Geomorphology and stratigraphy of Alba Patera, Mars

Details Geomorphology and stratigraphy of Alba Patera, Mars Geomorphology and stratigraphy of Alba Patera, Mars

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....96.1907s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Feb. 10, 1991, p. 1907-1930.

Mathematics

Logic

21

Geomorphology, Mars Surface, Mars Volcanoes, Stratigraphy, Satellite Imagery, Viking Spacecraft, Mars, Morphology, Stratigraphy, Alba Patera, Volcanism, Lava, Rheology, Eruptions, Lava Flow, History, Flooding, Emplacement, Pyroclastics, Procedure, Calderas, Volcanoes, Grabens, Fissures, Description, Age, Vents, Terrain, Surface, Features, Ceraunius Fossae, Craters, Distribution

Scientific paper

Geomorphic and stratigraphic analysis of Alba Patera suggests a volcanic construct built by lavas with rheologic properties similar to basalts. A series of evolving eruptive styles is suggested by changes in morphology and inferred progressive reductions in flow volume with higher stratigraphic position. Alba Patera's volcanic history has been summarized into four main phases. The first is characterized by extensive flood like flows presumably erupted from fissures associated with the initial intrusion of magma into the region. The second phase is associated with the emplacement of pyroclastic rock, a more speculative interpretation. The third phase produced the voluminous tabular, crested, and undifferentiated flows, probably from a more centralized vent source. The fourth and last phase is marked the effusion of levee like flows and the collapse of the summit calderas and final graben formation.

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