Mars:A review and synthesis of general environments and geological settings of magma-H 2O interactions

Head, James W. and Wilson, Lionel (2002) Mars:A review and synthesis of general environments and geological settings of magma-H 2O interactions. Geological Society Special Publication, 202. pp. 27-57. ISSN 0305-8719

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Abstract

The advent of a global cryosphere likely occurred very early in the history of Mars, and much of the available water and related volatiles (CO 2, clathrates, etc.) were sequestered within and below the cryosphere. This means that magmatism (plutonism and volcanism) as a geological process throughout the history of Mars cannot be fully understood without accounting for the interaction of magma and water (and related species) in both solid and liquid form. We review and outline the probable configuration of water and ice deposits in the history of Mars, describe environments and modes of magma-H 2O interaction, and provide specific examples from the geological record of Mars. Magma and water-ice interactions have been interpreted to have formed: (1) massive pyroclastic deposits; (2) large-scale ground collapse and chaotic terrain; (3) major outflow channels; (4) mega-lahars dwarfing terrestrial examples; (5) sub-ice-sheet eruptions and edifices; (6) pseudocraters; (7) landslides on volcanic edifice flanks; and (8) hydrothermal sites. The global nature of the cryosphere, its longevity, and the diversity of environments means that Mars is an excellent laboratory for the study of magma-H 2O interactions and the role of related volatile species.

Item Type:
Journal Article
Journal or Publication Title:
Geological Society Special Publication
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2212
Subjects:
ID Code:
134657
Deposited By:
Deposited On:
22 Jun 2019 09:16
Refereed?:
Yes
Published?:
Published
Last Modified:
03 Mar 2020 05:16