Syn-deformationP-T paths of Xiaoqinling metamorphic core complex |
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Authors: | Shuwen Liu Jinjiang Zhang Yadong Zheng |
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Institution: | (1) Department of Geology, Peking University, 100871 Beijing, China |
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Abstract: | TheP-T paths of the Xiaoqinling metamorphic core complex (XMCC) have been investigated with the Gibbs method by researching the
compositional changing of zoned epidotes which formed during syn-deformation metamorphism. TheseP-T paths indicate that the XMCC had experienced the following thermodynamics processes: firstly, near isobaric falling slightly
in temperature in lower crust; secondly, fast decompression and rising in temperature during extensional uplifting to middle
crust level; and finally, isobaric falling in temperature in middle crust. The upwelling and emplacement of the deep magma
may be a major factor during the uplifting processes of the metamorphic core complex. |
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Keywords: | zoned epidotes Gibbs method P-T paths metamorphic core complex Xiaoqinling |
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