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

DefinitionEdit

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 conceptsEdit

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.

ReferencesEdit

  1. ^ Catuneanu, Octavian (2011). "Sequence stratigraphy: methodology and nomenclature". Newsletters on stratigraphy. E. Schweizerbart'sche Verlagsbuchhandlung. 44 (3): 183. 
  2. ^ Patzkowsky, Mark E.; Holland, Steven M. (2012). Stratigraphic Paleobiology. Chicago: University of Chicago University Press. p. 220. 
  3. ^ Patzkowsky, Mark E.; Holland, Steven M. (2012). Stratigraphic Paleobiology. Chicago: University of Chicago University Press. pp. 42–43.