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A stratotype or type section is a geological term that names the physical location or outcrop of a particular reference exposure of a stratigraphic sequence or stratigraphic boundary. If the stratigraphic unit is layered, it is called a stratotype, whereas the standard of reference for unlayered rocks is the type locality.[1] See also[edit]

Global Boundary Stratotype Section and Point

References[edit]

^ "Stratotypes and Type Localities". International Commission on Stratigraphy. Retrieved 20 August 2017. 

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Chronology

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