A lithostratigraphic unit is defined by the lithological properties of the surrounding rock, in contrast to a biostratigraphic unit which is defined by fossil content.
Notes on verification
Standard geological definitions confirmed by multiple authoritative sources including the International Commission on Stratigraphy's official guide.
Sources
- Biozone (en.wikipedia.org)
- https://stratigraphy.org/guide/rel (stratigraphy.org)
- https://geology.fandom.com/wiki/Lithostratigraphic_Units_(Philippine_Stratigraphic_Guide) (geology.fandom.com)
- https://www.geol.umd.edu/~tholtz/G102/lectures/102lith.html (geol.umd.edu)
- https://timescalefoundation.org/strat_guide/rel.html (timescalefoundation.org)