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Research output: Contribution to conference - Without ISBN/ISSN › Conference paper
Research output: Contribution to conference - Without ISBN/ISSN › Conference paper
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TY - CONF
T1 - Muddy CO2-driven brine fountains at Mangala Valles, Mars
AU - Neather, Adam
AU - Wilson, Lionel
AU - Lane, Stephen
PY - 2009
Y1 - 2009
N2 - Mangala Valles is one of many sites on Mars probably formed by massive catastrophic releaseof water onto the surface [1-3]. The water was released after a dike intruded into the area from the near-by Tharsis region, causing formation of a graben, Mangala Fossa [4]. Water was forced to the surface up the graben boundary faults by topographic pressuregradients and buoyancy.Proximal to the eastern arm of the Mangala Fossa graben two types of deposit are present. (Figure 1). The dune-like features that are found at the far eastern end of the graben (C) are proposed to be of phreatomagmatic origin [5]. We suggest that the other type of deposit, seen along the strike of the eastern arm (A and B), are mud deposits, ejected by CO2-driven water fountains. The mechanism is similar to that seen in the Lake Nyos and Monoun (both in Cameroon) degassing events [6].
AB - Mangala Valles is one of many sites on Mars probably formed by massive catastrophic releaseof water onto the surface [1-3]. The water was released after a dike intruded into the area from the near-by Tharsis region, causing formation of a graben, Mangala Fossa [4]. Water was forced to the surface up the graben boundary faults by topographic pressuregradients and buoyancy.Proximal to the eastern arm of the Mangala Fossa graben two types of deposit are present. (Figure 1). The dune-like features that are found at the far eastern end of the graben (C) are proposed to be of phreatomagmatic origin [5]. We suggest that the other type of deposit, seen along the strike of the eastern arm (A and B), are mud deposits, ejected by CO2-driven water fountains. The mechanism is similar to that seen in the Lake Nyos and Monoun (both in Cameroon) degassing events [6].
M3 - Conference paper
T2 - 40th Lunar and Planetary Science Conference
Y2 - 23 March 2009 through 27 March 2009
ER -