Geology of Venera 8 landing site region from Magellan data - Morphological and geochemical considerations

Details Geology of Venera 8 landing site region from Magellan data - Morphological and geochemical considerations Geology of Venera 8 landing site region from Magellan data - Morphological and geochemical considerations

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....9716315b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. E10, p. 16,315-16,335.

Mathematics

Logic

30

Geochemistry, Geomorphology, Landing Sites, Magellan Project (Nasa), Planetary Geology, Venera 8 Satellite, Venus Surface, Petrology, Photogeology, Planetary Crusts, Radar Imagery

Scientific paper

Morphological and geochemical aspects of the geology of the Venera 8 landing site region are examined on the basis of two approaches: an analysis of Magellan data for the Venera/Vega sites where chemical composition of the surface material was determined, and continuation of the search for terrestrial igneous rocks which are the K2O-U-Th analogs of the Venera 8 material. Based on the first approach, it is determined that steep-sided volcanic domes are associated with the sites where a nontholeiitic composition of the surface material was determined. In the second approach, it is discovered that the chemical analogs of the Venera 8 material are not confined to more evolved igneous rocks but may also include a group of more mafic, rather primitive rocks. A common feature of the rocks in these two groups is chemical signatures of some involvement of the material of the earth's continental crust in their magma genesis.

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