Mathematics – Logic
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18.2121h&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 18, Nov. 1991, p. 2121-2124.
Mathematics
Logic
15
Calderas, Lunar Mantle, Magma, Volcanoes, Bedrock, Lunar Geology, Lunar Maria, Transport Theory, Volcanology
Scientific paper
A theoretical study of the observed topographical conditions on the moon is presented emphasizing the absence of large calderalike structures and shield volcanoes. An examination of the crustal structure and magma ascent on the moon shows that melt ascending from the mantle slows or stops at rheological traps or below the lunar crust. Such a scenario is theorized to lead to infrequent large-scale eruptions initiated at dikes from the magma reservoirs to the surface. A more plausible theory is that the magma forms rilles, long flows, and widespread flow units; shallow neutral buoyancy zones and magma reservoirs are not likely to occur on the moon. The argument is found to be consistent with the absence of large shield volcanoes and calderas on the moon, and references are given supporting topographical evidence.
Head James W. III
Wilson Lionel
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