2016年6月3日に、愛媛大学地球深部ダイナミクス研究センター（GRC)において、Colin Jackson博士（カーネギー研究所）による国際フロンティアセミナーを行いました。

GRC & MEXT Shin-Gakujutsu “Core-Mantle Coevolution”
International Frontier Seminar　Poster

Date & Time: 2016/6/3 (Fri) 4:30 p.m. – 6:30 p.m.
Venue: 4F Meeting Room, Science Research Bldg 1, Ehime University
（愛大理学部総合研究棟I 4F共通会議室）
Speaker: Dr. Colin Jackson, Geophysical Laboratory, Carnegie Institute for Science
Title: Atmosphere-mantle interactions using noble gases
Abstract:The noble gas composition of the depleted mantle is a mixture of three components: a radiogenic component, produced by the decay of noble gas parent nuclides, a primordial component, introduced during Earth’s accretion, and an atmospheric component, associated with the subduction of hydrothermally altered slab materials. This talk seeks to understand 1) the contribution of recycled oceanic crust to the atmospheric component of mantle noble gases and 2) the relative proportions of atmospheric and primordial components in the mantle noble gas budget. I will specifically examine the behavior of Ne during subduction. This examination allows further insight into how the thermal state of the slab affects the composition of noble gases recycled into the mantle and the ultimate source for primordial volatiles in our planet.