Nyainqentanglha Shan: A window into the tectonic, thermal, and geochemical evolution of the Lhasa block, southern Tibet
In the Nyainqentanglha (NQTL) massif, southern Tibet, a late Cenozoic, SE dipping, normal fault exhumed an oblique section of crust in its footwall. U-Th-Pb dating of zircon and monazite from footwall exposures reveals a collage of felsic intrusions including Cretaceous-early Tertiary and Miocene granitoids. Ages of the latter span >10 m.y., suggesting semicontinuous or episodic Miocene magmatism. Geochemical and isotopic analyses show a Gangdese arc affinity, indicating significant mantle heat...[Show more]
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|Source:||Journal of Geophysical Research|
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