Displacement range of Cretaceous MTL and a solution for terrane duplication problem of SW-Japan.

通过碎屑锆石年代学的物源分析，估算了日本西南部前白垩纪地层的MTL位移范围。日本西南部内带侏罗纪增生杂岩中的锆石在1800 Ma左右具有明显的年龄集群，显示出北中国成因。而来自外带的锆石主要由300 Ma以下的年轻一代组成。这种差异可以追溯到九州西部到爱知县北部。据此，MTL的位移范围应大于800公里。

Displacement rage of MTL was estimated by the provenance analysis using detrital zircon chronology for the Pre-Cretaceous formations in SW-Japan. Zircons from Jurassic accretionary complex in the Inner zone of SW Japan have distinct age cluster at around 1800Ma showing North China origin. While zircons from Outer zone consist mainly of younger generation less than 300Ma. This difference can be traced from western Kyushu to northern Aichi Prefecture. From this, the displacement range of MTL should be larger than 800km.