Geochronology and geochemistry of submarine volcanic rocks in the Yamansu iron deposit, Eastern Tianshan Mountains, NW China: Constraints on the metallogenesis

Hou, Tong; Zhang, Zhaochong; Santosh, M.; Encarnación, John; Zhu, Jiang; Luo, Wenjuan

doi:10.1016/j.oregeorev.2013.03.008

Cited by 143 publications

(58 citation statements)

References 90 publications

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“…The middle member is dominated by felsic tuff, coarse sandstone, and mixtite, intercalated with bioclastic limestone and microcrystalline limestone. The uppermost member contains limestone, with minor tuff and sandstone (Qin et al, 2002;Hou et al, 2014). Some index fossils, such as Arachnolasma, Gigantoprductus, and Yuanophyllum, are present in this layer .…”

Section: Regional Geologymentioning

confidence: 99%

“…As the largest Fe deposit in the arc belt, the Yamansu deposit contains 32 Mt at 51% Fe (Mao et al, 2005). Hou et al (2014) proposed that the Yamansu skarn and other iron-rich ore deposits were formed by interaction of magmatic water and seawater with submarine volcanic and sedimentary rocks of Yamansu Formation. Huang et al (2013) Ar age of ca.…”

Section: Regional Geologymentioning

confidence: 99%

“…Li et al, 2002;Xiao et al, 2004;Li et al, 2006;Hou et al, 2014;Wang et al, 2014), its late Paleozoic tectonic setting is still controversial. Major controversies lie in the subduction polarity and the existence of a back (intra)-arc basin.…”

Section: Implications For Tectonic Settingmentioning

confidence: 99%

“…The widespread Carboniferous granitoids and marine volcanic-sedimentary rocks have attracted significant attention in the last two decades, in large part, because of the economic iron deposits (C.Z. Wu et al, 2006;Zhou et al, 2010;Lei et al, 2013;Hou et al, 2014). However, the geodynamic setting of these Fe deposits and their spatially associated igneous rocks remains controversial relative to the majority of the arc.…”

Section: Introductionmentioning

confidence: 99%

“…However, the geodynamic setting of these Fe deposits and their spatially associated igneous rocks remains controversial relative to the majority of the arc. Various proposed hypotheses include local magmatism and ore formation in a southward subduction-related back-arc basin (Hou et al, 2014), northward subduction-related island arc (Yang et al, 1996;Xiao et al, 2004;Han et al, 2014), and bipolar subduction-related island arc (J.Y. Li et al, 2002Li et al, , 2006Wang et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Geochronology and geochemistry of igneous rocks in the Bailingshan area: Implications for the tectonic setting of late Paleozoic magmatism and iron skarn mineralization in the eastern Tianshan, NW China

et al. 2016

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Section: Regional Geologymentioning

confidence: 99%

Section: Regional Geologymentioning

confidence: 99%

Section: Implications For Tectonic Settingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Geochronology and geochemistry of igneous rocks in the Bailingshan area: Implications for the tectonic setting of late Paleozoic magmatism and iron skarn mineralization in the eastern Tianshan, NW China

et al. 2016

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

et al. 2017

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The Early Paleozoic volcanic rocks of Daliugou Formation at the southern margin of the Turpan‐Hami Basin in the eastern Tianshan Orogen host important volcanogenic massive sulfide (VMS) deposits. Here, we report zircon U–Pb ages of dacite and tuff from the hangingwall and footwall of the VMS deposit, and granodiorite that intruded the volcanics. Our data reveal that the dacite crystallized at 441.4 ± 2.6 Ma and carry older xenocrysts of 2,664, 1,854, and 1,074 Ma. Zircons in the intensively altered tuff crystallized at 440.4 ± 2.9 Ma, with inherited grains of 2,517.4 ± 31.9, and 782.9 ± 11.1 Ma. Zircons in the granodiorite yield a weighted mean age of 430.0 ± 1.7 Ma. The volcanics in the Daliugou Formation evolved from basaltic andesite (>450 Ma) and tuff (450–440 Ma) to dacitic lava (440–420 Ma). We envisage a subduction‐related tectonic setting for the Daliugou Formation rocks when the eastern Kalatag area transformed from an island arc before 450 Ma, through back‐arc basin during 450–440 Ma, to island arc during 440–420 Ma.

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Formation age and geodynamic setting of the Neoproterozoic Shalong iron formation in the Central Tianshan, NW China: Constraints from zircon U–Pb dating, geochemistry, and Hf–Nd isotopes of the host rocks

Lei

Feng

et al. 2018

Geological Journal

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The recently discovered Shalong iron deposit in the Central Tianshan with a reserve of 14 Mt of iron at 25–30 wt.% Fe shows the typical iron formation geological characteristics: The host rocks are mainly metamorphosed volcanic rocks including quartz hornblende schist, mica quartz schist, and plagioclase amphibolite; the iron orebodies are stratiform and bedded, indicative of strata‐controlled deposits; metallic minerals are dominated by magnetite with haematite and ilmenite in minor quantities, whereas gangue minerals are quartz, amphibole, chloritoid, and plagioclase; and ore textures are banded and laminated. Here, we present LA‐ICP‐MS zircon U–Pb ages, whole‐rock geochemistry, Sm–Nd isotope, and zircon Lu–Hf isotope analyses on the host rocks in order to constrain the timing and geodynamic setting of the deposit. The geochemical characteristics, Sm–Nd isotope, and zircon Lu–Hf isotope compositions of the host rocks indicate that their protoliths were likely basic and felsic volcanic rocks. The bimodal kind rock types, the juvenile Nd–Hf isotopic characters, and the within‐plate trace element geochemical features of the host rocks together indicate that these rocks formed in a rift‐like extensional setting. Zircon U–Pb dating of the host rock interlayer suggests that the Shalong iron formation was formed in the Neoproterozoic (ca. 760 Ma). Combined with geological characteristics, close association with meta‐volcanic rocks, absence of glacial deposits, and within‐plate geochemical and juvenile isotopic signatures of the host rocks, the Shalong iron deposit is interpreted to be an Algoma‐type Neoproterozoic iron formation. The formation of this deposit can be linked to rift‐like volcanic activities related to the breakup of the Rodinia supercontinent. Our results in conjunction with previous studies suggest that the Central Tianshan should be related to the breakup of Rodinia, as indicated by the Neoproterozoic rift‐related igneous events of the Central Tianshan.

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Geochronology and geochemistry of submarine volcanic rocks in the Yamansu iron deposit, Eastern Tianshan Mountains, NW China: Constraints on the metallogenesis

Cited by 143 publications

References 90 publications

Geochronology and geochemistry of igneous rocks in the Bailingshan area: Implications for the tectonic setting of late Paleozoic magmatism and iron skarn mineralization in the eastern Tianshan, NW China

Geochronology and geochemistry of igneous rocks in the Bailingshan area: Implications for the tectonic setting of late Paleozoic magmatism and iron skarn mineralization in the eastern Tianshan, NW China

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

Formation age and geodynamic setting of the Neoproterozoic Shalong iron formation in the Central Tianshan, NW China: Constraints from zircon U–Pb dating, geochemistry, and Hf–Nd isotopes of the host rocks

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