NASA’s Perseverance Makes New Discoveries in Mars’ Jezero Crater – NASA Mars Exploration

The rover found that Jezero Crater’s floor is made up of volcanic rocks that have interacted with water.

Scientists got a surprise when NASA’s Perseverance Mars rover began examining rocks on the floor of Jezero Crater in spring of 2021: Because the crater held a lake billions of years ago, they had expected to find sedimentary rock, which would have formed when sand and mud settled in a once-watery environment. Instead, they discovered the floor was made of two types of igneous rock – one that formed deep underground from magma, the other from volcanic activity at the surface….