Petrogenesis of rhyolite at Kalatage in the Eastern Tianshan, Northwest China: Evidences from geochemistry, zircon U-Pb geochronology, and Hf isotopes

2018 ◽  
Vol 53 ◽  
pp. 163-173 ◽  
Author(s):  
Xiaohui Sun ◽  
Yan Luan ◽  
Haoshu Tang ◽  
Xijuan Tan
Keyword(s):  
Northwest China ◽  
Hf Isotopes ◽  
Eastern Tianshan

Peraluminous granitoid magmatism from isotopically depleted sources: The case of Jing'erquanbei pluton in Eastern Tianshan, Northwest China

2018 ◽  
Vol 55 (1) ◽  
pp. 117-132 ◽  
Author(s):  
M.N. Muhtar ◽  
Chang‐Zhi Wu ◽  
M. Santosh ◽  
Ru‐Xiong Lei ◽  
Yonggan Feng ◽  
...  
Keyword(s):  
Northwest China ◽  
Granitoid Magmatism ◽  
Eastern Tianshan

scholarly journals The Metallogeny of the Lubei Ni–Cu–Co Sulfide Deposit in Eastern Tianshan, NW China: Insights From Petrology and Sr–Nd–Hf Isotopes

2021 ◽  
Vol 9 ◽  
Author(s):  
Ping Li ◽  
Ting Liang ◽  
Yonggang Feng ◽  
Tongyang Zhao ◽  
Jiangtao Tian ◽  
...  
Keyword(s):  
Lithospheric Mantle ◽  
Crustal Contamination ◽  
Primary Magma ◽  
Phase Iii ◽  
Hf Isotopes ◽  
Cobalt Sulfide ◽  
Geodynamic Setting ◽  
Sulfide Deposit ◽  
Eastern Tianshan ◽  
Clastic Rocks

The Lubei Ni–Cu–Co deposit situated in western segment of the Huangshan-Jing’erquan mafic–ultramafic rock belt in eastern Tianshan of the Central Asian Orogenic Belt (CAOB). The estimated reserve is approximately 9.11 million tons of ore resources with average grades of 0.82 wt% Ni, 0.52 wt% Cu, and 0.03 wt% Co. The Lubei intrusion is mainly composed of gabbro (phase I), peridotite (phase II), pyroxene peridotite (phase III), olivine pyroxenite (phase IV), and diorite (phase V), which intruded into the early Carboniferous tuffaceous clastic rocks. Zircon Laser Ablation–Inductively Coupled Plasma–Mass Spectrometry (LA–ICP–MS) U–Pb age of the diorite (phase V) from the edge of the intrusion is interpreted as the top-limit metallogenic age, which is consistent with the formation ages of the Huangshan and Xiangshan Ni–Cu deposits in eastern Tianshan. The roughly parallel rare earth element (REE) curves of the Lubei intrusion indicate the magma originated from a homologous source. The slightly enriched large ion lithophile elements (LILE) are compared to high field strength elements (HFSE) with negative Nb and Ta anomalies show that the Lubei intrusion has arc-affiliate geochemical characteristics. The Sr–Nd–Hf isotopes show that the magma was derived from depleted lithospheric mantle, while suffering 4–10% lower crustal contamination with slight contamination of the upper crust. Based on a comprehensive conservation of regional geological, geochemical, and geochronological evidence, the primary magma of the Lubei intrusion was identified that it was derived from the partial melting of metasomatized lithospheric mantle previously modified by subduction events. The Lubei nickel–copper–cobalt sulfide deposit was formed after the primary magma experienced fractional crystallization, crustal contamination, and sulfide segregation in a post-collisional extensional geodynamic setting after the closure of the Kanggur ocean basin in the early Permian.

Triassic magmatic reactivation in Eastern Tianshan, NW China: Evidence from geochemistry and zircon U-Pb-Hf isotopes of granites

2017 ◽  
Vol 145 ◽  
pp. 446-459 ◽  
Author(s):  
Xiaoran Zhang ◽  
Guochun Zhao ◽  
Min Sun ◽  
Yigui Han ◽  
Qian Liu
Keyword(s):  
Hf Isotopes ◽  
Eastern Tianshan ◽  
Nw China

Divergent responses to climate factors in the radial growth of Larix sibirica in the eastern Tianshan Mountains, northwest China

Trees ◽  
2015 ◽  
Vol 29 (6) ◽  
pp. 1673-1686 ◽  
Author(s):  
Liang Jiao ◽  
Yuan Jiang ◽  
Wen-Tao Zhang ◽  
Ming-Chang Wang ◽  
Ling-Nan Zhang ◽  
...  
Keyword(s):  
Radial Growth ◽  
Northwest China ◽  
Tianshan Mountains ◽  
Larix Sibirica ◽  
Climate Factors ◽  
Eastern Tianshan
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