Statements (13)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | gptkb:geological_formation | 
| gptkbp:canBeMarkedBy | gptkb:unconformity fossil occurrence lithological change | 
| gptkbp:contrastsWith | top (geology) | 
| gptkbp:defines | lower boundary of a geological unit | 
| gptkbp:importantFor | geological mapping chronostratigraphy | 
| gptkbp:refersTo | bottom of a rock formation | 
| gptkbp:usedIn | stratigraphy | 
| gptkbp:bfsParent | gptkb:Base | 
| gptkbp:bfsLayer | 6 | 
| https://www.w3.org/2000/01/rdf-schema#label | Base (geology) |