Lancaster EPrints

Muddy CO2-driven brine fountains at Mangala Valles, Mars

Neather, Adam and Wilson, Lionel and Lane, Stephen (2009) Muddy CO2-driven brine fountains at Mangala Valles, Mars. In: 40th Lunar and Planetary Science Conference, 2009-03-232009-03-27, Woodlands, Texas.

[img]
Preview
PDF (MUDDY CO2-DRIVEN BRINE FOUNTAINS AT MANGALA VALLES, MARS.) - Published Version
Download (677Kb) | Preview

    Abstract

    Mangala Valles is one of many sites on Mars probably formed by massive catastrophic release of 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 pressure gradients 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].

    Item Type: Conference or Workshop Item (Paper)
    Journal or Publication Title: 40th Lunar and Planetary Science Conference
    Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
    Departments: Faculty of Science and Technology > Lancaster Environment Centre
    ID Code: 53235
    Deposited By: ep_importer_pure
    Deposited On: 20 Mar 2012 09:59
    Refereed?: No
    Published?: Published
    Last Modified: 10 Apr 2014 02:51
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/53235

    Actions (login required)

    View Item