Characteristics of Sedimentary Rocks
indicating direction of current flow – Crossbeds: internal layering at an angle inside a stratum (lee side of a ripple, or lee side of a sand dune) – Mud cracks: develop in fine-grained sediment exposed to drying for an extended period. • Coquina • Evaporation of sea water: first calcite, then gypsum, then halite precipitating in a sequence
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