Ground penetrating radar observations of subsurface structures in the floor of Jezero crater, Mars

The Radar Imager for Mars Subsurface Experiment instrument has conducted the first rover-mounted groundpenetrating radar survey of the Martian subsurface. A continuous radar image acquired over the Perseverance rover's initial similar to 3-kilometer traverse reveals electromagnetic properties and bedrock stratigraphy of the Jezero crater floor to depths of similar to 15 meters below the surface. The radar image reveals the presence of ubiquitous strongly reflecting layered sequences that dip downward at angles of up to 15 degrees from horizontal in directions normal to the curvilinear boundary of and away from the exposed section of the Seitah formation. The observed slopes, thicknesses, and internal morphology of the inclined stratigraphic sections can be interpreted either as magmatic layering formed in a differentiated igneous body or as sedimentary layering commonly formed in aqueous environments on Earth. The discovery of buried structures on the Jezero crater floor is potentially compatible with a history of igneous activity and a history of multiple aqueous episodes.

Automated summary

The Radar Imager for Mars Subsurface Experiment has conducted the first rover-mounted ground-penetrating radar survey of the Martian subsurface, revealing strongly reflecting layered sequences and providing insights into the geological history of Mars.