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Resilience of the Asian atmospheric circulation shown by Paleogene dust provenance

Author

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  • A. Licht

    (Biodiversity Institute, University of Kansas
    Institute of Earth and Environmental Sciences, Universität Potsdam
    University of Washington)

  • G. Dupont-Nivet

    (Institute of Earth and Environmental Sciences, Universität Potsdam
    Géosciences Rennes, UMR CNRS 6118, Université de Rennes
    Key Laboratory of Orogenic Belts and Crustal Evolution, Peking University)

  • A. Pullen

    (University of Arizona
    University of Rochester)

  • P. Kapp

    (University of Arizona)

  • H. A. Abels

    (Delft University of Technology)

  • Z. Lai

    (School of Earth Sciences, China University of Geosciences)

  • Z. Guo

    (Key Laboratory of Orogenic Belts and Crustal Evolution, Peking University)

  • J. Abell

    (University of Arizona)

  • D. Giesler

    (University of Arizona)

Abstract

The onset of modern central Asian atmospheric circulation is traditionally linked to the interplay of surface uplift of the Mongolian and Tibetan-Himalayan orogens, retreat of the Paratethys sea from central Asia and Cenozoic global cooling. Although the role of these players has not yet been unravelled, the vast dust deposits of central China support the presence of arid conditions and modern atmospheric pathways for the last 25 million years (Myr). Here, we present provenance data from older (42–33 Myr) dust deposits, at a time when the Tibetan Plateau was less developed, the Paratethys sea still present in central Asia and atmospheric pCO2 much higher. Our results show that dust sources and near-surface atmospheric circulation have changed little since at least 42 Myr. Our findings indicate that the locus of central Asian high pressures and concurrent aridity is a resilient feature only modulated by mountain building, global cooling and sea retreat.

Suggested Citation

  • A. Licht & G. Dupont-Nivet & A. Pullen & P. Kapp & H. A. Abels & Z. Lai & Z. Guo & J. Abell & D. Giesler, 2016. "Resilience of the Asian atmospheric circulation shown by Paleogene dust provenance," Nature Communications, Nature, vol. 7(1), pages 1-6, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12390
    DOI: 10.1038/ncomms12390
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