An impact crater having a polygonal rim shape in plan view.
A polygonal crater is an impact crater which in plan view is not circular, elliptical, or irregular, but more closely resembles a regular polygon with straight rim segments and clearly discernible angles between them. Typically only a part of the rim circumference is formed by straight segments. However, no rigorous definition of a polygonal crater exists.
KeywordsImpact Crater Crater Formation Explosion Crater Wrinkle Ridge Shear Stress Direction
- Elger TG (1895) The moon – a full description and map of its principal physical features. George Philip & Son, LondonGoogle Scholar
- Kopal Z (1966) An introduction to the study of the moon. D. Reidel Publishing, DordrechtGoogle Scholar
- Kumar PS, Kring DA (2008) Impact fracturing and structural modification of sedimentary rocks at Meteor Crater, Arizona. J Geophys Res Planets 113:E09009. doi:10.1029/2008JE003115Google Scholar
- Öhman T (2009) The structural control of polygonal impact craters. Res Terrae, Ser. A, No. 28, Dissertation, University of Oulu, FinlandGoogle Scholar
- Poelchau MH, Kenkmann T, Kring DA (2009) Rim uplift and crater shape in Meteor crater: the effects of target heterogeneities and trajectory obliquity. J Geophys Res 114, E01006. doi:10.1029/2008JE003235Google Scholar
- Pohn HA, Offield TW (1970) Lunar crater morphology and relative-age determination of lunar geologic units – part 1. Classification. Geological Survey Research 1970, U.S. Geological Survey professional paper 700-C, pp C153–C162Google Scholar
- Roddy DJ, Davis LK (1977) Shatter cones formed in large-scale experimental explosion craters. In: Roddy DJ, Pepin RO, Merril RB (eds) Impact and explosion cratering. Pergamon Press, New York, pp 715–750Google Scholar
- Weihs GT, Leitner JJ, Firneis MG (2012) Comparison of polygonal impact craters on Mercury and other terrestrial planets. Paper presented at EGU General Assembly, Vienna, 22–27 Apr 2012, 14, EGU2012-3729, 2012Google Scholar