Concept information
Preferred term
stratigraphic unit
Definition
- A stratigraphic unit is a volume of rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrographic, lithologic or paleontologic features (facies) that characterize it. Units must be mappable and distinct from one another, but the contact need not be particularly distinct. For instance, a unit may be defined by terms such as when the sandstone component exceeds 75%. (Adapted from: https://en.wikipedia.org/wiki/Stratigraphic_unit)
Broader concept
In other languages
-
French
URI
http://data.loterre.fr/ark:/67375/QX8-MLQMRPVP-B
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