Linking deeply-sourced volatile emissions to plateau growth dynamics in southeastern Tibetan Plateau.

Autor: Zhang M; Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China. mzhang@tju.edu.cn., Guo Z; Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences (CAS), Beijing, China. zfguo@mail.iggcas.ac.cn.; CAS Center for Excellence in Life and Paleoenvironment, Beijing, China. zfguo@mail.iggcas.ac.cn., Xu S; Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China. sheng.xu@tju.edu.cn., Barry PH; Marine Chemistry and Geochemistry Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA., Sano Y; Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China.; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, Japan.; Center for Advanced Marine Core Research, Kochi University, Kochi, Japan., Zhang L; School of Geology and Geomatics, Tianjin Chengjian University, Tianjin, China., Halldórsson SA; NordVulk, Institute of Earth Sciences, University of Iceland, Reykjavík, Iceland., Chen AT; Department of Geosciences, National Taiwan University, Taipei, Taiwan, ROC., Cheng Z; School of Earth Science and Engineering, Sun Yat-sen University, Guangzhou, China., Liu CQ; Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China., Li SL; Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China., Lang YC; Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China., Zheng G; Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China., Li Z; Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China., Li L; Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China., Li Y; Institute of Earthquake Forecasting, China Earthquake Administration, Beijing, China.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2021 Jul 06; Vol. 12 (1), pp. 4157. Date of Electronic Publication: 2021 Jul 06.
DOI: 10.1038/s41467-021-24415-y
Abstrakt: The episodic growth of high-elevation orogenic plateaux is controlled by a series of geodynamic processes. However, determining the underlying mechanisms that drive plateau growth dynamics over geological history and constraining the depths at which growth originates, remains challenging. Here we present He-CO 2 -N 2 systematics of hydrothermal fluids that reveal the existence of a lithospheric-scale fault system in the southeastern Tibetan Plateau, whereby multi-stage plateau growth occurred in the geological past and continues to the present. He isotopes provide unambiguous evidence for the involvement of mantle-scale dynamics in lateral expansion and localized surface uplift of the Tibetan Plateau. The excellent correlation between 3 He/ 4 He values and strain rates, along the strike of Indian indentation into Asia, suggests non-uniform distribution of stresses between the plateau boundary and interior, which modulate southeastward growth of the Tibetan Plateau within the context of India-Asia convergence. Our results demonstrate that deeply-sourced volatile geochemistry can be used to constrain deep dynamic processes involved in orogenic plateau growth.
Databáze: MEDLINE
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