Exploration Period (1935–1953): The First Step Toward Standardization

In 1936, Huang Jiqing published the Problems of Colouring and Symbols of Geological Maps of China, Nan Yanzong’s Discussion on the Usage of Igneous Rock Patterns on Geological Maps and Wang Bingzhang’s Discussion on Symbols Colouring and Patterns of Geological Maps in 1937, which made the first step toward “unification” and “standardization” in geological mapping in China.