cat·a·clas·tic 
(kăt′ə-klăstĭk)
(kăt′ə-klăstĭk)adj.
Of or relating to rocks consisting of cemented fragments that originate from the mechanical breakdown of rocks associated with plate tectonic processes.
[From Norwegian kataklas- (in kataklasstruktur, structure formed by crushing : Greek kata-, cata- + Greek klastos, broken; see CLAST + Norwegian struktur, structure) + -IC.]