Hydrogeochemisty has a wide application in oil and natural gas exploration and better effects have been achieved.Gas hydrate has similar origin and formation mechanisim as conventional oil and gas.This study investigated hydrogeochemical anomalies of gas hydrate in the Qiangtang Basin of the Qinghai-Tibet Plateau.19 fountain samples were collected in the Qiangtang Basin for analysis of chemical compositions,H,O and C istopic compositons,and aqueous methane.The fountains in the Qiangtang basin are divided in...