petrogenetic


pet·ro·gen·e·sis

P0224800 (pĕt′rō-jĕn′ĭ-sĭs)n. The branch of petrology that deals with the origin of rocks, especially igneous rocks.
pet′ro·ge·net′ic (-jə-nĕt′ĭk) adj.

petrogenetic

(ˌpɛtrəʊdʒɪˈnɛtɪk) adj (Geological Science) relating to petrogenesis