noun
- the branch of geology that deals with the description and systematic classification of rocks
Usage: geological
Examples
- The geology student specialized in petrography to identify mineral compositions in rock samples.
- Petrography involves examining thin sections of rocks under a microscope.
- The professor’s petrography course covered igneous, sedimentary, and metamorphic rock analysis.
- Modern petrography uses advanced imaging techniques to study rock textures.
- Her research in petrography helped identify the volcanic origin of the stone formations.
- The petrography lab was equipped with polarizing microscopes for detailed rock examination.