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stratigraphic boundary
Scope Notes: Before 1993, also search boundary which was used for this concept from 1978-1992. Added to Thesaurus in 1993.
Narrower Terms:
K-T boundary Permian-Triassic boundary Triassic-Jurassic boundary
See Also:
allostratigraphy OAE 2 stratigraphic columns stratigraphy stratotypes
Use For Term:
boundaries, stratigraphic