Computer Science
Scientific paper
Aug 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994icar..110..196w&link_type=abstract
Icarus (ISSN 0019-1035), vol. 110, no. 2, p. 196-202
Computer Science
6
Antipodes, Mars Craters, Mars Surface, Mars Volcanoes, Terrain Analysis, Computerized Simulation, Data Reduction, Finite Element Method, Impact Damage, Impact Loads, Seismic Waves
Scientific paper
The regions anitpodal to Mars' three largest impact basins, Hellas, Isidis, and Argyre, were assessed for evidence of impact-induced disrupted terrains. Photogeology and computer modeling using the Simplified Arbitrary Lagrangian Eulerian (SALE) finite element code suggest that such terrains could have been found by the Hellas impact. Maximum antipodal pressures are 1100 MPa for Hellas, 520 MPa for Isidis, and 150 MPa for Argyre. The results suggest that if antipodal fracturing were associated with later volcanism, then Alba Patera may be related to the Hellas event, as proposed by Peterson (1978). Alba Patera is a unique volcano in the solar system, being a shield volcano which emitted large volume lava flows. This volcanism could be the result of the focusing of seismic energy which created a fractured region that served as a volcanic conduit for the future release of large volumes of magma. No disrupted terrain features are observed antipodal to the Isidis or Argyre basins, although some of the old fractures in Noctis Labyrinthus could have originated in response to the Isidis impact, and later have been reactivated by the Tharsis tectonics assumed to have produced Noctis. If the lower calculated antipodal pressures for Argyre were capable of producing disrupted terrains, then the terrains have been covered subsequently by volcanic or aeolian material, or modified beyond recognition.
Greeley Ronald
Williams David. A.
No associations
LandOfFree
Assessment of antipodal-impact terrains on Mars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Assessment of antipodal-impact terrains on Mars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Assessment of antipodal-impact terrains on Mars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1497176