Southeastern Tibetan Plateau Growth Revealed by Inverse Analysis of Landscape Evolution Model

X. P. Yuan, R. Jiao, G. Dupont-Nivet, X. Shen

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The Cenozoic history of the Tibetan Plateau topography is critical for understanding the evolution of the Indian-Eurasian collision, climate, and biodiversity. However, the long-term growth and landscape evolution of the Tibetan Plateau remain ambiguous, it remains unclear if plateau uplift occurred soon after the India-Asia collision in the Paleogene (∼50–25 Ma) or later in the Neogene (∼20–5 Ma). Here, we reproduce the uplift history of the southeastern Tibetan Plateau using a 2D landscape evolution model, which simultaneously solves fluvial erosion and sediment transport processes in the drainage basins of the Three Rivers region (Yangtze, Mekong, and Salween Rivers). Our model was optimized through a formal inverse analysis with 20,000 forward simulations, which aims to reconcile the transient states of the present-day river profiles. The results, compared to existing paleoelevation and thermochronologic data, suggest initially low elevations (∼300–500 m) during the Paleogene, followed by a gradual southeastward propagation of topographic uplift of the plateau margin.

Original languageEnglish
Article numbere2021GL097623
JournalGeophysical Research Letters
Volume49
Issue number10
DOIs
StatePublished - 28 May 2022
Externally publishedYes

Keywords

  • Tibetan Plateau
  • fluvial erosion
  • inverse analysis
  • landscape evolution
  • mountain growth
  • propagating uplift

ASJC Scopus subject areas

  • Geophysics
  • General Earth and Planetary Sciences

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