Mathematics – Logic
Scientific paper
May 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22.1269s&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 22, no. 10, p. 1269-1272
Mathematics
Logic
2
Geomorphology, Mars Surface, Photogeology, Planetary Craters, Planetary Geology, Planetary Mantles, Structural Basins, Topography, Effusives, Escarpments, Highlands, Photomaps, Radar Imagery
Scientific paper
We propose a new center and ring assignment for the original Chryse impact basin based upon photogeologic mapping of Noachian outcrops and re-examination of the published geology using orthographic projections. While others have centered the Chryse impact on the topographic low associated with Hesperian volcanic and fluvial deposits, we suggest that the center of the Noachian-age excavation cavity was located approximately 800 km to the north, and that the basin topography was modified significantly from the Noachian into the Hesperian. Evolution of the topographic low included structural modification by a later impact centered in Acidalia, restricted volcanic deposition and loading, localized subsidence, and restricted deposition from the circum-Chryse outlfow channels.
Frey Harald
Stockman S. A.
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