Late Paleoproterozoic rift-related magmatic rocks in the North China Craton: Geological records of rifting in the Columbia supercontinent

Late Paleoproterozoic rift-related magmatic rocks in the North China Craton: Geological records of rifting in the Columbia supercontinent

Late Paleoproterozoic (1.84‒1.62Ga) magmatic rocks including dykes/sills/intrusions and volcanic rocks occur throughout the North China Craton (NCC), which is considered to be part of the Columbia supercontinent by ca. 1.9–1.85Ga. On the basis of petrogeochemical data, these magmatic rocks can be cl...

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Veröffentlicht in:Earth-science reviews 2013-10, Vol.125, p.69-86
Hauptverfasser: Xia, Linqi, Xia, Zuchun, Xu, Xueyi, Li, Xiangmin, Ma, Zhongping
Format: Artikel
Sprache:eng
Schlagworte:
China
Columbia supercontinent
Contamination
Continental rift
Cratons
Dyke swarm
Geochemistry
Geological time
Igneous rocks
Intrusion
Late Paleoproterozoic
Lithosphere
Magma
Niobium
North China Craton
Rocks
volcanic rocks
Volcanism
Volcanoes
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Zusammenfassung:Late Paleoproterozoic (1.84‒1.62Ga) magmatic rocks including dykes/sills/intrusions and volcanic rocks occur throughout the North China Craton (NCC), which is considered to be part of the Columbia supercontinent by ca. 1.9–1.85Ga. On the basis of petrogeochemical data, these magmatic rocks can be classified into three major magma types: HN (Nb/La>0.8, Ce/Nb=1.7‒3, (Th/Nb)N=0.6‒1.2), MN (Nb/La=0.8–0.5, Ce/Nb=3‒5, (Th/Nb)N=0.9‒3.5) and LN (Nb/La
ISSN:0012-8252
1872-6828
DOI:10.1016/j.earscirev.2013.06.004