tectonic breccia

tectonic breccia

[tek′tän·ik ′brech·ə]
(petrology)
A breccia developed from brittle rocks, formed as a result of crustal movements and produced by lateral or vertical pressure. Also known as dynamic breccia; pressure breccia.
References in periodicals archive ?
Both the described fractures represent zones filled with a tectonic breccia (Fig.
The Nevera Breccia Complex is a broad linear feature developed along the Nevera Fault, a re-activated old deep crustal fracture in the Chim Formation basement which with renewed movement was propagated upwards into the young overlying volcanics of the Crater Mountain stratovolcano; tectonic breccias of the Nevera Fault mixed with younger hydrothermal breccias streaming to the surface and porphyry dykes that invaded the structure in their quest to vent at the surface.