Japan Geoscience Union Meeting 2018

Presentation information

[EJ] Evening Poster

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

[P-PS05] Lunar science and exploration

Wed. May 23, 2018 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Hiroshi Nagaoka(Waseda Univ.), Tomokatsu Morota(Graduate School of Environmental Studies, Nagoya University), Masaki N (名古屋大学宇宙地球環境研究所, 共同), Masahiro KAYAMA(Department of Earth and Planetary Material Sciences, Faculty of Science, Tohoku University)

[PPS05-P03] Characterization of L1613 , LUNA 16 regolith sample

*Watanabe Hiromi1, Kentaro Terada1, Shoichiro Yokota1, Yosuke Kawai1, Narumi Moromoto1, Yuji Sano2, Takanori Kagoshima2, Naoto Takahata2, Eric Galimov3 (1.Osaka University, 2.Division of Ocean and Earth Systems, Atmosphere and Ocean Research Institute, University of Tokyo, 3.Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Science)

Keywords:Lunar, LUNA 16 regolith sample, in-situ U-Pb analysis, pyroxene mineral

Lunar sample is important to discuss lunar evolution. Lunar regolith is the mixture of fine grains/powders found on the surface of the Moon, and is considered to be the result of mechanical disintegration of basaltic and anorthositic rocks, caused by continuous meteoric bombardment over billions of years. So, for the chronological studies on regolith, it should be taken into account that individual grains have a different origin.In this work, we report the characterization of L1613, LUNA 16 regolith collected from Mare Foecunditatis. We performed elemental mapping of about 1500 grainsusing Spectral imaging function of SEM-EDS, and investigated the chemical composition of individual Ca-phosphate and pyroxene mineral using Point & shoot for the identification of the origins. As a result, we confirmed that the L1613 consists of mostly low-Ti-basalt with small amount of highland component. At the conference, the future-plan and/or progress of in-situ U-Pb analysis for Ca- phosphates also will be discussed.