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Nd-Sr isotopic compositions of 12 Mesozoic granitoids from Jiangxi Province have been reported. They show loe-ε_(ND)(-13.8—- 8.3), high-l_(sr)(0.71069—0.73981) and old t_(DM) (2087—1635 Ma). Comparison between the Sm-Nd isotopic compositions of the granitoids and those of the basement metamorphic rocks suggests that these granitoids were mainly derived from the metasedimentary rocks. There is an east-west trend Mesozoic granitoid zone with lowt_(DM) from S. Jiangxi to S. Fujian. The origin of these granites was preliminarily discussed.
Nd-Sr isotopic compositions of 12 Mesozoic granitoids from Jiangxi Province have been reported. They show loe-ε_ (ND) (-13.8- 8.3), high-l_ (sr) (0.71069-0.73981) and old t_ (DM) ( 2087-1635 Ma). Comparison between the granitids and those of the basement metamorphic rocks suggests that these granitoids were mainly derived from the metasedimentary rocks. There is an east-west trend Mesozoic granitoid zone with lowt_ (DM ) from S. Jiangxi to S. Fujian. The origin of these granites was preliminarily discussed.