Physics
Scientific paper
Nov 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3421204m&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 21, CiteID L21204
Physics
7
Planetary Sciences: Solar System Objects: Mars, Planetary Sciences: Solid Surface Planets: Impact Phenomena, Cratering (6022, 8136), Planetary Sciences: Solid Surface Planets: Interiors (8147)
Scientific paper
The improved resolution of recent global models of the gravity field of Mars enables an investigation of the crustal structure of large Martian impact basins. The results reveal that almost all basins between 275-1000 km in diameter show very shallow depths and limited crustal thinning for their size. We also show evidence that Martian basins once had lunar mascon-like gravity highs. We demonstrate that it is unlikely that surface processes alone are responsible for the current state of Martian basins and propose that viscous relaxation of relief by lower crustal flow was the dominant process in modifying Martian basins early in the planet's history. Viscoelastic modeling suggests that the current surface topography and crustal structure of these basins are consistent with this hypothesis. The heat flows required to produce relaxation (>47-55 mW m-2) are in good agreement with previous geophysical constraints on early Martian thermal evolution.
Mohit Pundit Surdas
Phillips Roger J.
No associations
LandOfFree
Viscous relaxation on early Mars: A study of ancient impact basins 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 Viscous relaxation on early Mars: A study of ancient impact basins, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Viscous relaxation on early Mars: A study of ancient impact basins will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-740609