Diastem

In geology, a diastem (plural: diastems) is a short interruption in sedimentation with little or no erosion.[1] They can also be described as very short unconformities (more precisely as very short paraconformities).[2]

Definition

The International Commission on Stratigraphy defines a diastem as

"[a] short interruption in deposition with little or no erosion before resumption of sedimentation"[3]

Duration

Studies indicate that the age contained in diastems ranges from a few hundred to a few thousand years in shelf settings as well as throughout the paleozoic.[4]

References

  1. ↑ Catuneanu, Octavian (2006). Principles of sequence stratigraphy. Amsterdam: Elsevier.
  2. ↑ Kowalewsky, Michal; Bambach, Richard K. (2003). Harries, Peter J., ed. High-resolution approaches in stratigraphic paleontology. Springer Science & Business Media. p. 24.
  3. ↑ "Unconformity-bounded Units". International Commission on Stratigraphy. Retrieved 12 May 2018.
  4. ↑ Kowalewsky, Michal; Bambach, Richard K. (2003). Harries, Peter J., ed. High-resolution approaches in stratigraphic paleontology. Springer Science & Business Media. p. 34.
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