Sequence (geology)

In geology, a sequence is a stratigraphic unit which is bounded by an unconformity at the top and at the bottom.[1]

## Contents

* 1 Definition
* 2 Special cases and related concepts
* 3 See also
* 4 References

## Definition

In a more rigorous and general way, a sequence is defined as a

"relatively conformable [...], genetically related succession of strata bounded by unconformities or their correlative surfaces"[2]

## Special cases and related concepts

Special cases of sequences include type 1 sequences and type 2 sequences.[3] A related concept are parasequences. Contrary to their name they are not smaller sequences.

## See also

* Catena (soil)
* Sequence stratigraphy

## References

1. ↑ Catuneanu, Octavian (2011). "Sequence stratigraphy: methodology and nomenclature" (in en). Newsletters on Stratigraphy (E. Schweizerbart'sche Verlagsbuchhandlung) 44 (3): 183. doi:10.1127/0078-0421/2011/0011. http://doc.rero.ch/record/28034/files/str_ssm.pdf.
2. ↑ Patzkowsky, Mark E.; Holland, Steven M. (2012). Stratigraphic Paleobiology. Chicago: University of Chicago University Press. pp. 220.
3. ↑ Patzkowsky, Mark E.; Holland, Steven M. (2012). Stratigraphic Paleobiology. Chicago: University of Chicago University Press. pp. 42–43.

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