A complex magmatic history for Mars
These discoveries where made possible thanks to the NASA Mars Reconnaissance Orbiter and ESA Mars Express missions, including the CRISM and OMEGA infrared spectrometers.
Reference : Carter J. and F. Poulet, Ancient plutonic processes on Mars inferred from the detection of possible anorthositic terrains, Nature Geo. This article is also the subject of a News & Views comment of Nature Geoscience
This image shows the location of anorthositic terrains detected from orbit over an ancient butte (to the south) and a degraded crater rim (to the north) of the highland region of Mars. The topographic image is built using data from the ESA HRSC instrument onboard Mars Express, while the anorthositic terrains are mapped in green using two observations from the NASA CRISM instrument onboard MRO.