Genesis and Geological Significance of Granite Caves in Laoshan of China

Under the action of weathering and gravitational collapse on the joints and fractures of granite in Laoshan of China, a host of tourism geological landscapes have been developed such as "marvelous peaks, grotesque caves and bizarre rocks". At present, more than 40 granite caves have been discovered in Laoshan. Granite caves can be classified into two types, primary and subsequent according to their genesis. The former consists of only one type, large miarolitic cave (or bubble-like cave), and the latter consists of three types, rolling stone piled cave, fracture rolling stone cave and weathered slipping cave. The research of granite caves not only presents important tourism values, but also is significant for understanding the paleogeographic environment in the Last Glacial and the primitive environment of magma. The primary granite cave of Laoshan is currently the largest granite miarolitic cave ever known in China and also the second granite bubble-like cave discovered. As an extremely rare geological relic, it is also of great value for sightseeing and science popularization.