Physics
Scientific paper
May 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pepi...32..132j&link_type=abstract
Physics of the Earth and Planetary Interiors (ISSN 0031-9201), vol. 32, May 1983, p. 132-145. Research sponsored by the Deutsche
Physics
17
Gravity Anomalies, Mars Surface, Planetary Crusts, Planetary Mantles, Line Of Sight, Lithosphere, Planetary Geology, Topography, Viking Orbiter 2, Mars, Isostacy, Elysium Region, Gravity Effects, Model, Anomalies, Density, Compensation, Topography, Mass, Crusts, Thickness, Ages, Lithosphere, Photogeology, Hypotheses
Scientific paper
Gravity anomalies from density models have been fitted to line-of-sight (LOS) gravity data for the Elysium dome on Mars. Various degrees of compensation have been investigated, under the assumption of either Airy or a modified Pratt compensation. The models yield compensations of the topographic mass between 89.1 and 100 percent. The results imply upper and lower limits for the mean crustal thickness of 30 and 120 km. The lower limit for the lithospheric thickness is 150 km, as derived from Pratt models. A synopsis of photogeological results and age determinations from crater statistics, and the preference for Airy compensation, i.e., crustal thickening, in the dome area, lead to the hypothesis of a micro-continent in relation to the Elysium dome.
Janle Peteh
Ropers J.
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