• DOI:10.1126/science.1165988
• Corpus ID: 206516356

Lunar Radar Sounder Observations of Subsurface Layers Under the Nearside Maria of the Moon

@article{Ono2008LunarRS,
  title={Lunar Radar Sounder Observations of Subsurface Layers Under the Nearside Maria of the Moon},
  author={Takayuki Ono and Atsushi Kumamoto and Hiromu Nakagawa and Yasushi Yamaguchi and Shoko Oshigami and Akihiro Yamaji and T. Kobayashi and Yoshiya Kasahara and Hiroshi Oya},
  journal={Science},
  year={2008},
  volume={323},
  pages={909 - 912}
}

• T. Ono, A. Kumamoto, +6 authors H. Oya
• Published 1 December 2008
• Geology
• Science

Observations of the subsurface geology of the Moon help advance our understanding of lunar origin and evolution. Radar sounding from the Kaguya spacecraft has revealed subsurface layers at an apparent depth of several hundred meters in nearside maria. Comparison with the surface geology in the Serenitatis basin implies that the prominent echoes are probably from buried regolith layers accumulated during the depositional hiatus of mare basalts. The stratification indicates a tectonic quiescence between 3.55 and 2.84 billion years ago; mare ridges were formed subsequently. The basalts that accumulated during this quiet period have a total thickness of only a few hundred meters. These observations suggest that mascon loading did not produce the tectonics in Serenitatis after 3.55 billion years ago. Global cooling probably dominated the tectonics after 2.84 billion years ago.