The “Shiva Hypothesis”: Impacts, mass extinctions, and the galaxy

@article{Rampino1996TheH,
  title={The “Shiva Hypothesis”: Impacts, mass extinctions, and the galaxy},
  author={M. Rampino and B. M. Haggerty},
  journal={Earth, Moon, and Planets},
  year={1996},
  volume={72},
  pages={441-460}
}
The “Shiva Hypothesis”, in which recurrent, cyclical mass extinctions of life on Earth result from impacts of comets or asteroids, provides a possible unification of important processes in astrophysics, planetary geology, and the history of life. Collisions with Earth-crossing asteroids and comets ≥ a few km in diameter are calculated to produce widespread environmental disasters (dust clouds, wildfires), and occur with the proper frequency to account for the record of five major mass… Expand
A Unified Theory of Impact Crises and Mass Extinctions: Quantitative Tests
TLDR
Several quantitative tests of a general hypothesis linking impacts of large asteroids and comets with mass extinctions of life are possible based on astronomical data, impact dynamics, and geological information predict that impacts of objects ≥ 5 km in diameter could be sufficient to explain the record of 25 extinction pulses. Expand
Galactic Triggering of Periodic Comet Showers and Mass Extinctions on Earth
Geological and astronomical studies can be synthesized to provide a hypothesis connecting the history of life on Earth with the dynamics of the Galaxy. Impacts of comets and asteroids on the EarthExpand
The Galactic Theory of Mass Extinctions: an Update
Astronomical and geological evidence is consistent with the hypothesis that mass extinctions of life on Earth are related to impacts of comets whose flux is partly modulated by the dynamics of theExpand
The Alvarez Impact Theory of Mass Extinction; Limits to its Applicability and the “Great Expectations Syndrome”
For the past three decades, the Alvarez impact theory of mass extinction, causally related to catastrophic meteorite impacts, has been recurrently applied to multiple extinction boundaries. However,Expand
Extraterrestrial impacts on earth: the evidence and the consequences
  • R. Grieve
  • Geology
  • Geological Society, London, Special Publications
  • 1998
Abstract The terrestrial record of impact events is incomplete and evolving. There are inherent biases in ages, distribution and sizes of known impact events that result from the high levels ofExpand
The Geologic Record of Destructive Impact Events on Earth
The Earth is the most geologically active of the terrestrial planets and it has retained the poorest sample of the record of hypervelocity impact by interplanetary bodies throughout geologic time.Expand
Giant meteoroid impacts can cause volcanism
We present a model to assess the viability of the creation of volcanic eruptions of up to flood-basalt size from a giant impactor striking a relatively thin lithosphere. A 300-km-radius crater inExpand
Factors responsible for catastrophic extinction of marine organisms at the Mesozoic-Cenozoic boundary
The mass death of organisms at the Cretaceous-Tertiary boundary (KT boundary) resulted in the extinction of approximately half of marine genera. Some taxa had degraded by the end of the Cretaceous toExpand
The Terrestrial Cratering Record
The Earth is the most endogenically active of the terrestrial planets and thus, has retained the poorest sample of impacts that have occurred throughout geologic time. The current known sampleExpand
Global repeating events in the history of the Earth and the motion of the Sun in the Galaxy
Chronological analyses of correlations between certain global repeating events (mass extinctions of marine organisms, meteorite impacts, and flashes in the frequency of geomagnetic reversals) duringExpand
...
1
2
3
...

References

SHOWING 1-10 OF 86 REFERENCES
The relevance of the background impact flux to cyclic impact/mass extinction hypotheses
Abstract The belief that mass extinctions of species on Earth have occurred on a ∼26- to 33-my cycle is supported by some rather equivocal geological evidence. This has prompted a search for cosmicExpand
Terrestrial mass extinctions, cometary impacts and the Sun's motion perpendicular to the galactic plane
Episodes of mass extinctions on the Earth are now strongly suspected to be cyclical1. We report here that our analysis of the data of Raup and Sepkoski1 suggests that the dominant cyclicity in majorExpand
The case for extraterrestrial causes of extinction.
  • D. Raup
  • Geology, Medicine
  • Philosophical transactions of the Royal Society of London. Series B, Biological sciences
  • 1989
TLDR
The challenge for future research is to develop a new calculus for treating biostratigraphic data so that fossils can provide more accurate assessments of the timing of extinctions. Expand
Extinction of species by periodic comet showers
A 26-Myr periodicity has recently been seen in the fossil record of extinction in the geological past1. At least two of these extinctions are known to be associated with the impact on the Earth of aExpand
Cometary impacts into ocean: their recognition and the threshold constraint for biological extinctions
The Montagnais impact crater is presently the only site in the ocean where the effect of a meteorite fall on marine organisms has been studied. The impact crater is 45 km in diameter and was formedExpand
Major episodes of geologic change: correlations, time structure and possible causes
Abstract Published data sets of major geologic events of the past∼ 250Myr (extinction events, sea-level lows, continental flood-basalt eruptions, mountain-building events, abrupt changes in sea-floorExpand
Evidence from crater ages for periodic impacts on the Earth
Recent evidence has indicated that the impact of a comet or asteroid may have been responsible for mass extinction at the ends of both the Cretaceous1 and the Eocene2–4. Quantitative analysis by RaupExpand
Astronomical Catastrophes in Earth History
The boundary between the Cretaceous and Tertiary epochs has now been firmly linked to a large impact structure centered on Chicxulub in Yucatan. This crater has an age of 65.0 ± 0.1 million years.Expand
A perspective on the evidence for periodic cometary impacts on Earth
Abstract Recent suggestions of periodic cometary showers coincident with mass extinctions have prompted a review of the terrestrial cratering record. From the point of view of completeness of searchExpand
Episodes of terrestrial geologic activity during the past 260 million years: A quantitative approach
Records of major geologic events of the past ∼260 Myr including: biologic extinction events, ocean-anoxic and black-shale events, major changes in sea level, major evaporite (salt) deposits,Expand
...
1
2
3
4
5
...