Geologic Mapping of Venus and Mars

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Geologic Mapping of Venus and Mars

• Leslie F. Bleamaster III
• San Antonio, TX

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Helen Planitia and Isabella Quadrangle, Venus
(PGG) L. Bleamaster, D. Crown, E. Stofan, I.
Lopez
eastern hemisphere
Overarching theme Constrain the geologic/
thermal history of a particularly young region
of Venus, and place it into global context.
Helen Planitia, 1/8 of the planet
Specific Studies Helen- Map the distribution of
medium to large sized volcano-tectonic centers
Everywhere- Investigate relationship between
craters with outflows and volcanic centers
Isabella Crater inverted SAR
Isabella Quadrangle (V50) synthetic aperture
radar (SAR)
Isabella- Understand the relationship between
contractional deformation and small-scale
volcanism
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Mawrth Vallis and Nili Fossae Mars (PGG) L.
Bleamaster, D. Crown, J. Mustard
Note both are MSL candidate landing sites!!!

• Science tasks
• geologic mapping, geomorphic analyses, and
  chronologic studies
• characterization of the role and extent of
  volatile-driven, aeolian, volcanic, and tectonic
  modification and degradation processes on Mawrth
  Vallis, Nili Fossae, and Arabia Terra
• evaluation of the distribution, stratigraphic
  position, and lateral continuity of
  compositionally distinct outcrops as seen in
  spectral datasets (specifically phyllosilicates)

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