A mixture of diverse deformed rocks formed in the accretionary prism at a convergent plate margin.
a chaotic mixture of folded, sheared, faulted, and blueschist metamorphosed blocks of rock formed in a subduction zone
Mixture of rocks formed by tectonic disruption, such as multiple faulting, which brings disparate rock types together. Usually consists of a matrix of weak material, like shale, with hard pieces of exotic rocks, such as gneiss or igneous rocks.
A body of rocks consisting of large blocks (mappable size) of different rocks jumbled together with little continuity of contacts.