The formation of antipodal-impact terrains on Mars

Details The formation of antipodal-impact terrains on Mars The formation of antipodal-impact terrains on Mars

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pggp.rept...59w&link_type=abstract

In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1990 p 59-60 (SEE N92-10728 01-91)

Physics

Geophysics

Mars Craters, Mars Surface, Mars Volcanoes, Planetary Crusts, Planetary Geology, Seismology, Calderas, Computer Programs, Computerized Simulation, Fracturing, Lava, Magma, Photogeology, Planetary Composition, Planetary Evolution, Structural Basins, Terrain

Scientific paper

The regions antipodal to Mars' three largest impact basins, Hellas, Isidis, and Argyre, were assessed for evidence of impact induced seismically disrupted terrains. Photogeology and preliminary computer modeling using the Simplified Arbitrary Lagrangian-Eulerian computer program suggest such terrain could have been formed by the Hellas and Isidis impacts. Previously, the only assessment of potential surface disruptions on Mars antipodal to large impacts was by Peterson (1978). Herein, the results give credence to Peterson's assertions. For Hellas, the computer model clearly suggests that antipodal pressures were probably strong enough to have fractured the crust and disrupted the surface, and may account for aspects of volcanism at Alba Patera. It is suggested that the Hellas impact produced sufficient focused energy at its antipode to produce deep fracture in the Martian crust centered below the current caldera for Alba Petera. With the generation and evolution of magma in the Tharsis area, the fracture system provided a ready conduit for early stage eruptions of Martians lavas derived from deep in the crust and/or upper mantle, perhaps of komatiitic composition.

Affiliated with

Also associated with

No associations

Rating

The formation 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 The formation of antipodal-impact terrains on Mars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The formation of antipodal-impact terrains on Mars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1286304