the branch of geology that studies rocks: their origin and formation and mineral composition and classification
同义词：petrology
lithology详细解释
li.thol.o.gy
n.（名词） The gross physical character of a rock or rock formation. 岩性：一种岩石或岩石构造的所有物理属性 The microscopic study, description, and classification of rock. 岩性学：对岩石的微观研究、描绘和分类
