Publication Date:
2011-08-19
Description:
The development of models as tracers of nobel gases through the Earth's evolution is discussed. A new set of paradigms embodying present knowledge was developed. Several important areas for future research are: (1) measurement of the elemental and isotopic compositions of the five noble gases in a large number of terrestrial materials, thus better defining the composition and distribution of terrestrial noble gases; (2) determinations of relative diffusive behavior, chemical behavior, and the distribution between solid and melt of noble gases under mantle conditions are urgently needed; (3) disequilibrium behavior in the nebula needs investigation, and the behavior of plasmas and possible cryotrapping on cold nebular solids are considered.
Keywords:
LUNAR AND PLANETARY EXPLORATION
Type:
Lunar and Planetary Inst. Workshop on the Early Earth: The Interval from Accretion to the Older Archean; p 37-38
Format:
text
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