptions. Massive carbon degassing from these eruptions can have catastrophic impacts on the global climate and biospheres.

Intrusion Induced Global Warming Preceding Continental Flood Basalt Volcanism

Temporal correlations between continental flood basalt eruptions and mass extinctions are well known 1. Massive carbon degassing from volcanism of Large Igneous Provinces can cause catastrophic

An evaluation of Deccan Traps eruption rates using geochronologic data

Abstract. Recent attempts to establish the eruptive history of the Deccan Traps large igneous province have used both U−Pb (Schoene et al., 2019) and 40Ar/39Ar (Sprain et al., 2019) geochronology.

Reconciling early Deccan Traps CO2 outgassing and pre-KPB global climate

Constraints on CO2 contents of early Deccan Traps lavas based on studies of olivine-hosted melt inclusions are presented and it is found that the earliest DeCCan magmas were more CO2 rich, which it is hypothesized facilitated more efficient flushing and outgassing from intrusive magmas.

Reevaluating Links Between Meteorite Impacts and Early Cenozoic Global Warming

The Paleocene‐Eocene Thermal Maximum (PETM) and the lower Chron 29n hyperthermal event were recently proposed to have been triggered by the meteorite impacts that formed the Marquez Dome (Texas, USA;
...

References

SHOWING 1-10 OF 373 REFERENCES

State shift in Deccan volcanism at the Cretaceous-Paleogene boundary, possibly induced by impact

High-precision dating of Deccan Traps volcanic units suggests an increase in volcanism associated with the Chicxulub impact, which suggests postextinction recovery of marine ecosystems was probably suppressed until after the accelerated volcanism waned.

The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary

Records of the global stratigraphy across this boundary are synthesized to assess the proposed causes of the Cretaceous-Paleogene boundary and conclude that the Chicxulub impact triggered the mass extinction.

The eruptive tempo of Deccan volcanism in relation to the Cretaceous-Paleogene boundary

It is 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, 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.

On transient climate change at the Cretaceous−Paleogene boundary due to atmospheric soot injections

The effects of a worldwide layer of soot found at the Cretaceous−Paleogene boundary is explored and it is found that it causes near-total darkness that shuts down photosynthesis, produces severe cooling at the surface and in the oceans, and leads to moistening and warming of the stratosphere that drives extreme ozone destruction.

End-Cretaceous extinction in Antarctica linked to both Deccan volcanism and meteorite impact via climate change

Species extinction at Seymour Island occurred in two pulses that coincide with the two observed warming events, directly linking the end-Cretaceous extinction at this site to both volcanic and meteorite events via climate change.

Rapid ocean acidification and protracted Earth system recovery followed the end-Cretaceous Chicxulub impact

It is shown that the impact caused rapid ocean acidification, and that the resulting ecological collapse in the oceans had long-lasting effects for global carbon cycling and climate, and insights into the drivers of the last mass extinction, the recovery of marine carbon cycling in a postextinction world are provided.

Rapid short-term cooling following the Chicxulub impact at the Cretaceous–Paleogene boundary

It is demonstrated unambiguously that the impact at the Cretaceous–Paleogene boundary (K–Pg, ∼66 Mya) was followed by a so-called “impact winter,” which was the result of the injection of large amounts of dust and aerosols into the stratosphere and significantly reduced incoming solar radiation for decades.

Macrofossil evidence for a rapid and severe Cretaceous–Paleogene mass extinction in Antarctica

It is shown that the extinction was rapid and severe in Antarctica, with no significant biotic decline during the latest Cretaceous, contrary to previous studies.

Time Scales of Critical Events Around the Cretaceous-Paleogene Boundary

Radiometric dating establishes the mass extinction that killed the dinosaurs as synchronous with a large asteroid impact between the Cretaceous-Paleogene boundary and associated mass extinctions with the Chicxulub bolide impact to within 32,000 years.

Triggering of the largest Deccan eruptions by the Chicxulub impact

New constraints on the timing of the Cretaceous-Paleogene mass extinction and the Chicxulub impact, together with a particularly voluminous and apparently brief eruptive pulse toward the end of the
...