Japan Geoscience Union Meeting 2016

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Poster

Symbol P (Space and Planetary Sciences) » P-PS Planetary Sciences

[P-PS13] Lunar science and exploration

Sun. May 22, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Hiroshi Nagaoka(Waseda Univ.), Tomokatsu Morota(Graduate School of Environmental Studies, Nagoya University), Chikatoshi Honda(The University of Aizu), Masaki N Nishino(Institute for Space-Earth Environmental Research, Nagoya University)

5:15 PM - 6:30 PM

[PPS13-P11] One-dimensional crater chronology: A method of estimating the termination age of faulting

*Yuko Daket1, Atsushi Yamaji1, Katsushi Sato1 (1.Graduate School of Science, Kyoto University)

Keywords:Moon, Tectonic history, Crater chronology, Mare ridge

The timing of the tectonic deformation will be a clue to distinguish the origins of geological structures among global cooling (Solomon and Chaiken, 1976), orbital evolution of the Earth-Moon system (Melosh, 1980) and subsidence by the loads of mare basalts (e.g., Solomon and Head, 1980). There are a number of deformed and undeformed craters on a fault on the lunar surface. Undeformed craters mean that they were formed after the fault ceased its tectonic activity. In order to estimate the termination age of faulting, we propose a new method named one-dimensional crater chronology. The method converts the linear density of the undeformed craters on a fault into the termination age. By means of numerical experiments we estimate the relationship between one-dimensional crater size-frequency distribution and the termination age.