月の起源・進化・テクトニクス  [in Japanese] Lunar tectonics and its implications for the origin and evolution of the moon  [in Japanese]

地球型惑星や氷衛星は, 21世紀における構造地質学の重要な対象となるだろう。それらの表層部の変形が構造地質学の直接的対象であるが, そこから得られる知見は地域的あるいはグローバルな熱史, あるいは当該天体の起源や軌道進化に関する議論にもインパクトを与えうる。そうした研究の戦略を, 月を例として解説する。大事なのは, 地質構造発達史を定量的に把握することである。

Structural geology is finding its target on terrestrial planets and icy satellites. Among them the Moon will be the most extensively studied extra terrestrial object in the 21st Century. The finite deformation of lunar lithosphere is visualized by tectonic features such as wrinkle ridges and straight rilles. They show the secular and spatial changes of the surface, boundary condition of stress that has been controlled by endogenic and exogenic processes. Such information gives constraint not only on the mechanical properties of the lunar lithosphere, but also on the regional and global thermal histories and even on the origin of the Earth-Moon system.