What is probably the single most important, original, depositional feature in all sedimentary rocks?

Question

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Bedding or stratification is the arrangement of layers of sedimentary rocks, which is the single most important, original, depositional feature found in almost all sedimentary rocks. It provides important information about the environment in which the sediment was deposited, such as the direction and strength of currents, the depth of water, and the type of sedimentation. Cementation, lithification, and compaction are all important processes in the formation of sedimentary rocks, but they are not the primary feature that characterizes them.

What Is Probably the Single Most Important, Original, Depositional Feature