Late Mesozoic mafic magmatism from the North China Block: constraints on chemical and isotopic heterogeneity of the subcontinental lithospheric mantle

2007 ◽  
Vol 280 (1) ◽  
pp. 77-100 ◽  
Author(s):  
W. Fan ◽  
F. Guo ◽  
Y. Wang ◽  
H. Zhang
Keyword(s):  
Lithospheric Mantle ◽  
North China ◽  
Subcontinental Lithospheric Mantle ◽  
North China Block ◽  
Mafic Magmatism ◽  
Late Mesozoic ◽  
Isotopic Heterogeneity ◽  
The North

scholarly journals The Mesozoic Tectonic Dynamics and Chronology in the Eastern North China Block

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Quanlin Hou ◽  
Qing Liu ◽  
Hongyuan Zhang ◽  
Xiaohui Zhang ◽  
Jun Li
Keyword(s):  
North China ◽  
Late Triassic ◽  
Upper Crust ◽  
North China Block ◽  
Late Mesozoic ◽  
Detachment Faults ◽  
The North ◽  
North Part ◽  
Strong Compression ◽  
Tectonic System

Mesozoic tectonic events in different areas of the eastern North China Block (NCB) show consistency in tectonic time and genesis. The Triassic collision between NCB and Yangtze results in the nearly S-N strong compression in the Dabie, Jiaodong, and west Shandong areas in Middle Triassic-Middle Jurassic. Compression in the Yanshan area in the north part of NCB was mainly affected by the collision between Mongolia Block and NCB, as well as Siberia Block and North China-Mongolia Block in Late Triassic-Late Jurassic. However, in the eastern NCB, compressive tectonic system in Early Mesozoic was inversed into extensional tectonic system in Late Mesozoic. The extension in Late Mesozoic at upper crust mainly exhibits as extensional detachment faults and metamorphic core complex (MCC). The deformation age of extensional detachment faults is peaking at 120–110 Ma in Yanshan area and at 130–110 Ma in the Dabie area. In the Jiaodong area eastern to the Tan-Lu faults, the compression thrust had been continuing to Late Mesozoic at least in upper crust related to the sinistral strike slipping of the Tan-Lu fault zone.The extensional detachments in the eastern NCB would be caused by strong crust-mantle action with upwelling mantle in Late Mesozoic.

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