engineering recuitment APSC AE Civil 2020 Test Series Soil Mechanics and Foundation Engineering Soil Structure and Clay Mineralogy
An unconformity is
1
A surface of erosion or non-deposition as detected in a sequence of rocks
2
A layer of boulders and pebbles in a sequence of rocks
3
A layer of clay or shale in an igneous mass
4
A type of joint especially associated with folded and faulted rocks