Abstract
A diverse, abundant, well-preserved radiolarian fauna in Jiazhu, Zhongba County of Tibet (in the western sector of the Yarlung Zangbo Suture Zone) is assigned to a late Palaeocene radiolarian zone, the Buryella pentadica interval Zone, spanning 59–56.5 Ma. The late Palaeocene radiolarian fauna and the tectonic attribution of both the radiolarian cherts and the basalt block indicate that oceanic crust persisted in the Zhongba area until the late Palaeocene, and that the initial collision between the Indian and Eurasian plates postdated the late Palaeocene. It is inferred that the Neo-Tethys was transformed into a remnant oceanic basin during the late Palaeocene, at the terminal stage of oceanic crust subduction, and that the closure of the remnant oceanic basin in the study region took place after the late Palaeocene.
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Zhang, K., Liang, Y., He, W. (2014). Palaeogene Radiolarian-Bearing Strata in Tibet: Implications for Neo-Tethys Evolution and Indian–Eurasian Collision. In: Rocha, R., Pais, J., Kullberg, J., Finney, S. (eds) STRATI 2013. Springer Geology. Springer, Cham. https://doi.org/10.1007/978-3-319-04364-7_223
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