Late Neoproterozoic thermal events in the northern Lhasa terrane, south Tibet: Zircon chronology and tectonic implications

Petrogenesis and metallogenic implications of Cretaceous magmatism in Central Lhasa, Tibetan Plateau: A case study from the Lunggar Fe skarn deposit and perspective review

“…The T DM (Nd) and T DM2 (Hf) ages of 1.24–1.29 and 1.06–1.28 Ga both suggest ancient crustal origin for the granodiorite. Subducted ancient Indian continental crust and Precambrian basement of Central Lhasa are both potential candidates (Dong et al, ). According to geophysical data, the subducted Indian continental crust is located far from the Central Lhasa region during the Early Cretaceous and was therefore unlikely to affect the magmatism in Central Lhasa (C. Li, van der Hilst, Meltzer, & Engdahl, ; Nábělek et al, ).…”

“…The Sumdo eclogites and amphibole schists along the eastern LMF represent the Paleo‐Tethyan oceanic subduction and continental collision between Central and Southern Lhasa during Late Permian to Middle Triassic (~270–228 Ma; D. D. Cao, Cheng, & Zhang, ; Cheng, Liu, Vervoort, & Lu, ; Xu, Dilek, et al, ; K. J. Zhang, Xia, et al, ). Central Lhasa was once a separate continent with Precambrian crystalline basement (Dong et al, ; D. G. Hu et al, ) and covered by a Permian–Carboniferous metasedimentary sequence (Leier, Kapp, Gehrels, & DeCelles, ) and Late Jurassic–Early Cretaceous volcanic‐sedimentary sequence (i.e., Zenong Group; Y. Chen et al, ; L. Y. Wang, Zheng, Yang, et al, ; T. S. Yang et al, ).…”

Identification of Early Carboniferous Granitoids from Southern Tibet and Implications for Terrane Assembly Related to the Paleo-Tethyan Evolution

“…The central Lhasa terrane comprises Ordovician-Cenozoic volcanosedimentary sequences (Pan et al 2004;Kang et al 2008;Zhu et al 2009aZhu et al , 2010Zhu et al , 2011a and PermianEocene granitic rocks (Chu et al 2006;Wen et al 2008;Zhu et al 2009cZhu et al , 2010Zhu et al , 2011b. Precambrian basement is rarely identified, now exposed only west of Nam Tso in the central Lhasa terrane (Hu et al 2005;Zhang et al 2010;Dong et al 2011), as the Amdo microcontinent should separated from the Lhasa terrane on the basis of the new study (Zhu et al 2011c). …”

Geological characteristics and age of the Dahongliutan Fe-ore deposit in the Western Kunlun orogenic belt, Xinjiang, northwestern China

“…The direct evidence for synchronous magmatic rocks or contemporaneous metamorphic or deformational events have not yet been found in the Tianshuihai terrane, the Late NeoproterozoicCambrian ages obtained in our study suggest the existence of a provenance from which these zircons were sourced. Detrital zircon age peaks of 690, 625, 620 and 618 Ma have been reported in the Tarim-, Qiangtang-, Lhasa-, and Himalaya blocks (Dong et al, 2011;He et al, 2011;Ravikant et al, 2011;Zhu et al, 2011a,b;He et al, 2014). Also, the 660-610 Ma magmatic rocks, including the potassic granitoids (Ge et al, 2012), peraluminous granite (Luo et al, 2011) and mafic dykes (Zhu et al, 2008(Zhu et al, , 2011a in the northern Tarim Craton, have been reported.…”