Impact cratering: The process and its effects on planetary evolution

Details Impact cratering: The process and its effects on planetary evolution Impact cratering: The process and its effects on planetary evolution

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984bupr.rept.....g&link_type=abstract

Final Report, Feb. 1983 - Sep. 1984 Brown Univ., Providence, RI. Dept. of Geological Sciences.

Mathematics

Logic

Basalt, Calcite, Carbon Dioxide, Chemical Reactions, Cratering, Reaction Kinetics, Silicates, Venus (Planet), Weathering, Electron Microscopy, High Pressure, High Temperature, Planetary Evolution, Venera Satellites, Venus Surface, X Ray Diffraction

Scientific paper

The potential for silicate-carbon dioxide reactions as a geochemical weathering agent on Venus was studied. A tholetitic basalt close to the composition determined by the XRF experiment at the Venera 14 sites was subjected to high temperature and pressure (with pure CO2 as the pressure medium) for varying time durations. The starting basalt material and the run products were examined optically and by X-ray diffraction and electron microscopy. The kinetics of the silicate-carbonate reactions is discussed. A study to elucidate details of impact processes and to assess the effects of impact cratering on planetary evolution is mentioned.

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