Evidence of Volcanic Explosion
May 9, 2007
The lower coarse-grained unit shows granular textures toward the bottom of the image and massive textures. Also shown is a feature interpreted to be a "bomb sag," which is 4 centimeters across. This false color image was obtained using Spirit's panoramic camera.
Topics: Aeolis quadrangle, Mars Exploration Rover, Spirit rover, Granularity, Petrology, Igneous rocks