Abstract
An analysis has been made of the tendency of large lunar craters to lie along circles. A catalog of the craters ⪰ 50 km in diameter was prepared first, noting position, diameter, rim sharpness and completion, nature of underlying surface, and geological age. The subset of those craters 50–400 km in diameter was then used as input to computer programs which identified each ‘family’ of four or more craters, of selected geological age, lying on a circular arc. For comparison, families were also identified for randomized crater models in which the crater spatial density was matched to that on the Moon, either overall or, separately, for mare and highland areas. The observed frequency of lunar arcuate families was statistically highly significantly greater than for the randomized models, for craters classified as either late pre-Imbrian (Nectarian), middle pre-Imbrian, or early pre-Imbrian, as well as for a number of larger age-classes. The lunar families tend to center in specific areas of the Moon: these lie in highlands rather than maria and are different for families of Nectarian craters than for pre-Nectarian. The origin of the arcuate crater groupings is not understood.
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Arthur, D. W. G., Agnieray, A. P., Horvath, R. A., Wood, C. A., and Chapman, C. R.: 1963,Comm. Lunar Planet. Lab. 2, 71, 1964,ibid 3, 1.
Arthur, D. W. G., Agnieray, A. P., Pellicori, R. H., Wood, C. A., and Weller, T.: 1965,ibid 4, 61.
Arthur, D. W. G., Pellicori, R. H., and Wood, C. A.: 1966,ibid 5, 1.
Bowker, D. E. and Hughes, J. K.: 1971,Lunar Orbiter Photographic Atlas of the Moon, SP-206, National Aeronautics and Space Administration, Washington, D.C.
Brennan, W. J.: 1976, inLunar Science VII, 94, Lunar Science Institute, Houston, Texas.
Fielder, G.: 1968,Planet. Space Sci. 16, 501.
Fielder, G.: 1971, inGeological Problems in Lunar and Planetary Research. Science and Technology 25, 393, American Astronautical Society, Tarzana, California.
Hibbs, A. R.: 1961,Planet. Space Sci. 8, 121.
Lipsky, Yo. N., Pskovsky, Yo. P., Gurshtein, A. A., Shevchenko, V. V., and Posnergelis, M. M.: 1966,Kosm. Issled. 4, 912.
Lunar Earthside Chart (LMP-1),Lunar Farside Chart (LMP-2),Lunar Polar Chart (LMP-3), Scale 1: 5000000: 2nd Ed. Oct. 1970, Aeronautical Chart and Information Center, U.S. Air Force, Washington, D.C.
Marcus, A. H.: 1966,Icarus 5, 190.
Oberbeck, F. R., Quaide, W. L., and Arvidson, R. E.: 1975,EOS 56, 1013.
Offield, T. W., and Pohn, H. A.: 1970,Crater Age Classification Used on Lunar Geologic Maps, distributed with maps of theGeologic Atlas of the Moon, U.S. Geological Survey, Washington, D.C.
Shemyakin, M. M.: 1969,Astronomicheskii Vestnik 3, (2), 65.
Shoemaker, E. M.: 1962, inPhysics and Astronomy of the Moon (ed. by Kopal, Z.), Academic Press, New York and London.
Wilhelms, D. E. and McCauley, J. F.: 1971,Geologic Atlas of the Moon, Geologic Map of the Near Side of the Moon, I-703, Scale 1: 5000000, U.S. Geological Survey, Washington, D.C.
Wilhelms, D. E.: 1976, inLunar Science VII 935, Lunar Science Institute, Houston, Texas.
Various authors: 1962-1975,Geologic Atlas of the Moon, Individual Quadrangle Maps, LAC series, Scale 1: 1000000, U.S. Geological Survey, Washington, D.C.
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Jaffe, L.D., Bulkley, E.O. Lunar crater arcs. The Moon 16, 71–114 (1976). https://doi.org/10.1007/BF00648048
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DOI: https://doi.org/10.1007/BF00648048