Differential surface uplift: Cenozoic paleoelevation history of the Tibetan Plateau
2016
The surface uplift history of the Tibetan Plateau has provided
a key boundary criterion for various geological, climatic, and environmental
events since the Cenozoic. The paleoelevation history of the plateau
is organically associated with interactions amongst deep geodynamics,
earth surface processes, and climate change. Understanding of plateau
uplift history has been advanced by the development of a number of
paleoaltimetries and their application to studies of the Tibetan Plateau:
the paleogeomorphic scenario for the Early Eocene Tibetan Plateau
is thought to include two high mountains, the ca. 4500 m Gangdese
Mountains to the south, and the ca. 5000 m Qiangtang Center Watershed
Mountains to the north. Between these ranges, a low-elevation basin
(ca. 2500 m) is thought to have been present. The Himalayas in the
southern Tibetan Plateau was close to sea level at this time, while
the Hoh Xil Basin in the north reached an elevation of no more than
1500 m. Thus, the so-called “Roof of the World” Tibetan
Plateau formed subsequent to the Miocene. Nevertheless,, the uplift
histories of the different terranes that comprise this plateau currently
remain unclear, which constrains the uplift history reconstruction
of the entire Tibetan Plateau. Additional paleoelevation data from
different areas, obtained using multi-paleoaltimeters, is required
to resolve the forms and processes of Tibetan Plateau uplift and extension.
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