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An efficient lightning energy source on the early Earth.

R D Hill1

  • 1Chem & Nuc. Eng. Dept., University of California, Santa Barbara 93106, USA.

Origins of Life and Evolution of the Biosphere : the Journal of the International Society for the Study of the Origin of Life
|January 1, 1992
PubMed
Summary

Early Earth lightning, particularly from volcanoes, may have been more effective for prebiotic synthesis than previously thought. This research explores localized electrical discharges as a key factor in the origin of life.

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Area of Science:

  • Astrobiology
  • Geochemistry
  • Planetary Science

Background:

  • The Miller-Urey experiment (1959) proposed lightning as a primary source for early life's chemical building blocks.
  • Subsequent reviews questioned the efficiency of widespread electrical discharges for prebiotic synthesis.
  • Archaean volcanic activity presents a unique geological context for early Earth atmospheric chemistry.

Purpose of the Study:

  • To re-evaluate the role of electrical discharges in prebiotic synthesis.
  • To investigate the potential advantages of localized volcanic lightning over global sources.
  • To explore novel hypotheses for the origin of life on early Earth.

Main Methods:

  • Review of existing data on electrical discharges and atmospheric chemistry.

Related Experiment Videos

  • Geological analysis of Archaean volcanic environments.
  • Modeling of chemical reactions under simulated early Earth conditions.

    • Main Results:

    • Localized lightning associated with Archaean volcanoes offers distinct advantages for prebiotic synthesis.
    • Specific volcanic gases and aerosols may enhance the yield of organic molecules.
    • Volcanic lightning provides a more concentrated and sustained energy source compared to diffuse global lightning.

    Conclusions:

    • Volcanic lightning represents a highly favorable, localized source for prebiotic chemical evolution.
    • This localized model offers a compelling alternative to previously proposed global synthesis mechanisms.
    • Understanding these specific geological-atmospheric interactions is crucial for origin-of-life research.