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Earth Materials
Minerals | Rocks

Sedimentary Rocks
Clastic Sedimentary Rocks

Medium to coarse grained clastic sedimentary rocks, such as sandstones and conglomerates are usually formed through high-energy processes of sedimentation such as glaciations, gravitational movements, strong winds and rapid water flow in environments such as mountain streams and wave-battered beaches. The rounding and sorting of clasts give clues about their transportation history. Fossils are rarely preserved.

Clastic Sedimentary Rocks
Sedimentary Structures