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Constraints on corona formation from an analysis of topographic rims and fracture annuli

Smrekar, Suzanne E.; Sabbeth, Leah; Carrington, Morgan A.

Coronae diameters defined by topographic rims, not fractures, are slightly larger. Most coronae have fracture annuli that overlap their topographic rims. Some corona models predict fractures interior to the topographic rims. There is little difference in the dimensions of rims with and without fractures. Fracture formation may be influenced by str…