1.variant of 岩层[yán céng]2.rock strata
1.igneous rock (geology)2.volcanic rock
sedimentary rock (geology)
1.rock painting2.picture or writing carved on rocks
metamorphic rock (geology)
Iwate (prefecture in Japan)
1.rock climbing2.to climb a rockface
limestone (abbr. for 石灰岩[shí huī yán])
1.petrology2.lithology3.study of rocks