Origin of dyke swarms by mixing of metasomatized subcontinental lithospheric mantle-derived and lower crustal magmas in the Guocheng fault belt, Jiaodong Peninsula, North China Craton

2012 ◽  
Vol 48 (5) ◽  
pp. 516-530 ◽  
Author(s):  
Jun Tan ◽  
Jun-Hao Wei ◽  
Wen-Jie Shi ◽  
Bo Feng ◽  
Yan-Jun Li ◽  
...  
Keyword(s):  
North China Craton ◽  
Lithospheric Mantle ◽  
North China ◽  
Subcontinental Lithospheric Mantle ◽  
Jiaodong Peninsula ◽  
Fault Belt ◽  
Dyke Swarms ◽  
Lower Crustal

Early cretaceous lamprophyre dyke swarms in Jiaodong Peninsula, eastern North China Craton, and implications for mantle metasomatism related to subduction

Lithos ◽  
2020 ◽  
Vol 368-369 ◽  
pp. 105593
Author(s):  
Xiang Wang ◽  
Zaicong Wang ◽  
Huai Cheng ◽  
Stephen Foley ◽  
Le Xiong ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
North China Craton ◽  
North China ◽  
Mantle Metasomatism ◽  
Jiaodong Peninsula ◽  
Dyke Swarms

Early Devonian ultrapotassic magmatism in the North China Craton: geochemical and isotopic evidence for subcontinental lithospheric mantle metasomatism by subducted sediment-derived fluids

2019 ◽  
Vol 158 (1) ◽  
pp. 158-174 ◽  
Author(s):  
Xiaolu Niu ◽  
Yildirim Dilek ◽  
Fei Liu ◽  
Guangying Feng ◽  
Jingsui Yang
Keyword(s):  
North China Craton ◽  
Lithospheric Mantle ◽  
North China ◽  
Mantle Metasomatism ◽  
Alkaline Magmatism ◽  
Subcontinental Lithospheric Mantle ◽  
Early Devonian ◽  
Isotopic Compositions ◽  
The North

AbstractWe report new U–Pb zircon age data, zircon in situ oxygen isotope, mineral chemistry, whole-rock geochemistry and Sr–Nd isotopic compositions from the Early Devonian ultrapotassic Gucheng pluton in the North China Craton, and discuss its petrogenesis. The Gucheng pluton is exposed in the northern part of the North China Craton and forms a composite intrusion, consisting of K-feldspar-bearing clinopyroxenite, clinopyroxene-bearing syenite and alkali-feldspar syenite. Mineral phases in these lithologies include clinopyroxene (Wo43–48En19–35Fs18–38), sanidine (An0Ab3–11Or89–97), and subordinate titanite, andradite and Na-feldspar. These rocks show homogeneous Sr but variable Nd isotopic compositions, and have relatively high zircon in situ oxygen isotopes (δ18O = 5.2–6.7). The Gucheng plutonic rocks formed through fractional crystallization and accumulation from ultrapotassic magmas, which were originated from partial melting of metasomatic vein systems in the subcontinental lithospheric mantle of the North China Craton. These vein networks developed as a result of the reactions of fluids derived from subducted pelitic sediments on the downgoing Palaeo-Asian ocean floor with the enriched, subcontinental lithospheric mantle peridotites. Sensitive high-resolution ion microprobe (SHRIMP) U–Pb zircon dating has revealed a crystallization age of 415 Ma for the timing of the emplacement of the Gucheng pluton that marks the early stages of alkaline magmatism associated with the Andean-type continental margin evolution along the northern edge of the North China Craton facing the Palaeo-Asian Ocean.

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