Solid Earth Sciences (S)
Session Sub-category Science of the Earth's Interior & Tectonophysics(IT)
Session ID S-IT21
Title Understanding the first 150 million years of the solar system
Short Title Solar system beginnings
Main Convener Name Yuki Hibiya
Affiliation Research Center for Advanced Science and Technology, The University of Tokyo
Co-Convener 1 Name Hiroko Watanabe
Affiliation Research Center for Neutrino Science, Tohoku University
Co-Convener 2 Name William F McDonough
Affiliation Department of Earth Science and Research Center for Neutrino Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
Session Language
E
Scope
The first 150 million years of solar system history witnessed the formation of the rocky and gas giant planets, the Earth's Moon, and the asteroid belt. We seek to define the absolute and relative timing of these events, particularly in the inner solar system in order to explore hypotheses for their nature, origins, and timing of events at 10^6 to 10^8 time scales. For example, iron meteorites ages span from CAI formation to Mars formation, whereas chondrites ages postdate most early, small planetesimal formation and differentiation. Rocky planets likely grew rapidly by accretion of differentiated planetesimals (e.g., iron meteorite parent bodies) heated by 26Al. In contrast, chondritic parent bodies that accreted post-26Al lifetime remained undifferentiated. Mars and the Earth are equally enriched in refractory elements at 1.9 times CI chondrite, Mars is less volatile-depleted and more oxidized, and both formed Hadean crusts in the presence of surface water (cf., the Moon). We welcome contributions providing insights from physics and chemistry to the mechanisms forming and influencing these processes.
Presentation Format Oral and Poster presentation
Invited Authors Shota Notsu (Earth and Planetary System Science Group, Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)
Tomoya Obase (Institute of Science Tokyo)
Shogo Tachibana (UTokyo Organization for Planetary and Space Science, University of Tokyo )
Junji Yamamoto (Kyushu University)
Time Presentation No Title Presenter
Oral Presentation May 27 AM2
10:45 - 11:00 SIT21-01 Planet formation and astrochemistry in protoplanetary disks through theoretical modeling and astronomical observations with ALMA Shota Notsu
11:00 - 11:15 SIT21-02 Energetic solar activity from the first million years to present: Insights from noble gases in planetary materials Tomoya Obase
11:15 - 11:30 SIT21-03 Chemical Evolution of the Sun's Protoplanetary Disk: Constraints from Extraterrestrial Materials Shogo Tachibana
11:30 - 11:45 SIT21-04 Potential source materials of terrestrial noble gases inferred from mantle noble gas isotopic compositions Junji Yamamoto
11:45 - 12:00 SIT21-05 Theoretical Insights into Earth's Heat from Geoneutrino Detection by Ocean Bottom Detector: Role of Angular Resolution Zhihao Xu
12:00 - 12:15 SIT21-06 Composition, origin, and evolution of the Earth and its energy budget William F McDonough
Presentation No Title Presenter
Poster Presentation May 27 PM3
SIT21-P01 Development of Ocean Bottom Detector for Direct Measurement of Mantle Geoneutrinos: Simulation studies and Prototype Development Simran Chauhan
SIT21-P02 From planetesimals to planetary embryos: clues from differentiation of enstatite chondritic body WEI DU
SIT21-P03 The late thermal events of carbonaceous chondrites revealed by I-Xe dating and halogen analyses Yuki Hibiya
SIT21-P04 Deciphering solar system formation by linking the heterogeneity of short-lived and stable isotopes Yuki Hibiya