Explosive volcanic deposits on Mars: Preliminary investigations

Details Explosive volcanic deposits on Mars: Preliminary investigations Explosive volcanic deposits on Mars: Preliminary investigations

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pggp.rept..327c&link_type=abstract

In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1986 p 327-329 (SEE N87-23341 16-91)

Physics

Geophysics

Geomorphology, Mars Surface, Mars Volcanoes, Planetary Evolution, Thermal Mapping, Basalt, Chemical Analysis, Cones (Volcanoes), Effusives, Infrared Signatures, Photogeology, Volcanology

Scientific paper

Two investigations were undertaken to examine possible large scale explosive volcanic deposits on Mars. The first includes an analysis of Viking Infrared Thermal Mapper (IRTM) data covering the vast deposits in the Amazonis, Memnonia, and Aeolis regions. These postulated ignimbrites have been previously mapped, and at least five high resolution nighttime IRTM data tracks cross the deposits. Preliminary analysis of the data covering Amazonis Planitia show that local features have anomalous thermal inertias but the ignimbrites as a whole do not consistently have significantly different thermal inertias from their surroundings. Preliminary photogeologic and IRTM studies of the large and small highland paterae have also begun. The purpose of IRTM studies of postulated Martian explosive volcanic deposits is to determine the physical properties of the proposed ignimbrites. If volcanic deposits are exposed at the surface, high thermal inertias, as are observed for Apollinaris Patera, should be present.

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