High pressure phase relationships of the Fe-Ni-C system and its implications to the lunar core structure

Shumpachi KISHIMOTO; Satoru URAKAWA

Presentation information

Oral

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

[P-PS23] Lunar science and exploration

Tue. May 26, 2015 9:00 AM - 10:45 AM A02 (APA HOTEL&RESORT TOKYO BAY MAKUHARI)

Convener:*Hiroshi Nagaoka(Waseda Univ.), Tomokatsu Morota(Graduate School of Environmental Studies, Nagoya University), Masaki N Nishino(Solar-Terrestrial Environment Laboratory, Nagoya University), Chikatoshi Honda(The University of Aizu), Yuichiro Cho(Department of Physics, Rikkyo University), Chair:Makiko Ohtake(宇宙航空研究開発機構宇宙科学研究本部固体惑星科学研究系), Yoshiko Ogawa(The University of Aizu)

9:45 AM - 10:00 AM

[PPS23-16] High pressure phase relationships of the Fe-Ni-C system and its implications to the lunar core structure

*Shumpachi KISHIMOTO¹, Satoru URAKAWA¹ (1.Graduate schol of natural science and technology, Okayama University)

Keywords:high pressure, lunar core, Fe-Ni-C system, phase relationships

We investigate the phase relationships of the Fe-Ni-C systems at 5 GPa equivalent to the lunar core condition using multi anvil high pressure apparatus. We determined the precise melting relationships of the Fe-Ni-C system at 5 GPa. We also elucidate the stability field of (Fe,Ni)₃C and (Fe,Ni)₇C₃ carbide phase. In the meeting we will discuss the composition and the structure of the lunar core using the present data based on the seismic model of Weber et al. (2011).