Mathematics – Logic
Scientific paper
Aug 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981icar...47..184m&link_type=abstract
Icarus, vol. 47, Aug. 1981, p. 184-202.
Mathematics
Logic
15
Impact Damage, Mercury (Planet), Meteorite Craters, Stratigraphy, Structural Basins, Structural Properties (Geology), Ejecta, Mariner 10 Space Probe, Meteoritic Damage, Planetology, Spaceborne Photography, Features, Nervo Formation, Odin Formation, Rook Formation, Morphology, Caloris Montes Formation, Gravity Effects, Mountains, Impacts, Caloris Basin, Stratigraphy, Imhotep, Ejecta, Nomenclature, Chronology, Geologic Formations, Comparisons, Moon, Orientale Basin, Basins, Mercury, Photographs, Imbrium Basin
Scientific paper
A formal rock stratigraphic nomenclature in proposed for the ejecta units of the 1300-km diameter Caloris impact basin of Mercury. The ejecta units can be recognized for more than 1000 km radially outward from the basin edge, and are collectively called the Caloris Group. The formations recognized within the Caloris Group include: (1) the Caloris Montes; (2) the Nervo; (3) the Odin; and (4) two Van Eyck Formations, one with lineated facies and the other with secondary crater facies. It is shown that of the craters in the 30-100-km size range superposed on the Caloris ejecta assemblage, most are of the c(4) and c(5) type. The youngest craters are assigned the highest subscript numbers. If other basins and craters can be tied into the Caloris basin over the rest of Mercury using data from Mariner 10, the stratigraphy described may help establish a time stratigraphy consisting of formal systems and periods in the history of Mercury.
Greeley Ronald
Guest John E.
McCauley John F.
Schaber Gerald G.
Trask Newell J.
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