NASAのインスタグラム(nasa) - 9月14日 03時16分

Rocks Here Sequester Some of Mars' Early Atmosphere

This view combines information from two instruments on NASA's Mars Reconnaissance Orbiter to map color-coded composition over the shape of the ground in a small portion of the Nili Fossae plains region of Mars' northern hemisphere.

This site is part of the largest known carbonate-rich deposit on Mars. In the color coding used for this map, green indicates a carbonate-rich composition, brown indicates olivine-rich sands, and purple indicates basaltic composition.

Carbon dioxide from the atmosphere on early Mars reacted with surface rocks to form carbonate, thinning the atmosphere by sequestering the carbon in the rocks.

Image credit: NASA/JPL-Caltech/JHUAPL/Univ. of Arizona

#mars #surface #planets #solarsystem #nasa #space #mro #redplanet #nofilter

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