• Strata or beds.
o Layers of sedimentary rock, one on top of the other.
o Bedding planes - interfaces between the strata.
o Generally form in a horizontal configuration, but there are exceptions.
o Cross-bedding.
Termination of a set of strata by another set of inclined layers.
Represents cycles of erosion and deposition, usually in a high energy environment (e.g., sand dunes and stream deposits).