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Lunar activity from recent gas release.

Peter H Schultz1, Matthew I Staid, Carlé M Pieters

  • 1Brown University, Geological Sciences, Providence, Rhode Island 02912-1846, USA. peter_schultz@brown.edu

Nature
|November 10, 2006
PubMed
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Recent lunar surface changes suggest ongoing out-gassing from the Moon

Area of Science:

  • Lunar geology
  • Planetary science
  • Astrogeology

Background:

  • Widespread lunar volcanism ceased approximately 3.2 billion years ago.
  • Lunar surface evolution was thought to be dominated by impact cratering for the last billion years.
  • The Moon is generally considered geologically inactive, aside from moonquakes and fault systems.

Purpose of the Study:

  • To investigate recent modifications to the lunar surface within the Ina structure.
  • To determine the age and formation processes of features in the Ina structure.
  • To explore the implications of these findings for lunar out-gassing and volatile content.

Main Methods:

  • Analysis of crater statistics and degradation.
  • Assessment of topographic relief preservation.

Related Experiment Videos

  • Evaluation of regolith spectral maturity (freshness).

    • Main Results:

    • Features within the Ina structure show evidence of recent resurfacing, with ages as young as 10 million years.
    • These features may still be actively forming.
    • The findings challenge the assumption that only impact craters have reshaped the Moon recently.

    Conclusions:

    • Recent, episodic out-gassing from the Moon's interior likely created the observed features in the Ina structure.
    • This out-gassing may explain radiogenic gases detected in past lunar missions.
    • Further monitoring is needed to analyze gas composition and understand deep lunar volatiles.