An island of granite with folded and plunging aplite intrusion structures.
Pulau Dodol is underlain by granite forming almost the entire island. The significant geodiversity feature here is an aplite intrusion structure into the bedrock that appears folded and plunging. Other structures such as aplite veins and quartz veins can also be identified. The rock outcrops here are also rich in biotite mineral, arranged both randomly and in parallel alignment.