This study was funded by the National Natural Science Foundation of China (grant numbers 40272094, 40672131); We gratefully acknowledge Mr. Luo Xiuquan and Zhang Youquan from the Petroleum Geology Research and Laboratory Center, Institute of Petroleum Exploration and Development, Beijing, for their work on the 40Ar/39Ar analysis.
Bulk separates of porphyroclastic phengite, neoformed phengite and their mixtures from the Tan-Lu HP mylonites overprinted on the Sulu UHP rocks were analyzed with the 40Ar/39Ar step heating method. Two samples of the...