Definitions

1. adjective

relating to or dealing with the origin, composition, and structure of rocks, particularly igneous, sedimentary, and metamorphic rocks

“The petrologic study of the mountain revealed that it was formed from a combination of ancient volcanic eruptions and tectonic plate movement.”

2. noun

a person who studies the origin, composition, and structure of rocks, particularly igneous, sedimentary, and metamorphic rocks

“The petrologist’s research helped scientists better understand the Earth’s geological history.”

3. noun

the branch of geology that deals with the origin, composition, and structure of rocks, particularly igneous, sedimentary, and metamorphic rocks

“Petrology is an essential field of study for anyone interested in Earth’s geological history.”