Early Paleozoic volcanic rocks with <scp>VMS</scp> mineralization from eastern Tianshan Orogen: Implication for tectonic evolution

Deng, Xiao‐Hua; Wang, Jingbin; Santosh, M.; Wang, Yuwang; Long, Lingli; Zhang, Hui‐Qiong; Yang, Liya; Xu, Ji‐Feng; Chen, Xi; Chen, Lei

doi:10.1002/gj.3046

Cited by 18 publications

(11 citation statements)

References 38 publications

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“…450–440 Ma of succession of basaltic andesite, tuff, and volcanic breccia overlain by ca. 440–420 Ma of dacite (Deng et al, ). The contact between the dacite and underlying units hosts Honghai (Huangtupo) VMS deposit (Deng et al, , ).…”

Section: Regional Geologymentioning

confidence: 99%

“…440–420 Ma of dacite (Deng et al, ). The contact between the dacite and underlying units hosts Honghai (Huangtupo) VMS deposit (Deng et al, , ). The Daliugou Formation is unconformably overlain by the Hongliuxia Formation that consists of sandstone and siltstone at the base succeeded by calcareous siltstone, fine‐grained sandstone, and limestone.…”

Section: Regional Geologymentioning

confidence: 99%

“…The Silurian granites consist of tonalite, granodiorite, and monzogranite with U–Pb zircon ages of ca. 430–426 Ma in the south‐eastern part of the district (Deng et al, ). Porphyritic quartz diorite from the Yudai porphyry Cu deposit yields a U–Pb zircon age of 432 ± 3 Ma (L. Chen et al, ).…”

Section: Regional Geologymentioning

confidence: 99%

“…There are many documented studies on Ordovician, Silurian, and Carboniferous magmatic rocks in the eastern Tianshan interpreted as oceanic arcs developed during subduction–accretion processes (e.g., L. Chen et al, ; Deng et al, ; Ma, Chen, Wang, & Yan, ; Shen, Pan, & Dong, ; Y. F. Wang, Chen, et al, ). However, the Devonian magmatic rocks in the Dananhu Belt are poorly documented (Song, Li, Li, Wang, & Wang, ).…”

Section: Introductionmentioning

confidence: 99%

“…Many Palaeozoic magmatic rocks have been recently identified in the area making it important in understanding the Palaeozoic evolution of eastern Tianshan Orogen. Several Cu‐polymetallic deposits have been discovered in the Kalatag area, including the Honghai (Huangtupo) VMS Cu–Zn, Hongshi hydrothermal vein Cu, Yudai porphyry Cu, and Xierqu skarn Fe–Cu deposits (L. Chen et al, , ; Deng et al, , ; Huang et al, ; Q. G. Mao et al, ; Q. G. Mao, Fang, Wang, Wang, & Wang, ; Y. Sun et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Petrogenesis of Middle Devonian diorite at the Xierqu Fe–Cu deposit in the Kalatag district, eastern Tianshan, NW China

et al. 2019

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Xierqu is a skarn Fe–Cu deposit associated with porphyritic diorite, in the Kalatag district of eastern Tianshan, China. The diorite yields a sensitive high‐resolution ion microprobe U–Pb zircon date of 391 ± 3 Ma interpreted as its age of emplacement. Major element geochemistry shows that the diorite is a calc‐alkaline assaying 16.7–19 wt.% of Al2O3, with Mg# values of 56.8–67.1, and Al2O3/(CaO + Na2O + K2O) (A/CNK) values of 0.55–0.94. Trace element characteristics of the diorite show that it is enriched in Ba, K, and Sr and depleted in Nb, Ta, and Ti, with a positive Eu (1.18–1.44) anomaly and high Sr/Y and La/Yb ratios. Sr–Nd isotopic analyses yielded positive εNd(t) values ranging from 7.1 to 9.8 with low initial 87Sr/86Sr ratios of 0.703806 to 0.703856. These geochemical and isotopic characteristics indicate that the diorite is adakite‐like emplaced in an island‐arc setting and resulted from partial melting of subducted oceanic crust in a mantle wedge during the Devonian.

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Section: Regional Geologymentioning

confidence: 99%

Section: Regional Geologymentioning

confidence: 99%

Section: Regional Geologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Petrogenesis of Middle Devonian diorite at the Xierqu Fe–Cu deposit in the Kalatag district, eastern Tianshan, NW China

et al. 2019

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Petrogenesis of Early Devonian granodiorite in the Xiaobaishitou W–(Mo) ore district of East Tianshan, Northwest China, and tectonic implications: U–Pb geochronological, geochemical, and Sr–Nd isotopic evidence

Yang

Zhang

2019

Geological Journal

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The Palaeozoic intrusions of East Tianshan, China, are important for understanding the tectonic evolution of the Central Asian Orogenic Belt. We investigated one such Devonian granodiorite, located in the Xiaobaishitou W-(Mo) ore district of the Central Tianshan Block, to constrain its petrogenesis and geodynamic setting. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) zircon U-Pb dating indicates that the granodiorite emplaced at 407 Ma and can be classified as an I-type granite based on its mineralogy and whole-rock geochemistry. The granodiorite also exhibits moderate Mg # values, high MgO, Ni, and CaO contents, depleted Ti and Nb concentrations, and negative ε Nd (t) values (−8.32 to −3.73), indicating a magma derived from the mantle but contaminated with ancient crustal rock. Mineral chemistry, saturation thermometry, and whole-rock Fe 2 O 3 /FeO ratios indicate crystallisation temperatures of 654-822°C, pressures of 1.8-2.1 kbar, and oxygen fugacity of ≤NNO for the granodiorite stock. We compare granodiorite geochemical data to those from other recent studies of Palaeozoic intrusive rocks in East Tianshan and infer that the formation of the Early Devonian granodiorite in the East Tianshan was due to a southdipping subduction of the Kanggur Ocean plate toward the Central Tianshan Block.

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Palaeozoic tectonic evolution and magmatism in the Kalatag area, East Tianshan, NW China: Evidence from the geochronology and geochemistry of intrusive rocks

et al. 2022

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The Kalatag area contains many intrusive rocks of Late Ordovician to Permian age and hosts polymetallic deposits that are associated with magmatism. It is a key area for revealing the nature and genesis of the Palaeozoic rocks in East Tianshan. The intrusive rocks of different periods preserve useful information regarding the tectonomagmatic history of the Kalatag area. Zircon U–Pb geochronological, Hf isotopic, Sr–Nd isotopic, and whole‐rock geochemical analyses are reported for the intrusions from the Meiling ore district, Yudai ore district, and Kalatag pluton to reveal their petrogenesis and geodynamic setting. The LA–ICP–MS zircon U–Pb analyses suggest that the quartz diorite from the Kalatag pluton formed at 420–432 Ma, and the quartz diorite porphyry from the Yudai ore district formed at 436–439 Ma. The zircons from the quartz diorite and quartz diorite porphyry mainly yield high εHf(t) values (12.2–16.2) and very young Hf model ages (TDM = 0.41–0.56 Ga; TDMC = 0.49–0.56 Ga), which are consistent with a depleted mantle origin. The geochemical characteristics of the granites and quartz diorites from the Kalatag pluton and diorite porphyry from the Meiling ore district exhibit typical subduction‐related features such as enrichment in LILEs and LREEs and depletion in HFSEs. These diorites have moderate Mg# (30–47), positive εNd(t) values (4.2–5.6), and young Nd model ages (0.62–0.83 Ga), which are consistent with a depleted mantle origin that is accompanied by limited crustal assimilation. Based on the regional geology and geochemical evidence and previous studies, the Ordovician–Carboniferous rocks from the Kalatag area are considered to have formed in an island‐arc setting and were probably formed by a subduction event.

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Early Paleozoic volcanic rocks with VMS mineralization from eastern Tianshan Orogen: Implication for tectonic evolution

Cited by 18 publications

References 38 publications

Petrogenesis of Middle Devonian diorite at the Xierqu Fe–Cu deposit in the Kalatag district, eastern Tianshan, NW China

Petrogenesis of Middle Devonian diorite at the Xierqu Fe–Cu deposit in the Kalatag district, eastern Tianshan, NW China

Petrogenesis of Early Devonian granodiorite in the Xiaobaishitou W–(Mo) ore district of East Tianshan, Northwest China, and tectonic implications: U–Pb geochronological, geochemical, and Sr–Nd isotopic evidence

Palaeozoic tectonic evolution and magmatism in the Kalatag area, East Tianshan, NW China: Evidence from the geochronology and geochemistry of intrusive rocks

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