| Solid Earth Sciences(S) |
|---|
| Session Sub-category | Science of the Earth's Interior & Tectonophysics |
| Session ID | S-IT25 |
| Title | Deep Carbon: Diamond formation and carbon speciation in Earth and planetary processes |
| Short Title | Deep Carbon |
| Main Convener | Name | Eiji Ohtani |
| Affiliation | Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University |
| Co-Convener 1 | Name | Konstantin Litasov |
| Affiliation | V.S. Sobolev Institute of Geology and Mineralogy SB RAS |
| Co-Convener 2 | Name | Hiroyuki Kagi |
| Affiliation | Geochemical Research Center, Graduate School of Science, University of Tokyo |
| Co-Convener 3 | Name | Craig E Manning |
| Affiliation | University of California Los Angeles |
| Session Language | EE |
| Scope | Diamonds are observed in various localities including terrestrial and extraterrestrial environments. However, there are several reports on the diamond localities from non-traditional sources including ultra-deep seated diamonds, ultrahigh pressure metamorphic rocks, various magmas, some meteorites and terrestrial craters. These diamonds might be formed by shock events, crystallization from fluids, magmas, or metallic melts, and CVD process. In this session, we welcome papers on occurrence and origin of diamonds from traditional and non-traditional sources in earth and meteorites. We also encourage the experimental studies on diamond genesis, speciation of carbon bearing compounds in terrestrial rocks and meteorites. We welcome papers on formation mechanisms of diamond in natural metal-carbon systems, chromatographic study of deep seated and experimental fluids. We also welcome papers dealing with behavior of organic materials at high pressure and high temperature corresponding to the deep earth and planets. In some chromitites, various enigmatic high pressure phases have been reported as inclusions together with diamond. We also encourage the presentations on descriptions and discussions on the origin of these materials. |
| Presentation Format | Oral and Poster presentation |
| Joint Session with | AGU |
| Invited Authors | - Richard Wirth (Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences Section 4.4)
- Hiroaki Ohfuji (Geodynamics Research Center, Ehime University)
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