Baltisk is a crater in the Argyre quadrangle of Mars. It was named after a town in Russia in 1976. Baltisk is located on the western edge of the Argyre impact basin.Moore, P. et al. 1990. The Atlas of the Solar System. Crescent Books. NY
Impact craters generally have a rim with ejecta around them, in contrast volcanic craters usually do not have a rim or ejecta deposits. As craters get larger (greater than 10 km in diameter) they usually have a central peak. The peak is caused by a rebound of the crater floor following the impact.
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