The history of western Pacific subduction and its relation to eastern China are big issues for geological investigations[1,2].Many models have been proposed for interpreting the tectonic scenarios of eastern China since the Mesozoic,but most have centered on the lithosphere destruction of the North China Craton[3–6]with increasing emphasis on the effect of The history of western Pacific subduction and its relation to eastern China are big issues for geological investigations [1,2] .Many models have been proposed for interpreting the tectonic scenarios of eastern China since the Mesozoic, but most have centered on the lithosphere destruction of the North China Craton [3-6] with increasing emphasis on the effect of