Polygenic eruptions on Alba Patera, Mars

Journal Article · Fri Jan 01 00:00:00 EST 1988 · Bulletin of Volcanology; (USA)

DOI:https://doi.org/10.1007/BF01050636· OSTI ID:5594413

Mouginis-Mark, P J; Wilson, L; Zimbelman, J R ^[1]

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1. Hawaii Univ., Honolulu (USA)

A new model for the evolution of the martian volcano Alba Patera is constructed. Numerous digitate channel networks on the flanks of the volcano are interpreted to be carved by sapping due to the release of nonjuvenile water from unconsolidated flank deposits. The particle size of these deposits is estimated to be 3-10 microns, which, together with theoretical modelling of the disperison of explosively derived volcanic materials, leads to the conclusion that the flank deposits on Alba Patera are low-relief pyroclastic flows. The recognition of numerous late-stage summit and subterminal lava flows thus makes Alba Patera a unique martian volcano that is transitional between the older pyroclastic-dominated highland paterae and the more recent effusive central-vent volcanoes such as the Tharsis Montes. 61 refs.

• OSTI ID: 5594413
• Journal Information: Bulletin of Volcanology; (USA), Vol. 50; ISSN 0258-8988
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
MARS PLANET
VOLCANOES
AGE ESTIMATION
GEOLOGY
LAVA
PARTICLE SIZE
PLANETARY EVOLUTION
VIKING SPACE PROBES
PLANETS
SIZE
SOLAR SYSTEM EVOLUTION
SPACE VEHICLES
VEHICLES
640107* - Astrophysics & Cosmology- Planetary Phenomena