Oskison (crater)
Encyclopedia
The crater Oskison is located in the far northern hemisphere of Mercury, in the plains north of Caloris basin
Caloris Basin
The Caloris Basin, also called Caloris Planitia, is a large impact crater on Mercury about in diameter, one of the largest impact basins in the solar system. Caloris is Latin for heat and the basin is so-named because the Sun is almost directly overhead every second time Mercury passes perihelion...

. Oskison is a distinctive crater with a large central peak that exposes material excavated from depth. Many chains of secondary crater
Secondary crater
Secondary craters are impact craters formed by the ejecta that was thrown out of a larger crater. They sometimes form radial crater chains.-External links:*...

s are visible radiating from Oskison outward onto the surrounding smooth plains.
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