Mathematics – Logic
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pggp.rept..239c&link_type=abstract
In NASA, Washington Repts. of Planetary Geol. and Geophys. Program p 239-241 (SEE N85-23474 13-91)
Mathematics
Logic
Geological Faults, Mars, Planetary Geology, Volcanoes, Ejecta, Ice, Liquefaction, Magma, Photogeology, Slurries
Scientific paper
Photogeologic studies of the Elysium volcanic province appear to provide a specific example of the importance of volcanic-ice interaction to produce the channels of Hrad and Granicus Valles. In addition, these studies shows that the channels lie on the surface of a large sedimentary deposit which is interpreted as an accumulation of volcanic debris flows or lahars. In spite of some similarities with Martian outflow channels, this latter difference may distinguish the Elysium channels from other types of Martian channels. Geologic relations are described which demonstrate that the debris flows formed amidst other volcanic activity in the Elysium region thereby suggesting that the magmatism was important to the generation of the mobilizing liquid. The lahars resulted from the melting of ground ice and liquefaction of subsurface materials. The intersection of this fluid reservoir with the regional fracture system lead to the rapid expulsion of a muddy slurry down the steep western slope of the province.
Christiansen Eric H.
Ryan Michael P.
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