Question

Pick the term which is not a crushed material.

(a) Gouge

(b) Fault breccia

(c) Kaolynite

(d) Mylonite

I have been asked this question during an interview for a job.

My query is from Fault Terminology in section Faults and Faulting of Engineering Geology

Answer 1

Right answer is (c) Kaolynite

Easiest explanation: Rubbing and mutual shearing of blocks during faulting, especially in brittle rocks, often produces typical crushed materials from the involved blocks that are useful indicators of faulting in that region. The most common and important products are: Gouge, Fault breccia and Mylonite.