Answer: Layer of conglomerate
Step-by-step explanation:
Conglomerate is referred to as or known as the coarse-grained sedimentary rock which is mostly composed from the substantial fraction or parts of sub-angular to rounded clasts of gravel size, i.e. pebbles, granules, boulders, and cobbles, that are larger than 0.079 inches in the diameter. Conglomerates tends to form by lithification and consolidation and of the gravel.