Study of the inclusions and the isotopic compositions of volatile components in volcanic rocks in the Okinawa Trough;

The chemical components and isotopic compositions of fluid inclusions in differe nt carbonate reservoirs in Weiyuan,Ziyang and Longchang gas fields in the southwest of Sichuan Basin are measured by means of on-line mass spectrometry connected with magnetic force crushing equipment to break fluid inclusions unde r vacuum.

Based on data of runoff and water isotopic compositions in the Yarlung Zangbo River,this paper mainly analyzes the spatio-temporal distribution of runoff and isotopic effect of precipitation in this area.

The origin of dawsonite is emphatically contrasted and analyzed by stable isotope composition of dawsonite.

Based on the information of hydrogen and oxygen isotope compositions, tritium contents, deuterium excess parameters (d-excess), this paper analyses and discusses the recharge resource and altitude ,removed patch ,detained time and hydraulic connection at the Zhenzhu spring and Feicui spring in the research area.

Based on the isotope composition features of water bodies in Sanjiashui area ,this paper use the theory of deuterium excess parameter (d) to discuss and cause of formulation, recharge source, removed patch, detained time and dynamics feature on ground water.