Physics – Geophysics
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pggp.rept..365s&link_type=abstract
In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1986 p 365-367 (SEE N87-23341 16-91)
Physics
Geophysics
Geochronology, Magma, Mineralogy, Volcanoes, Arizona, Ashes, Basalt, Ejecta, Planetary Evolution
Scientific paper
Field mapping has produced a preliminary picture of Mohon Mountain as a composite volcano, in which pyroclastic ash and larger tephra erupted alternately with flows of rhyodacite and dacite. An analog study which uses imagery of lunar and Martian features will compare the overall shape of the vent complex, including its breached southern flank and satellite vents, to similar landforms found on Mars and the Moon which are believed to have formed similar processes. Ash flow sheets were hypothesized to comprise the outer slopes of Olympus Mons suggesting that explosive eruptions which are more volatile-rich than those which produce basalt flows are not confined to terrestrial settings but may also be found on bodies such as Mars, which have a thicker crust and deeper magma source in the mantle. The analog study will explore further evidence for explosive eruptions on Mars and the Moon.
King John S.
Simmons Ardyth M.
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