Lithostratigraphic units are defined by the lithological properties of the surrounding rock, in contrast to biostratigraphic units which are defined by fossil content.
Notes on verification
Confirmed by ICS official stratigraphic guide and multiple geological reference sources with no contradictions found. [cascade flags: aggregator_dropped_primary_exists | tier=bronze indep_score=0.3 clusters=2 claim_tier=everyday]
Sources
- Biozone (wikipedia)
- https://stratigraphy.org/guide/rel (corroboration)
- https://geology.fandom.com/wiki/Lithostratigraphic_Units_(Philippine_Stratigraphic_Guide) (corroboration)
- https://stratigraphy.org/guide/litho (corroboration)