How are rampart craters formed?

Thanks for the A2A. Above, Martian rampart crater, classified as a multi-layered ejecta crater. Credit: NASA Rampart craters are, thus far, limited to Martian craters and, based on a recent paper, The Reis Impact Structure in Germany. read more

Above, Martian rampart crater, classified as a multi-layered ejecta crater. Credit: NASA. Rampart craters are, thus far, limited to Martian craters and, based on a recent paper, The Reis Impact Structure in Germany. read more

Rampart craters are a specific type of impact crater which are accompanied by distinctive fluidized ejecta features found mainly on Mars. There is one example known on Earth, the Nördlinger Ries impact structure in Germany. read more

An impact crater is an approximately circular depression in the surface of a planet, moon, or other solid body in the Solar System or elsewhere, formed by the hypervelocity impact of a smaller body. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. read more