a process of deformation or metamorphism in which the grains of a rock are fractured and rotated.
noun (pl) -ses (-siːz)
(geology) the deformation of rocks by crushing and shearing
Relating to rocks consisting of cemented fragments that originate from the mechanical breakdown of rock associated with plate tectonic processes. Cataclastic rocks form in regions that have undergone intense metamorphism and are associated with other metamorphic features such as folds and faults. They typically contain bent, broken, and granular minerals.
a process of deformation or metamorphism in which the grains of a rock are fractured and rotated. noun (pl) -ses (-siːz) (geology) the deformation of rocks by crushing and shearing
adjective (of streams, valleys, etc) running in the direction of the dip of the surrounding rock strata
any violent upheaval, especially one of a social or political nature. Physical Geography. a sudden and violent physical action producing changes in the earth’s surface. an extensive flood; deluge. Contemporary Examples The poet remains coolly detached: a circumspect observer in the face of cataclysm. Catastrophe in Verse Eliza Griswold April 20, 2011 In the cataclysm […]
of, relating to, or resulting from a cataclysm. of the nature of, or having the effect of, a cataclysm: cataclysmic changes. Historical Examples “I’m ———,” said Sir John Gotch, meditating some cataclysmal expletive. The Wonderful Visit Herbert George Wells It is, in fact, nothing but one cataclysmal bang and shriek of shells and shrapnel. A […]