The two clusters of silicon isotopes of ores are consistent with silicon isotopes of Devonian thermal sedi.

For the first time uns program takes on the silicon isotope studies on petrogenesis and metallogenesis in the middle and lower reaches of Yangtze River,which have further expounded problems such as the formation and evolution of the magmatic rocks,the ore-forming material s origins and the relations of the two type copper deposits in the Yueshan copper orefield.

Through testing 45 carbonate samples collected from PermoCarboniferous caol measures of the Hedong coalfield,the distributions characteristics of carbon and oxygen isotopes in sequences are analyzed,whose feasibilities for sequence subdivision and correlation,as well as for study of relative sea level variations and late Paleozoic facies are also discussed.

They are among the few minerals that show mass independent fractionation of oxygen isotopes.

In order to analyse the regulation of past global changes in the low latitude and high elevation region,based on the fundamental of the high precision and high resolution thermal ionization mass spectrometry uranium(TIMS-U) series dating and the oxygen isotopes,taking a stalagmite from Qixing Cave in Guizhou Province for example,a time sequence of the paleoclimatic changes was established from 43.

Oxygen isotope geochemistry of UHP metamorphic rocks at Taohang in the Sulu terrane and its constraints on radiometric dating.;

Kinetics of oxygen isotope exchange between water and minerals of miarolitic alkaline granite from Nianzishan;

Carbon and oxygen isotope geochemistry of carbonatite dykes from Bayan Obo, Nei Mongol;