The youngest surfaces indicate volcanism, weathering, gullying, exhumation, and modest water release all operating within the last few 100~Myr, with the youngest detected flows at less than 10 Myr ago. Neither Earth nor Moon offers such a complete geological record. This picture is consistent with radiometric age data of Martian meteorites which indicate that Mars has not only ancient crustal material, as represented in the ALH84001 meteorite, but at least some geologically young igneous rocks with ages of a few 100 Myr. Remote sensing of the Martian surface identifies two broad groups of igneous rock units, basaltic and andesitic, as is confirmed by in-situ chemical analyses at the Pathfinder landing site. Based on these results, the book contains an update on the overall stratigraphic system and geologic processes of the Martian surface, and a recent review on the newest models of the Martian interior structure and on the knowledge about the history of the Martian atmosphere and hydrosphere.
![Chronology and Evolution of Mars Chronology and Evolution of Mars](https://www.angusrobertson.com.au/images/9789048157259.jpg?width=250)
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