The evolution of the earth's atmosphere and oceans

Details The evolution of the earth's atmosphere and oceans The evolution of the earth's atmosphere and oceans

May 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982georl...9..579m&link_type=abstract

Geophysical Research Letters, vol. 9, May 1982, p. 579-582.

Physics

3

Atmospheric Models, Earth Atmosphere, Earth Hydrosphere, Ocean Models, Planetary Evolution, Argon Isotopes, Carbon Dioxide, Cosmology, Diamonds, Earth Mantle, Isotope Effect, Mathematical Models, Nitrogen, Occlusion, Outgassing, Water

Scientific paper

An atmospheric- and hydrospheric-evolution model has been developed which incorporates as its experimental parameters the abundance of mantle fluid occluded in Arkansas diamonds, the 3.1-billion year age of crystallization for those diamonds, the 100-400 km depth range for diamond formation, and the 4.67-billion year age of the earth. The data for all occluded fluids except H2O and CO2 are interpreted in terms of a first-order mechanism for earth degassing. Evidence shows that CO2 and H2O exist in two phases in the low-seismic velocity region of the upper mantle, which if true will require a transformation of the first-order rate laws to a zero-order rate law for these fluids. Good agreement is obtained between the calculated and experimental abundance of all fluids in the atmosphere and hydrosphere.

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