Geologist conducts research into the nature and history of the Earth’s crust to increase scientific knowledge and to develop practical applications in such fields as mineral exploitation and civil engineering. He/she applies theoretical knowledge and research data to locate and assess the development potential of mineral, gas, and oil deposits and underground water resources, and applies geological knowledge to problems encountered in civil engineering projects such as construction of dams, bridges, tunnels and large buildings. He/she prepares geological maps and diagrams of regions studied, using aerial photographs where available.