sr-nd-pb
2.The Sr-Nd-Pb isotope evolution in the investigated area appear in a clear track.
3.Their Sr-Nd,Pb-Pb,Sr-Pb and Nd-Pb isotopic signatures indicate that most carbonatites were derived from a transitional source between EMI and EMII components,related to recycling of the pelagic/terrigenous sediments with various mass ratios and underlying MORB-like oceanic crust by subduction process in Proterozoic times,whereas some carbonatites underwent Sr-Nd-Pb contamination by crustal materials.
5.Sr-Nd-Pb isotope geochemistry and tectonic setting of Devonian polymetallic metallogenic belt on the Southern margin of Altaid,Xingjing.
9.On the basis of Sr-Nd-Pb isotope geochemical and tectonic features mentioned above,it is assumed that the endmember component of EMⅡ of Mesozoic mantle sources in southerm Jiangxi was derived from the Gondwanaland.
10.The relatively homogeneous Sr-Nd-Pb isotopic compositions of the two kinds of basalts indicate that Eogene basalts in Yangxin area were derived from convective asthenosphere mantle, but Eocene basalts experienced, in some extent, the contamination by EMⅠand EMⅡenriched mantle.

