Regolith
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Regolith is a blanket of unconsolidated, loose, heterogeneous superficial deposits covering solid rock. It includes dust, broken rocks, and other related materials and is present on Earth, the Moon, M
Surface of asteroid 433 Eros
Alluvial gravels in Alaska
This famous image of Buzz Aldrin's footprint taken during Apollo 11 shows the fine and powdery texture of the lunar surface.
Martian sand and boulders photographed by NASA's Mars Exploration Rover Spirit
Saprolite
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Saprolite is a chemically weathered rock. Saprolites form in the lower zones of soil profiles and represent deep weathering of the bedrock surface. In most outcrops, its color comes from ferric compou
A represents soil; B represents laterite, a regolith; C represents saprolite, a less-weathered regolith; beneath C is bedrock.
Saprolite at Arranmore (Ireland). Transition from tectonized quartzite through saprolite to laterite. The weathered section is covered by glacial drift with scattered erratics, Holocene sandy soil and thin bog.