Mathematics – Logic
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pggp.rept..347f&link_type=abstract
In NASA, Washington Repts. of Planetary Geol. and Geophys. Program, 1984 p 347-349 (SEE N85-23474 13-91)
Mathematics
Logic
Highlands, Mars Surface, Planetary Geology, Planetary Mapping, Topography, Boundaries, Plateaus, Terrain
Scientific paper
In an effort to shed some light on the processes which have produced the highlands/lowlands boundary scrap on Mars, the global distributions of knobby terrain, detached and separated blocks and mesas, and craters larger than 10 km diameter were mapped. These data were represented as fractional areal percentages of the sample box, which is 2.5 deg high (latitude) along north-south profiles every 5 deg in longitude. The fractional area of crater interiors provides a way of quantitatively characterizing the boundary between cratered highlands and relatively uncratered plains. In the vicinity of the nomimal scarp there is generally good agreement between the dropoff in fractional area of craters and a drop-off in topography. Contoured versions of the fractional area of crater interiors, even at the low resolution imposed by the sample box, show good agreement with the geologic mapping. The most northerly occurrence of detached plateaus and knobby terrain were located in order to test the plausibility of the hypothesis that much of the present day highland boundary scrap is due to southward migration of a former boundary.
Frey Harald
Semeniuk Ann Marie
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