petrographical
/ˌpɛtrəˈɡræfɪkəl/
adjective
- Relating to the scientific description and classification of rocks (alternative form of petrographic).
- The petrographical study focused on the sedimentary layers of the canyon.
- Petrographical techniques are essential for understanding the Earth's crust.
- He published a petrographical survey of the region's igneous formations.
Synonyms