Several unusual crater chains have been found on Ganymede and Callisto that appear to be the impact scars of tidally disrupted comets or asteroids. These features serve to record the characteristics of comets and support the rubble-pile model for comet nuclei and some asteroids, in which these objects are formed of many small, loosely bound fragments.
A couple of crater chains have been found on Earth, including the Aorounga Craters (see Earth impact craters). A crater chain with a curved form is known as a crater arc.
Related categories• CRATERS
GEOLOGY AND PLANETARY SCIENCE
METEORS AND METEORITES
Home • About • Copyright © The Worlds of David Darling • Encyclopedia of Alternative Energy • Contact