Major and trace element studies on garnets from Palaeozoic kimberlite-borne mantle xenoliths and megacrysts from the North China craton

2000 ◽  
Vol 43 (4) ◽  
pp. 423-430 ◽  
Author(s):  
Hongfu Zhang ◽  
M. A. Menzies ◽  
Fengxiang Lu ◽  
Xinhua Zhou
Keyword(s):  
Trace Element ◽  
North China Craton ◽  
North China ◽  
Mantle Xenoliths ◽  
The North

Mapping lithospheric boundaries using Os isotopes of mantle xenoliths: An example from the North China Craton

2011 ◽  
Vol 75 (13) ◽  
pp. 3881-3902 ◽  
Author(s):  
Jingao Liu ◽  
Roberta L. Rudnick ◽  
Richard J. Walker ◽  
Shan Gao ◽  
Fu-yuan Wu ◽  
...  
Keyword(s):  
North China Craton ◽  
North China ◽  
Mantle Xenoliths ◽  
The North ◽  
Os Isotopes

Secular evolution of the lithospheric mantle beneath the northern margin of the North China Craton: Insights from zoned olivine xenocrysts in Early Cretaceous basalts

2020 ◽  
Vol 132 (11-12) ◽  
pp. 2353-2366
Author(s):  
Yao Xu ◽  
Hongfu Zhang
Keyword(s):  
Early Cretaceous ◽  
North China Craton ◽  
Lithospheric Mantle ◽  
North China ◽  
Mantle Xenoliths ◽  
Liaoning Province ◽  
Northern Margin ◽  
Secular Evolution ◽  
The North ◽  
Peridotitic Mantle

Abstract Abundant zoned olivine xenocrysts from Early Cretaceous basalts of the Yixian Formation in western Liaoning Province, China, contain critical information about the nature and evolution of the lithospheric mantle of the northern North China Craton. These olivine xenocrysts are large (600–1600 µm), usually rounded and embayed, with well-developed cracks. Their cores have high and uniform forsterite (Fo) contents (88–91), similar to the peridotitic olivine entrained by regional Cenozoic basalts. Their rims have much lower Fo contents (74–82), comparable to phenocrysts (72–81) in the host basalts. These characteristics reveal that the zoned olivine has been disaggregated from mantle xenoliths and thus can be used to trace the underlying lithospheric mantle at the time of basaltic magmatism. The olivine cores have high oxygen isotope compositions (δ18OSMOW = 5.9–7.0‰) relative to the normal mantle value, suggesting that the Early Cretaceous lithospheric mantle was enriched and metasomatized mainly by melts/fluids released from subducted oceanic crust that had experienced low-temperature hydrothermal alteration. Preservation of zoned olivine xenocrysts in the Early Cretaceous basalts indicates that olivine-melt/fluid reaction could have been prevalent in the lithospheric mantle as an important mechanism for the transformation from old refractory (high-Mg) peridotitic mantle to young, fertile (low-Mg), and enriched lithospheric mantle during the early Mesozoic.

Mesozoic lithosphere destruction beneath the North China Craton: evidence from major-, trace-element and Sr–Nd–Pb isotope studies of Fangcheng basalts

2002 ◽  
Vol 144 (2) ◽  
pp. 241-254 ◽  
Author(s):  
Hong-Fu Zhang ◽  
Min Sun ◽  
Xin-Hua Zhou ◽  
Wei-Ming Fan ◽  
Ming-Guo Zhai ◽  
...  
Keyword(s):  
Trace Element ◽  
North China Craton ◽  
North China ◽  
Pb Isotope ◽  
The North ◽  
Isotope Studies

In-situ trace element and Sr isotopic compositions of mantle xenoliths constrain two-stage metasomatism beneath the northern North China Craton

Lithos ◽  
2017 ◽  
Vol 288-289 ◽  
pp. 338-351 ◽  
Author(s):  
Dan Wu ◽  
Yongsheng Liu ◽  
Chunfei Chen ◽  
Rong Xu ◽  
Mihai N. Ducea ◽  
...  
Keyword(s):  
Trace Element ◽  
North China Craton ◽  
North China ◽  
Mantle Xenoliths ◽  
Two Stage ◽  
Isotopic Compositions
Sign in / Sign up

Export Citation Format

Share Document