bed

cycle

rhythms and cycles

sequence

Einsele et al (1991) note that processes that are influenced by events external to the depositional basin, including climate, tectonic movement and eustasy, primarily control the character of these sequences. The uniformly repeated beds of these rythmic sequences have often have widespread continuity with the processes involved having operated in several adjacent or widespread basins. Examples may include the sequences of Vail et al 1971.

References
Dott R.H. 1988, An episodic view of shallow marine clastic sedimentation. In de Boer P. L. van Gelder A., Nio S.D. eds Tide influenced sedimentary environments and facies. Reidel , Dordecht, pp3-12
Einsele G., Ricken W., and Seilacher A., (editors), 1991, "Cycles and Events in Stratigraphy", Springer-Verlag, Berlin, Heidelberg, New York 1991. 955p.
Vail, P. R. , R. G. Todd,and J. B. Sangree, 1977, Seismic Stratigraphy and Global Changes of Sea Level: Part 5. Chronostratigraphic Significance of Seismic Reflections: Section 2. Application of Seismic Reflection Configuration to Stratigraphic Interpretation Memoir 26, Pages 99 – 116.