Prolonged Mantle Modification beneath the North China Craton: Evidence from Contrasting Mafic Dykes in Jiaodong Peninsula

Prolonged Mantle Modification beneath the North China Craton: Evidence from Contrasting Mafic Dykes in Jiaodong Peninsula

The nature of lithosphere mantle beneath North China Craton (NCC) has been changed during the Mesozoic. We investigated the mafic dykes in Jiaodong to put constraint on the origin of them and reveal the mantle evolution of the NCC. Zircons from Kunyushan and Nansu mafic dykes give concordia U−Pb age...

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Veröffentlicht in:Journal of earth science (Wuhan, China) China), 2023-08, Vol.34 (4), p.1150-1164
Hauptverfasser: Dong, Leilei, Yang, Zhiming, Song, Mingchun
Format: Artikel
Sprache:eng
Schlagworte:
Biogeosciences
Cratons
Earth and Environmental Science
Earth mantle
Earth Sciences
Enrichment
Geochemistry
Geology
Geotechnical Engineering & Applied Earth Sciences
Lithosphere
Magnesium oxide
Mesozoic
Outliers (statistics)
Rare earth elements
Rock intrusions
Zircon
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Zusammenfassung:The nature of lithosphere mantle beneath North China Craton (NCC) has been changed during the Mesozoic. We investigated the mafic dykes in Jiaodong to put constraint on the origin of them and reveal the mantle evolution of the NCC. Zircons from Kunyushan and Nansu mafic dykes give concordia U−Pb ages of 114.9 and 52.8 Ma, respectively. The Kunyushan mafic dyke has high MgO (∼8.0 wt.%) and Cr (>380 ppm) but lower FeO (
ISSN:1674-487X
1867-111X
DOI:10.1007/s12583-022-1737-7