| 释义 |
cataclastic, a. Geol.|kætəˈklæstɪk|
[ad. Norw. kataklas(-struktur) (T. Kjerulf 1885, in Nyt Mag. Naturvidensk. XXIX. 268), f. Gr. κατά down + κλαστός broken (κλᾶν to break).]
Designating a structural character due to intense crushing.
1887J. J. H. Teall in Geol. Mag. IV. 493 The structures are of the kind for which Prof. Kjerulf has proposed the term cataclastic. I venture to suggest..that we should distinguish between the three types of clastic rocks at present recognized by using the terms epiclastic, cataclastic and pyroclastic...Cataclastic—Rocks largely composed of fragments produced during the deformation of older rocks by the earth stresses. 1896J. W. Judd Student's Lyell 560 Many metamorphic rocks exhibit a similar ‘cataclastic’ structure. 1903Geikie Text-bk. Geol. (ed. 4) 421 When the temperature is 300° C. or 400° C. no cataclastic structure is observable. 1958Van Nostrand's Sci. Encycl. (ed. 3) 287/1 Cataclastic..has the same meaning as crush breccias. This term is also applied to the deformation and granulation of minerals such as may take place during dynamic metamorphism. |