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超乾燥

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HiRISE image illustrating superpositioning, a principle that lets geologists determine the relative ages of surface units. The dark-toned lava flow overlies (is younger than) the light-toned, more heavily cratered terrain (older lava flow?) at right. The ejecta of the crater at center overlies both units, indicating that the crater is the youngest feature in the image.

アマゾニアン時代火星の最新地質時代とその環境

火星アマゾニアン地質時代アマゾニス平原
2026年8月11日続きを読む →