clastic

/klas-tik/US // ˈklæs tɪk //UK // (ˈklæstɪk) //

碎石,碎屑,碎石类,碎屑岩

Definitions

adj.形容词 adjective

1
- : Biology. breaking up into fragments or separate portions; dividing into parts.
- : pertaining to an anatomical model made up of detachable pieces.
- : Geology. noting or pertaining to rock or rocks composed of fragments or particles of older rocks or previously existing solid matter; fragmental.

Lastly, the name clastic has been given, because the rocks so called are formed by the breaking up of pre-existing rocks.
Clastic, klas′tik, adj. breaking into fragments, fragmental.