designating or of a rock, esp. a metamorphic rock, that was formed, bent, broken, etc. by extreme mechanical pressure
Word origin
< Gr kataklastos, broken down < kataklan, to snap off: see cata- & clastic
Examples of 'cataclastic' in a sentence
cataclastic
Subsequent alkaline metasomatism, cataclastic deformation, and silicification transformed these varieties into a pegmatitic granite.
Lucretia Ghergari, Cristina Maris 2007, 'Petrology and geochemistry of the Muntele Mare granitoid (Northern Apuseni Mountains),Romania', Studia Universitatis Babes-Bolyai: Geologiahttp://scholarcommons.usf.edu/geologia/vol52/iss2/art2/. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Finally, the lowest values were ascertained for cataclastic coal.
Katarzyna Godyń, Alena Kožušníková 2019, 'Microhardness of Coal from Near-Fault Zones in Coal Seams Threatened with Gas-GeodynamicPhenomena, Upper Silesian Coal Basin, Poland', Energieshttps://www.mdpi.com/1996-1073/12/9/1756. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The tested objects were exogenically fractured fragments, cataclastic, and mylonitic structures.
Katarzyna Godyń, Alena Kožušníková 2019, 'Microhardness of Coal from Near-Fault Zones in Coal Seams Threatened with Gas-GeodynamicPhenomena, Upper Silesian Coal Basin, Poland', Energieshttps://www.mdpi.com/1996-1073/12/9/1756. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
A different thermal response was highlighted for the cataclastic zone as well.
Jessica Maria Chicco, Damiano Vacha, Giuseppe Mandrone 2019, 'Thermo-Physical and Geo-Mechanical Characterization of Faulted Carbonate Rock Masses(Valdieri, Italy)', Remote Sensinghttp://www.mdpi.com/2072-4292/11/2/179. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Pb-isotopic data on cataclastic magnetite from the shear zone lie close to this isochron, indicating a similar origin.
Stendal, Henrik, Frei, Robert, Stensgaard, Bo Møller, Frei, Robert, Stensgaard, BoMøller 2006, 'Precambrian crustal evolution and Cretaceous–Palaeogene faulting in West Greenland:A lead isotope study of an Archaean gold prospect in the Attu region, Nagssugtoqidianorogen, West Greenland', Geological Survey of Denmark and Greenland Bulletinhttp://www.geus.dk/publications/bull/nr11/nr11_p053-060.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The hardness coefficient of coal decreases with the deformation degree in the order of primary structural, cataclastic and fragmented coal.
Shuaifeng Lv, Shengwei Wang, Rui Li, Guoqing Li, Ming Yuan, Jiacheng Wang 2019, 'Prediction of coal structure using particle size characteristics of coalbed methanewell cuttings', International Journal of Mining Science and Technologyhttp://www.sciencedirect.com/science/article/pii/S2095268617307619. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The results show that the primary layer structure can be observed in cataclastic coals and granulated coals.
Huifang YAO, Zhiqin KANG, Wei LI 2014, 'Deformation and reservoir properties of tectonically deformed coals', Petroleum Exploration and Developmenthttp://www.sciencedirect.com/science/article/pii/S1876380414600525. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)