Two series of Ediacaran collision-related granites in the Guéra Massif (Chad): tectonomagmatic constraints on the terminal collision of the eastern Central African Orogenic Belt

John Gregory Shellnutt1, Ngoc Ha T. Pham2, Meng-Wan Yeh1 and Tung-Yi Lee3, (1)NTNU National Taiwan Normal University, Taipei, Taiwan, (2)Department of Earth Sciences, National Taiwan Normal University, Taipei, Taiwan, (3)Natl Taiwan Normal Univ, Taipei, Taiwan