Mathematics – Logic
Scientific paper
Mar 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..349f&link_type=abstract
Lunar and Planetary Science, volume 27, page 349
Mathematics
Logic
Lava Flows, Volcanism: Explosive, Volcanism: Mars
Scientific paper
The physical environmental conditions on Mars suggest that basaltic magmas containing even small amounts of typical volatile species should commonly have erupted explosively. Theoretical considerations indicate that enhanced volatile exsolution and expansion, together with the increased atmospheric trajectories of pyroclasts expected under martian conditions, should have promoted distribution of fine material over great distances. This implies that widespread pyroclastic deposits should be common in Mars' geologic record, but the identification of numerous lava flows and effusively constructed volcanic edifices indicates otherwise. Lava flows may have formed effusively on Mars if the magma reaching the surface of the planet was essentially devoid of volatiles; either as a result of depletion in the magma source region, or as a consequence of gas-loss during storage or transport. However, consideration of the details of the mechanisms of ascent and eruption of basaltic magmas under martian planetary conditions reveals that it may be possible for lava flows to form as a by-product of explosive volcanism in highly overpressured explosive eruptions.
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