Neco Model Questions Vol1 2023 Geography Question 6

A geologist studies a region where three rock units are exposed: a dark fine‑grained igneous rock, a coarse‑grained sedimentary rock with visible pebble conglomerates, and a foliated metamorphic rock. The following observations are recorded: - The igneous rock contains interlocking crystals of quartz and feldspar, and is cut by a set of vertical joints spaced about 0.5 m apart. - The sedimentary rock consists of rounded quartz pebbles (average diameter 2 cm) cemented by calcite; cross‑bedding is evident with a dip of 15° towards the east. - The metamorphic rock shows a well‑developed foliation that dips 30° to the southwest and contains garnet crystals of roughly 0.8 cm length. The geologist also notes that the region has experienced an uplift of 150 m over the last 2 million years. Answer the following questions: