Erosion in southern Tibet shut down at ∼10 Ma due to enhanced rock uplift within the Himalaya

Marissa M. Tremblay; Matthew Fox; Jennifer L. Schmidt; Alka Tripathy-Lang; Matthew M. Wielicki; T. Mark Harrison; Peter K. Zeitler; David L. Shuster

doi:10.1073/pnas.1515652112

journal article Sep 14, 2015

Erosion in southern Tibet shut down at ∼10 Ma due to enhanced rock uplift within the Himalaya

Marissa M. Tremblay

Matthew Fox

Jennifer L. Schmidt Alka Tripathy-Lang Matthew M. Wielicki T. Mark Harrison Peter K. Zeitler David L. Shuster

Proceedings of the National Academy of Sciences Vol. 112 No. 39 pp. 12030-12035 · Proceedings of the National Academy of Sciences

View at Publisher Save 10.1073/pnas.1515652112

Abstract

SignificanceThe Himalaya–Tibet plateau system formed by collision between India and Asia that began ca. 50 Ma and is still ongoing today. Despite being the most studied example of continent–continent collision, the evolution of topography in the Himalaya and Tibetan plateau remains an area of vigorous debate and active research. We present geochemical data on the cooling history of granites from the southern Tibetan plateau, which indicate that exhumation of these granites and therefore erosion rates in this region decreased significantly by ∼10 Ma after ∼5 Ma of rapid erosion. We hypothesize that this change in erosion rate reflects a tectonically imposed shift of the topographic and drainage divides south to their current positions within the Himalaya.

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References

Details

Published: Sep 14, 2015
Vol/Issue: 112(39)
Pages: 12030-12035
License: View

Authors

M

Marissa M. Tremblay

Department of Earth and Planetary Science, University of California, Berkeley, CA 94720;; Berkeley Geochronology Center, Berkeley, CA 94709;

M

Matthew Fox

Department of Earth and Planetary Science, University of California, Berkeley, CA 94720;; Berkeley Geochronology Center, Berkeley, CA 94709;

J

Jennifer L. Schmidt

Department of Earth and Environmental Sciences, Lehigh University, Bethlehem, PA 18015;

A

Alka Tripathy-Lang

Department of Earth and Planetary Science, University of California, Berkeley, CA 94720;; Berkeley Geochronology Center, Berkeley, CA 94709;

M

Matthew M. Wielicki

Department of Earth, Planetary and Space Sciences, University of California, Los Angeles, CA 90095

T

T. Mark Harrison

Department of Earth, Planetary and Space Sciences, University of California, Los Angeles, CA 90095

P

Peter K. Zeitler

Department of Earth and Environmental Sciences, Lehigh University, Bethlehem, PA 18015;

D

David L. Shuster

Department of Earth and Planetary Science, University of California, Berkeley, CA 94720;; Berkeley Geochronology Center, Berkeley, CA 94709;

Funding

National Science Foundation Award: EAR-1111853

University of California Berkeley Award: Larsen Grant

Cite This Article

Marissa M. Tremblay, Matthew Fox, Jennifer L. Schmidt, et al. (2015). Erosion in southern Tibet shut down at ∼10 Ma due to enhanced rock uplift within the Himalaya. Proceedings of the National Academy of Sciences, 112(39), 12030-12035. https://doi.org/10.1073/pnas.1515652112

Erosion in southern Tibet shut down at ∼10 Ma due to enhanced rock uplift within the Himalaya

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