K‐Pg extinction: Reevaluation of the heat‐fire hypothesis

@article{Robertson2013KPgER,
  title={K‐Pg extinction: Reevaluation of the heat‐fire hypothesis},
  author={Douglas Robertson and William M. Lewis and Peter M. F. Sheehan and Owen Brian Toon},
  journal={Journal of Geophysical Research: Biogeosciences},
  year={2013},
  volume={118},
  pages={329 - 336}
}
The global debris layer created by the end‐Cretaceous impact at Chicxulub contained enough soot to indicate that the entire terrestrial biosphere had burned. Preliminary modeling showed that the reentry of ejecta would have caused a global infrared (IR) pulse sufficient to ignite global fires within a few hours of the Chicxulub impact. This heat pulse and subsequent fires explain the terrestrial survival patterns in the earliest Paleocene, because all the surviving species were plausibly able… 
Revisiting wildfires at the K‐Pg boundary
The discovery of large amounts of soot in clays deposited at the Cretaceous‐Paleogene (K‐Pg) boundary and linked to the ~65 Ma Chicxulub impact crater led to the hypothesis that major wildfires were
Organic matter from the Chicxulub crater exacerbated the K–Pg impact winter
TLDR
Characteristics of polycyclic aromatic hydrocarbons in the Chicxulub crater sediments and at two deep ocean sites indicate a fossil carbon source that experienced rapid heating, consistent with organic matter ejected during the formation of the crater, and size distributions proximal and distal to the crater indicate the ejected carbon was dispersed globally by atmospheric processes.
An experimental assessment of the ignition of forest fuels by the thermal pulse generated by the Cretaceous–Palaeogene impact at Chicxulub
A large extraterrestrial body hit the Yucatán Peninsula at the end of the Cretaceous period. Models suggest that a substantial amount of thermal radiation was delivered to the Earth’s surface by the
On transient climate change at the Cretaceous−Paleogene boundary due to atmospheric soot injections
TLDR
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.
Mass Extinction at the Cretaceous–Paleogene (K–Pg) Boundary
  • T. Maruoka
  • Environmental Science, Geography
    Astrobiology
  • 2019
One of the “Big Five” mass extinctions in the Phanerozoic Eon occurred at the Cretaceous–Paleogene (K–Pg) boundary (66.0 million years ago). The K–Pg mass extinction was triggered by a meteorite
Global climate change driven by soot at the K-Pg boundary as the cause of the mass extinction
TLDR
It is shown that the stratospheric aerosols did not induce darkness that resulted in milder cooling than previously thought, which would explain the known mortality and survival on land and in oceans at the Cretaceous/Paleogene boundary.
Postimpact earliest Paleogene warming shown by fish debris oxygen isotopes (El Kef, Tunisia)
TLDR
Analysis of oxygen isotopic composition of fish debris, phosphatic microfossils that are relatively resistant to diagenetic alteration, from the Global Stratotype Section and Point for the Cretaceous/Paleogene boundary at El Kef, Tunisia reports an ~1 per mil decrease in oxygen isotopy values beginning at the boundary and spanning ~300 centimeters of section, which matches expectations for impact-initiated greenhouse warming.
On the causes of mass extinctions
Causes and Climatic Consequences of the Impact Winter at the Cretaceous‐Paleogene Boundary
Prolonged periods of low light and cold temperatures at Earth's surface are hypothesized effects of the end‐Cretaceous asteroid impact. However, debate remains about the causes and consequences of
Widespread and intense wildfires at the Paleocene-Eocene boundary
doi: 10.7185/geochemlet.1906 Discovery of impact spherules associated with the onset of the Carbon Isotope Excursion (CIE) that marks the Paleocene-Eocene (P-E) boundary (~56 Ma) indicates that the
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TLDR
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TLDR
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TLDR
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TLDR
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