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Chao Yuan
Chinese Academy of Sciences
139Publications
42H-index
7,187Citations
Publications 139
Newest
#1Xiaoping Long (Northwest University (United States))H-Index: 32
#2Bei Xu (PKU: Peking University)H-Index: 19
Last.Lei Zhang (Northwest University (United States))H-Index: 1
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Abstract Neoproterozoic metavolcanic-sedimentary sequences are well preserved along the southwestern margin of Tarim Craton, NW China. In order to constrain the depositional timing of the metasedimentary sequences and better understand the crustal evolution, we present new detrital zircon U–Pb ages and Hf isotopic data for the Neoproterozoic metasediments collected from the eastern Aliankate Group in the southwestern Tarim Craton (STC). The detrital zircons are characterized by high Th/U ratios,...
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#1Pengfei Li (CAS: Chinese Academy of Sciences)H-Index: 2
#2Min Sun (HKU: University of Hong Kong)H-Index: 93
Last.Keda Cai (China University of Geosciences)
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Abstract The Central Asian Orogenic Belt (CAOB), the largest accretionary orogen on Earth, has received considerable attention in the last 25 years. Various models have been proposed to explain the evolution of the CAOB, incorporating processes such as the lateral duplication of one single arc system along large shear zones, terrane accretion/amalgamation, oroclinal bending, ridge subduction, and trench migration. To better understand accretionary processes along the southwestern Siberian margin...
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#1Zhengfan Lin (CAS: Chinese Academy of Sciences)H-Index: 2
#2Chao Yuan (CAS: Chinese Academy of Sciences)H-Index: 42
Last.Zongying Huang (CAS: Chinese Academy of Sciences)H-Index: 9
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Abstract Whole-rock geochemical and Sr–Nd–Pb–Hf isotopic analyses were conducted on the Triassic Ashele post-orogenic basalts from the Chinese Altai. The tholeiitic Ashele basalts possess moderate Na2O (2.46–4.52 wt%) but extremely low K2O (≤0.06 wt%) contents, and are depleted in light rare earth elements (LREE). Their (La/Sm)N and (La/Yb)N ratios range from 0.78 to 0.88 and from 0.72 to 0.84, respectively, which, together with their low initial 87Sr/86Sr (0.7048–0.7052), high eNd(t) (+4.9 to +...
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#1Zongying Huang (CAS: Chinese Academy of Sciences)H-Index: 9
#2Chao Yuan (CAS: Chinese Academy of Sciences)H-Index: 42
Last.Long Du (SDUST: Shandong University of Science and Technology)
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#1Zhengfan Lin (CAS: Chinese Academy of Sciences)
#2Chao Yuan (CAS: Chinese Academy of Sciences)H-Index: 42
Last.Zhiwei Chen (CAS: Chinese Academy of Sciences)
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Abstract Tectonic transition from post-collision to intraplate settings is a crucial process in orogenic belts. To characterize such a transition in the Chinese Altai, we conduct an integrated study on Permian to Triassic granitoids. Zircon U–Pb dating reveals that the granitoids can be subdivided into two stages: early Permian (291–286 Ma) and late Triassic (216–209 Ma). Granitoids of both two stages exhibit high SiO2, low Mg#, low Cr and Ni contents, and variable Sr–Nd–Hf isotopes, all of whic...
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#1Yunying Zhang (CAS: Chinese Academy of Sciences)H-Index: 9
#2Chao Yuan (CAS: Chinese Academy of Sciences)H-Index: 42
Last.Zhengfan Lin (CAS: Chinese Academy of Sciences)H-Index: 2
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Cenozoic continental basalts are widespread in central Asia. To explore their source nature and petrogenesis, this study presents an integrated study of olivine chemistry, bulk-rock 40Ar/39Ar age and geochemistry as well as Sr–Nd–Pb–B–Mo isotopes for the Miocene (ca. 15.5 Ma) Halaqiaola basalts in the Chinese Altai, central Asia. The Halaqiaola basalts mostly have basanite compositions with high total alkali (Na2O + K2O = 6.89–8.01 wt%) contents and high K2O/Na2O (0.87–1.39) ratios. Compared wit...
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#1Long Du (Northwest University (United States))
#2Yunying Zhang (HKU: University of Hong Kong)H-Index: 9
Last.Xiaoping Long (Northwest University (United States))H-Index: 32
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Abstract Deciphering the tectonic evolution of the Kangguer Ocean is critical to understand the architecture of the Eastern Tianshan, NW China. Previous studies for the Kangguer Ocean mainly concentrated on final closure during the Latest Carboniferous to Permian. Three distinct episodes of granitoids have been recognized in the Kangguer belt: Late Devonian (ca. 360 Ma) normal I-type granites, Early Carboniferous (ca. 348 Ma) fractionated I-type granites, and Late Carboniferous (ca. 317–302 Ma) ...
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#1Jiyuan Yin (Northwest University (United States))
#2Wen Chen (Ontario Ministry of Natural Resources)
Last.Xiaoping Long (Northwest University (United States))H-Index: 32
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Abstract The Carboniferous Tuwu-Yandong porphyry Cu deposits, located in the eastern Tianshan, are the largest porphyry Cu deposits in the Xinjiang province, China. This work presents new zircon and apatite fission track (ZFT and AFT) data from this porphyry Cu deposit, combined with inverse thermal modeling and previously published ages to reveal their preservation condition and exhumation history. Specifically, four cooling episodes are recognized: rapid cooling (24–44 °C/Ma) during the early ...
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#1Rong Yin (CAS: Chinese Academy of Sciences)H-Index: 1
#2Xiao-Long HuangYaoling (CAS: Chinese Academy of Sciences)H-Index: 30
Last.Lin-Li Chen (CAS: Chinese Academy of Sciences)H-Index: 3
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Abstract The Bailongshan pegmatite district in south Xinjiang Province, NW China, is a newly discovered area of rare-element pegmatites. It is a superlarge Li Rb reserve that includes an estimated 3.45 million tons of Li2O and 176,000 tons of Rb2O. On the basis of a detailed characterization of textures and minerals in the Bailongshan 2# and 5# pegmatites, six zones are identified: a saccharoidal albite zone (zone I), a graphic pegmatite zone (zone II), a blocky microcline zone (zone III), a mus...
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#1Yanqiong Huang (CAS: Chinese Academy of Sciences)H-Index: 1
#2Yingde Jiang (CAS: Chinese Academy of Sciences)H-Index: 14
Last.Chao Yuan (CAS: Chinese Academy of Sciences)H-Index: 42
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Abstract The mechanism for generation of Silurian-Devonian hornblende-bearing I-type granitoids in the Chinese Altai still remains rather obscure. The possibility that they are derived from the regional anatexis of the Ordovician accretionary wedge, i.e., the Habahe Group, is investigated. The Habahe Group contains a large number of intermediate-to-basic components. These components occur mainly as interlayered volcanogenic bands or admixtures and less commonly as blocks varying in size from sev...
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