Identification of mantle origin of geothermal spring gases in Hengjing area in south Jiangxi province;

The analysis on identifying indicators,such as CO2 carbon isotope and 3He-to-4He ratio,shows that the high content CO2 of gas reservoir in Songliao Basin can be distinguished as mantle origin.

Characteristics of mantle source for Jining Cenozoic basalts from southern Inner Mongolia:evidence from element and Sr-Nd-Pb isotopic geochemistry.Acta Petrologica;

All these features indicate consistently that the ore-bearing magma was derived from an enriched lithospheric mantle source which had been metasomatized by the subducted sedimentary melt,and that the magma originated from a source with low extent of partial melting (about 10%) at a shallow depth of the spinel lherzolite facies.