V33B:
Formation of Earth and Its Chemical Reservoirs from High-Precision Isotope Measurements, Dynamical Modeling, Seismology, and Experimental Petrology II Posters

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Session ID#: 25510

Session Description:
Identification of Earth’s building blocks and the processes by which its interior evolved remain active areas of investigation. Decades of isotopic analyses, dynamical modelling, and experimental petrology have allowed for a multidisciplinary assessment of key events in Earth history. While recent analytical developments have led to high-precision isotope analyses that are revolutionizing the field, identifying Earth’s precursors and understanding how its poorly-mixed interior developed remain unclear. Related processes include main-stage accretion, the Moon-forming event, core segregation, mantle crystallization, late accretion, and crust formation. This session calls on studies that focus on deciphering Earth’s accretionary history and long-term crust-mantle evolution. In particular, research that integrates high-precision isotope ratio analyses (stable or radiogenic) of cosmo- or geo-chemical materials, with dynamical modelling, seismology, or experimental petrology.
Primary Convener:  Katherine R Bermingham, University of Maryland College Park, Department of Geology, College Park, United States
Convener:  Jesse Ray Reimink, Carnegie Institution for Science, DTM, Washington, DC, United States
Chairs:  Jesse Ray Reimink, Carnegie Institution for Science, DTM, Washington, DC, United States and Katherine R Bermingham, University of Maryland College Park, Department of Geology, College Park, United States
OSPA Liaison:  Katherine R Bermingham, University of Maryland College Park, Department of Geology, College Park, United States

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • P - Planetary Sciences
Index Terms:

1040 Radiogenic isotope geochemistry [GEOCHEMISTRY]
1041 Stable isotope geochemistry [GEOCHEMISTRY]
1060 Planetary geochemistry [GEOCHEMISTRY]
6240 Meteorites and tektites [PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS]

Abstracts Submitted to this Session:

On the origin of cratonic ‘high-mu’ isotopic signatures (221491)
Jesse Ray Reimink, Carnegie Institution for Science, DTM, Washington, DC, United States, Richard Carlson, Carnegie Inst Washington, Earth and Planets Laboratory, Washington, United States, Steven B Shirey, Carnegie Science, Earth and Planets Laboratory, Washington, United States, Graham Pearson, University of Alberta, Earth and Atmospheric Sciences, Edmonton, AB, Canada and Balz Samuel Kamber, Trinity College Dublin, Dublin, Ireland
High precision tungsten isotope analysis using MC-ICP-MS and application for terrestrial samples (234187)
Katsuhiko Suzuki, Japan Agency for Marine-Earth Science and Technology, Research Institute for Marine Resources Utilization, Kanagawa, Japan and Asako Takamasa, JAMSTEC Japan Agency for Marine-Earth Science and Technology, Submarine Resources Research Center, Kanagawa, Japan
A comparison using Faraday cups with 1013 Ω amplifiers and a secondary electron multiplier to measure Os isotopes by negative thermal ionization mass spectrometry (267291)
Gui-Qin Wang, GIG Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China and Ji-Feng Xu, Guilin University of Technology, Guilin, China; School of Earth Science and Resources, China University of Geosciences, Beijing, China
Mg-Fe Isotope Systems of Mantle Xenoliths: Constrains on the Evolution of Siberian Craton (274763)
Yajun An, Guangzhou, China, Ekaterina S. Kiseeva, University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, Nikolai V Sobolev, Inst Geology & Mineralogy, Novosibirsk, Russia and Zhaofeng Zhang, State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China

See more of: Volcanology, Geochemistry and Petrology