Differential uplift between Beihuaiyang and Dabie orogenic belt |
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Authors: | YANG Kunguang MA Changqian XU Changhai YANG Weiran |
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Institution: | Faculty of Earth Sciences,China University of Geosciences,Wuhan 430074,China |
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Abstract: | Isotope dating, hornblende geobarometer, fission-track analysis and fluid inclusion homogeneous temperature analysis have
been applied to Caledonian, Variscan and Yenshan plutons in Bei Huaiyang (BHY) and Dabie orogenic belt (DOB), and the emplaced
depths and ages of these plutons have been obtained in order to obtain differential uplift time and uplift heights between
BHY and DOB since late Paleozoic era. BHY had experienced three stages of uplift (C1-C2, T-J2, J3-K1) and its total uplift
height is about 10 km, but, DOB had only experienced two stages of uplift (T-J2, J3-K1) and its maximum uplift height is more
than 15 km. BHY uplift occurred mainly before the mid-Jurassic (about 150 Ma), but DOB uplift took place after the mid-Jurassic
(about 150 Ma). |
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Keywords: | Beihuaiyang and Dabie orogenic belt differential uplift isotope dating hornblende geobarometer |
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