In this question you will be drawing a part of a cliff which comprises three rock types A, B, C. A geologist sees a cliff where rock C forms the lower half of a cliff, and is instantly overlain by a sandstone (rock B) comprising well rounded grains with finely pitted surfaces. The sandstone reaches to the top of cliff. In this cliff exposure a gabbro (rock A) dyke passes right via both other rock types. Draw a part of the cliff and exhibit the relationship between rocks (A, B, C) label and give a key.