Tectonic affinity and reworking of the Archaean Jiaodong Terrane in the Eastern Block of the North China Craton; evidence from LA-ICP-MS U/Pb zircon ages

The Archaean Jiaodong Terrane is located in the southern segment of the Palaeoproterozoic Jiao-Liao-Ji Belt, which separates the Eastern Block of the North China Craton into the Longgang and Langrim blocks. Controversy has long surrounded the issue of whether the Jiaodong Terrane is part of the Nort...

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Bibliographic Details
Published in:Geological magazine 2014-03, Vol.151 (2), p.365-371
Main Authors: Wu Meiling, Wu Meiling, Zhao Guochun, Zhao Guochun, Sun Min, Sun Min, Bao Zhian, Bao Zhian, Tam Pui Yuk, Tam Pui Yuk, He Yanhong, He Yanhong
Format: Article
Language:English
Subjects:
absolute age
Archean
Asia
basement tectonics
China
continental crust
crust
dates
Eastern Block
exotic terranes
Far East
Geochronology
ICP mass spectra
Jiao-Liao-Ji Belt
Jiapdong Terrane
Langrim Block
Longgang Block
mass spectra
metamorphic belts
metamorphic rocks
metamorphism
mineral composition
Neoarchean
nesosilicates
North China Platform
orthosilicates
Paleoproterozoic
petrology
Plate tectonics
Precambrian
Proterozoic
Qixia China
reworking
Shandong China
silicates
spectra
Structural geology
tectonics
terranes
textures
U/Pb
upper Precambrian
zircon
zircon group
Zirconium
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Summary:The Archaean Jiaodong Terrane is located in the southern segment of the Palaeoproterozoic Jiao-Liao-Ji Belt, which separates the Eastern Block of the North China Craton into the Longgang and Langrim blocks. Controversy has long surrounded the issue of whether the Jiaodong Terrane is part of the North China Craton or an exotic terrane. This study presents new zircon U-Pb ages for the major lithologies of the Jiaodong Terrane, and the results indicate that the terrane underwent two main magmatic events at approximately 2.89 Ga and 2.62-2.56 Ga and two metamorphic events at approximately 2.5 Ga and 1.9-1.8 Ga. These ages are consistent with those of other metamorphic complexes in the Eastern Block, suggesting that the Jiaodong Terrane was part of the Neoarchaean basement of the Eastern Block, which was reworked at 1.9-1.8 Ga in association with the development of the Palaeoproterozoic Jiao-Liao-Ji Belt.
ISSN:0016-7568
1469-5081
DOI:10.1017/S0016756813000721