Principle of Hydrogen Isotope Geochemistry Paleo-altimeter and its Potential in Reconstructing Paleo-elevation of the Southeastern Tibetan Plateau  

作　　者：CUI Fengzhen LIU-ZENG Jing LI Yunshuai XU Qiang TANG Maoyun WANG Heng SUN Zhaotong 

机构地区：[1]School of Earth System Science,Tianjin University,Tianjin 300072,China [2]State Key Laboratory of Earthquake Dynamics,Institute of Geology,China Earthquake Administration,Beijing 100029,China [3]School of Earth Science and Technology,Southwest Petroleum University,Chengdu 610500,China [4]Chongqing Earthquake Agency,Chongqing 401147,China

出　　处：《Acta Geologica Sinica(English Edition)》2024年第4期1051-1063,共13页地质学报（英文版）

基　　金：supported by the National Key Research and Development program of China(Grant No.2021YFC3000604);National Natural Science Foundation of China(Grant Nos.42030305,42272257);sponsored by State Key Laboratory of Earthquake Dynamics,Institute of Geology,China Earthquake Administration(Grant No.LED2022B04)。

摘　　要：The reconstruction of paleo-elevation serves a dual purpose to enhance our comprehension of geodynamic processes affecting terrestrial landforms and to contribute significantly to the interpretation of atmospheric circulation and biodiversity.The oxygen(δ~(18)O_w)and deuterium(δD_w)isotopes in atmospheric precipitation are systematically depleted with the increase of altitude,which are typical and widely applicated paleo-altimeters.The utilization of hydrogen isotope of hydrous silicate minerals within the shear zone system,volcanic glass,and plant leaf wax alkanes offers valuable insights for addressing evaporation and diagenesis.In this paper,we review the principle,application conditions,and influencing factors of the hydrogen isotope paleo-altimeter.In addition,we discuss the feasibility of utilizing this technique for quantitatively estimating the paleo-elevation of the southeastern Tibetan Plateau,where multiple shear zones extend over hundred kilometers parallel to the topographic gradient.

关 键 词：paleo-elevation hydrogen isotope hydrous silicate minerals volcanic glass Tibetan Plateau 

分 类 号：P597[天文地球—地球化学] P531[天文地球—地质学]