Physics
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sci...320.1182p&link_type=abstract
Science, Volume 320, Issue 5880, pp. 1182- (2008).
Physics
74
Scientific paper
The Shallow Radar (SHARAD) on the Mars Reconnaissance Orbiter has imaged the internal stratigraphy of the north polar layered deposits of Mars. Radar reflections within the deposits reveal a laterally continuous deposition of layers, which typically consist of four packets of finely spaced reflectors separated by homogeneous interpacket regions of nearly pure ice. The packet/interpacket structure can be explained by approximately million-year periodicities in Mars’ obliquity or orbital eccentricity. The observed ~100-meter maximum deflection of the underlying substrate in response to the ice load implies that the present-day thickness of an equilibrium elastic lithosphere is greater than 300 kilometers. Alternatively, the response to the load may be in a transient state controlled by mantle viscosity. Both scenarios probably require that Mars has a subchondritic abundance of heat-producing elements.
Biccari Daniela
Campbell Bruce A.
Carter Lynn Marie
Cutigni Marco
Egan Anthony F.
No associations
LandOfFree
Mars North Polar Deposits: Stratigraphy, Age, and Geodynamical Response 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 Mars North Polar Deposits: Stratigraphy, Age, and Geodynamical Response, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mars North Polar Deposits: Stratigraphy, Age, and Geodynamical Response will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1077317