Paleozoic intrusive rocks in the Nalati mountain range (NMR), southwest Tianshan: Geodynamic evolution based on petrology and geochemical studies

Zhang, Huichao; Zhu, Yongfeng; Feng, Wanyi; Tan, Yunlong; An, Fang; Zheng, Jianping

doi:10.1007/s12583-016-0922-1

Cited by 23 publications

(6 citation statements)

References 68 publications

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“…2. Geological research of the Nalati Range is limited by three to four directions, which are far from always interconnected: a) petrological, geochemical characteristics and U-Pb dating of intrusive massifs (Gao et al, 2009;Gou et al, 2015Gou et al, , 2012Gou and Zhang, 2016;Long et al, 2011;Xu et al, 2013;Zhang et al, 2017), rarer volcanics (Qian et al, 2009;Xia et al, 2004); b) structural position, petrological characteristics, and isotopic dating of eclogites and blueschists (Du et al, 2014;Lin et al, 2009;Wang et al, 2010); c) detailed structural and microstructural studies of tectonites and metamorphic complexes carried out at local test sites (Charvet et al, 2011;de Jong et al, 2009;Lin et al, 2009;Wang et al, 2010); d) U-Pb dating of detrital zircons (Ren et al, 2011;Xia et al, 2014b).…”

Section: Methodological Approaches To the Generalization Of Initial Datamentioning

confidence: 99%

“…The situation with the identification of the Middle and Northern Tianshan complexes in Xinjiang region is much more uncertain. A number of geologists argue in favor of slight penetration of the Middle Tianshan into the territory of China, where it soon wedges out, and continuation of the structures of the Northern Tianshan, together with the Balkhash-Yili belt in the Yili-Central Tianshan block on the territory of China (Alexeiev et al, 2019(Alexeiev et al, , 2015Burtman, 2006;Gou et al, 2015Gou et al, , 2012Gou and Zhang, 2016;Windley et al, 2007;Xia et al, 2014a;Xiao et al, 2013;Zhang et al, 2017). Some other researchers are of the opinion that the North Nalati Fault is the continuation of the Nikolaev Line in the east and that the Chinese Central Tianshan is an analogue of the Middle Tianshan.…”

Section: Main Tectonic Units Of the Regionmentioning

confidence: 99%

“…Lomize proposed to take the suture of the Terskey (Sayak) paleoocean as the "Most Important Structural Line of Tianshan" (Lomize, 1994). It is this interpretation that appeals to many Xinjiang researchers and is reflected in their tectonic schemes (Gou et al, 2015(Gou et al, , 2012Gou and Zhang, 2016;Qian et al, 2009;Wang et al, 2010Wang et al, , 2020Zhang et al, 2017), although the boundary between the Middle Paleozoic marine deposits of the Middle Tianshan and the grey-colored and subsequent red-colored continental deposits of the Northern Tianshan remains a stable element of the Paleozoic structure of the region (Alexeiev et al, 2017;Khristov, 1970;Mikolaichuk et al, 2020).…”

Section: Main Tectonic Units Of the Regionmentioning

confidence: 99%

“…2). Researchers of the Nalati Range, based on the histograms of the distribution of uranium/lead dates, identify a single family of Silurian-Early Devonian granitoids for this region (Huang et al, 2020;Zhang et al, 2017).…”

Section: 22mentioning

confidence: 99%

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Correlation of geological complexes of the Khan-Tengri Mountain massif

Mikolaichuk¹,

Apayarov²,

Gordeev³

2022

Preprint

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Researchers of the border regions of Xinjiang and the Central Asian countries are actively discussing two alternative models for the relationships between the main structural units of the Tianshan mountains. Most researchers believe that the Kyrgyz Middle Tianshan wedges out to the east along the Atbashi-Inylchek-Nalati marginal fault. According to the second hypothesis, the structures of the Middle Tianshan continue within the range Nalati where they are described as Chinese Central Tianshan. Comparing the characteristics of the Paleozoic and Proterozoic sedimentary, volcanogenic, intrusive, and metamorphic formations of these regions leads us to the conclusion that the structural units of the Kyrgyz Middle and most of the Northern Tianshan, including the superimposed Middle-Late Paleozoic troughs, are not continued into China, but are successively cut along the echelon system of conjugated strike-slip faults, united by us into the Frontal Tianshan Dextral Strike-slip (FTDS). And only the northern segment of the Issyk-Kul massif can be considered as an analogue of the Chinese Central Tianshan, displaced along the FTDS to the northwest for a distance of at least 80 km. Therefore, adjacent geological complexes are eroded along the FTDS like the oblique boundaries of convergent lithospheric plates are tectonic eroded.

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Section: Methodological Approaches To the Generalization Of Initial Datamentioning

confidence: 99%

Section: Main Tectonic Units Of the Regionmentioning

confidence: 99%

Section: Main Tectonic Units Of the Regionmentioning

confidence: 99%

Section: 22mentioning

confidence: 99%

See 2 more Smart Citations

Correlation of geological complexes of the Khan-Tengri Mountain massif

Mikolaichuk¹,

Apayarov²,

Gordeev³

2022

Preprint

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“…Many researchers have invoked the slab breakoff mechanism to explain postcollisional magmatism and metamorphism, as seen in the Alps, Dabie, Himalayas, and Eastern Junggar [111,[130][131][132]. In addition, slab breakoff has been used to explain Early Permian magmatism in the Western Tianshan [133], Late Carboniferous granite in the Nalati Mountain [134], and iron mineralization in the AIMB [115]. Wang et al [115] proposed two periods for the tectonic setting of the AIMB in the Late Carboniferous: a slab breakoff period (320-310 Ma) and a subsequent postcollisional period (309-290 Ma), identifying the former as the setting for iron mineralization.…”

Section: Implications For Metallogenic Settingmentioning

confidence: 99%

Geochronology and Geochemistry of Volcanic and Intrusive Rocks from the Beizhan Iron Deposit, Western Xinjiang, NW China: Petrogenesis and Tectonic Implications

Duan,

Jiang,

Luo

2023

Minerals

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The Awulale Iron Metallogenic Belt (AIMB) located in Central Tianshan is a significant iron ore belt in China. The Beizhan area exhibits extensive volcanic and intrusive rocks that formed during or close to the iron mineralization period. The iron ores in Beizhan are found in Early Carboniferous rhyolite and dacite tuff. The rhyolite is enriched in LILEs and LREEs, depleted in HFSEs, and shows high positive εNd(t) values (+3.0–+4.0). Late Carboniferous intrusive rocks include a granite stock and diabase and diorite dykes. The zircon grains from the granite yield a weighted mean 206Pb/238U age of 311.8 ± 2.6 Ma. The geochemical features of the granite are similar to those of rhyolite, but with pronounced negative anomalies of Eu, Sr, P, and Ti and higher positive εNd(t) values (+4.9–+5.1). The zircons in the diorite dyke yield a weighted mean 206Pb/238U age of 299.2 ± 1.4 Ma. Both the diabase and diorite dykes show an enrichment of LREEs and depletion of HFSEs with high positive εNd(t) values (+3.3–+7.3 and +2.3–+2.6, respectively), although the Eu, Th, and Sr anomalies are more negative in the diorite compared to the diabase. The rhyolite displays high positive εNd(t) values and young Nd model ages (TDM2 = 760–838 Ma) and has Nb/Ta ratios (11.3–12.8) close to that of the continental crust, indicating that it originated from the partial melting of the juvenile lower crust. The granite has similar geochemical characteristics (TDM2 = 656–673 Ma and Nb/Ta ratio = 8.7–10.9) and is also believed to have originated mainly from the partial melting of the juvenile lower crust. The diabase and diorite dykes have low (Tb/Yb)N ratios (<2) and high Ba/Th (31.8–353.2 and 185.3–251.3, respectively) and Sr/Th (113.8–312.9 and 144.7–163.1) ratios, and exhibit a pronounced depletion of HREEs and Y and negative Th anomalies, suggesting that they originated from a spinel-garnet lherzolite mantle source. The Early Carboniferous rhyolite erupted in a continental arc setting, whereas the Late Carboniferous granites, diabase dykes, and diorite dykes formed in an extensional setting associated with the upwelling of the asthenosphere. Therefore, the magmatism and Fe mineralization in the AIMB are correlated with an extensional setting associated with oceanic slab breakoff.

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