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Expansion of the Tibetan Plateau during the Neogene

Author

Listed:
  • Weitao Wang

    (State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration)

  • Wenjun Zheng

    (State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration
    School of Earth Science and Geological Engineering, Sun Yan-Sen University)

  • Peizhen Zhang

    (State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration
    School of Earth Science and Geological Engineering, Sun Yan-Sen University)

  • Qiang Li

    (Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences)

  • Eric Kirby

    (State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration
    College of Earth, Ocean and Atmospheric Sciences, Oregon State University)

  • Daoyang Yuan

    (Lanzhou Institute of Seismology, China Earthquake Administration)

  • Dewen Zheng

    (State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration)

  • Caicai Liu

    (State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration)

  • Zhicai Wang

    (Institute of Earthquake Engineering, Shandong Earthquake Administration)

  • Huiping Zhang

    (State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration)

  • Jianzhang Pang

    (State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration)

Abstract

The appearance of detritus shed from mountain ranges along the northern margin of the Tibetan Plateau heralds the Cenozoic development of high topography. Current estimates of the age of the basal conglomerate in the Qaidam basin place this event in Paleocene-Eocene. Here we present new magnetostratigraphy and mammalian biostratigraphy that refine the onset of basin fill to ∼25.5 Myr and reveal that sediment accumulated continuously until ∼4.8 Myr. Sediment provenance implies a sustained source in the East Kunlun Shan throughout this time period. However, the appearance of detritus from the Qilian Shan at ∼12 Myr suggests emergence of topography north of the Qaidam occurred during the late Miocene. Our results imply that deformation and mountain building significantly post-date Indo-Asian collision and challenge the suggestion that the extent of the plateau has remained constant through time. Rather, our results require expansion of high topography during the past 25 Myr.

Suggested Citation

  • Weitao Wang & Wenjun Zheng & Peizhen Zhang & Qiang Li & Eric Kirby & Daoyang Yuan & Dewen Zheng & Caicai Liu & Zhicai Wang & Huiping Zhang & Jianzhang Pang, 2017. "Expansion of the Tibetan Plateau during the Neogene," Nature Communications, Nature, vol. 8(1), pages 1-12, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15887
    DOI: 10.1038/ncomms15887
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