Contrasting exhumation histories and relief development within the Three Rivers Region (south-east Tibet)

Ou, Xiong; Replumaz, Anne; van der Beek, Peter

doi:https://doi.org/10.5194/se-12-563-2021

Articles | Volume 12, issue 3

https://doi.org/10.5194/se-12-563-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/se-12-563-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 12, issue 3

Research article

|

04 Mar 2021

Research article |

| 04 Mar 2021

Contrasting exhumation histories and relief development within the Three Rivers Region (south-east Tibet)

Xiong Ou, Anne Replumaz, and Peter van der Beek

Supplement

https://doi.org/10.5194/se-12-563-2021-supplement

Model code and software

Pecube: a new finite-element code to solve the 3D heat transport equation including the effects of a time-varying, finite amplitude surface topography J. Braun https://doi.org/10.1016/S0098-3004(03)00052-9

Short summary

The low-relief, mean-elevation Baima Xueshan massif experienced slow exhumation at a rate of 0.01 km/Myr since at least 22 Ma and then regional rock uplift at 0.25 km/Myr since ~10 Ma. The high-relief, high-elevation Kawagebo massif shows much stronger local rock uplift related to the motion along a west-dipping thrust fault, at a rate of 0.45 km/Myr since at least 10 Ma, accelerating to 1.86 km/Myr since 1.6 Ma. Mekong River incision plays a minor role in total exhumation in both massifs.