Giant mantle plume reveals Mars is more active than previously thought

[Still Waters]

On Earth, shifting tectonic plates reshuffle the planet's surface and make for a dynamic interior, so the absence of such processes on Mars led many to think of it as a dead planet, where not much happened in the past 3 billion years.

In the current issue of Nature Astronomy, scientists from the University of Arizona challenge current views of Martian geodynamic evolution with a report on the discovery of an active mantle plume pushing the surface upward and causing earthquakes and volcanic eruptions. The finding suggests that the planet's deceptively quiet surface may hide a more tumultuous interior than previously thought.

https://phys.org/news/2022-12-giant-mantle-plume-reveals-mars.html

https://www.nature.com/articles/s41550-022-01836-3