HiRISE 3D: Embayment around a Ridge
Here, there appear to have been two embayment stages of lava, which is unusual. Worth a look to understand thicknesses and sequence.
https://www.uahirise.org/anaglyph/ESP_073179_2090_ESP_073469_2090_RED
NASA/JPL-Caltech/UArizona
#Mars #science