4.3 Article

Intracontinental subduction: a possible mechanism for the Early Palaeozoic Orogen of SE China

Journal

TERRA NOVA
Volume 21, Issue 5, Pages 360-368

Publisher

WILEY
DOI: 10.1111/j.1365-3121.2009.00888.x

Keywords

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Funding

  1. National Natural Science Foundation of China [40634022]
  2. Chinese Academy of Sciences [KZCX1-YW-15-1]
  3. State Key Laboratory of Lithosphere Tectonic Evolution, Institute of Geology and Geophysics, Academy of Sciences, Beijing

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The Early Palaeozoic Orogen of SE China consists of three litho-tectonic elements, from top to bottom: a sedimentary Upper Unit, a metamorphic Lower Unit and a gneissic basement. The boundaries between these units are flat lying, south directed, ductile decollements. The lower one is coeval with an amphibolite facies metamorphism (M1). The belt is reworked by migmatite-granite domes, high-temperature metamorphism (M2) and granitic plutons related to post-orogenic crustal melting. We date here the syn-M1 ductile shearing at 453 +/- 7 Ma by U-Th/Pb method on monazite. Previous ages and our new

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