The Department of Earth Science of Nanjing University was established in 1930, which was one of the earliest geological departments in Chinese universities. The Department of Earth Science of Nanjing University is now the largest geological department in China. In 1993, the Department of Earth Science became the national training base for teaching and research personnel in geology. In the past 70 years, the Department has trained thousands of personnel and professionals for the country. Many of them have now become world-well-known scholars, experts or leaders. Currently the Department offers 4 bachelor's degree programs: Geology; Geochemistry; Hydrogeology and Water Resources; Geologic Engineering . And the Department offers 2 programs for professional trainees: Digital Media Technology; Jewel Inspection and Business Administration. The Department offers 8 programs for postgraduates: Mineralogy, Petrology and Ore Deposit Study, Geochemistry, Structural Geology, Paleontology and  Stratigraphy, Hydrogeology and Water Resource, Resource Survey and Exploration; Geologic Engineering; Earth Investigation and Information Technology All these programs are open for both MA postgraduates and Doctoral postgraduates. Now the Department has an undergraduate student body of 80, MA postgraduate student body of 90 and doctoral postgraduate student body of 60. The ratio of undergraduate student and postgraduate student is nearly 1 to 1. It has three national key disciplines, namely, Ore Deposit Study and Geochemistry, Structural Geology and Hydrogeology and Engineering Geology. Petrology is a provincial key discipline. The Department has a faculty body of 147, and 93 of them are teachers. The Department benefits greatly from the concentration of these distinguished geologists: 34 professors and 52 associate professors are working here, including 4 academicians of the Academia Sinica. 24 professors of the Department are qualified Doctoral postgraduate supervisors. The Department has gained remarkable achievements in the research areas of granitic rocks, uolcanic rocks and related mineralizations, fluid processes in continental crusts, lithosphere structure and reaction between the crust and mantle in South China, dynamics of sedimentation in oil-gas basin and basin modeling, environmental geology and engineering geology of soil mass, and materials of minerals and rocks. In recent years, over 70 projects have won various awards. Every year, the Department publishes over 150 academic papers.