Revised chronology of central Tibet uplift (Lunpola Basin) - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Science Advances Year : 2020

Revised chronology of central Tibet uplift (Lunpola Basin)


Knowledge of the topographic evolution of the Tibetan Plateau is essential for understanding its construction and its influences on climate, environment, and biodiversity. Previous elevations estimated from stable isotope records from the Lunpola Basin in central Tibet, which indicate a high plateau since at least 35 Ma, are challenged by recent discoveries of low-elevation tropical fossils apparently deposited at 25.5 Ma. Here, we use magnetostratigraphic and radiochronologic dating to revise the chronology of elevation estimates from the Lunpola Basin. The updated ages reconcile previous results and indicate that the elevations of central Tibet were generally low (<2.3 km) at 39.5 Ma and high (3.5 to 4.5 km) at ~26 Ma. This supports the existence in the Eocene of low-elevation longitudinally oriented narrow regions until their uplift in the early Miocene, with potential implications for the growth mechanisms of the Tibetan Plateau, Asian atmospheric circulation, surface processes, and biotic evolution.
Fichier principal
Vignette du fichier
Fang-2020.pdf (6.81 Mo) Télécharger le fichier
Origin Publisher files allowed on an open archive

Dates and versions

insu-03051597 , version 1 (10-12-2020)




Xiaomin Fang, Guillaume Dupont-Nivet, Chengshan Wang, Chunhui Song, Qingquan Meng, et al.. Revised chronology of central Tibet uplift (Lunpola Basin). Science Advances , 2020, 6 (50), pp.eaba7298. ⟨10.1126/sciadv.aba7298⟩. ⟨insu-03051597⟩
119 View
102 Download



Gmail Mastodon Facebook X LinkedIn More