Role of asthenosphere and lithosphere in the genesis of the Early Permian Huangshan mafic-ultramafic intrusion in the Northern Tianshan, NW China

	Role of asthenosphere and lithosphere in the genesis of the Early Permian Huangshan mafic-ultramafic intrusion in the Northern Tianshan, NW China
	Yu-Feng Deng; Xie-Yan Song; Pete Hollings; Taofa Zhou; Feng Yuan; Lie-Meng Chen; Dayu Zhang
通讯作者	Xie-Yan Song
	2015
发表期刊	Lithos
卷号	227 期号:1 页码:241-254
摘要	The Huangshan mafic-ultramafic intrusion hosts a large Ni-Cu sulfide deposit and is situated in the Northern Tianshan at the southern margin of the Central Asian Orogenic Belt (CAOB). The Early Permian intrusion consists of lherzolite, websterite,gabbronorite, gabbro and diorite. The Huangshan deposit contains similar to 80.4 Mt of ore grading 0.54 wt.% Ni and 0.3 wt.% Cu and is the second largest magmatic sulfide deposit in Northern Xinjiang, China. The Huangshan intrusive rocks are enriched in large ion lithophile elements and depleted in high field strength elements relative to N-MORB, with low Nb/U (1.53-5.27) and high Ba/Nb (1.68-121) ratios, indicating that the primary magma was derived from partial melting of a metasomatized mantle source. The mafic-ultramafic rocks in the Northern Tianshan are characterized by lower Ca contents (<1000 ppm) in olivine, more depleted Nb and Ta, lower Nb/U ratios, and higher epsilon Nd-(t) than those of the Tarim mafic-ultramafic intrusive rocks and ocean island basalts (OIB). The range of epsilon Nd-(t) values of the mafic-ultramafic rocks in the Northern Tianshan over time suggests a greater role for upwelling asthenospheric mantle in the younger rocks. This implies that they were produced by interactions between metasomatized lithospheric mantle and depleted asthenospheric melts rather than a mantle plume. The linear distribution of Permian mafic-ultramafic intrusions along the Kangguer fault in the Northern Tianshan suggests that slab breakoff played a key role in the genesis of the mantle-derived magma in a syn-collisional setting.
学科领域	矿床地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/6033
专题	矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文矿床地球化学国家重点实验室
通讯作者	Xie-Yan Song
推荐引用方式 GB/T 7714	Yu-Feng Deng,Xie-Yan Song,Pete Hollings,et al. Role of asthenosphere and lithosphere in the genesis of the Early Permian Huangshan mafic-ultramafic intrusion in the Northern Tianshan, NW China[J]. Lithos,2015,227(1):241-254.
APA	Yu-Feng Deng.,Xie-Yan Song.,Pete Hollings.,Taofa Zhou.,Feng Yuan.,...&Dayu Zhang.(2015).Role of asthenosphere and lithosphere in the genesis of the Early Permian Huangshan mafic-ultramafic intrusion in the Northern Tianshan, NW China.Lithos,227(1),241-254.
MLA	Yu-Feng Deng,et al."Role of asthenosphere and lithosphere in the genesis of the Early Permian Huangshan mafic-ultramafic intrusion in the Northern Tianshan, NW China".Lithos 227.1(2015):241-254.

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