Elemental and Nd-Sr isotopic geochemistry of granitoids from the West Junggar foldbelt (NW China), with implications for Phanerozoic continental growth

Chen, B.; Arakawa, Yoji

doi:10.1016/j.gca.2004.09.019

Cited by 288 publications

(203 citation statements)

References 48 publications

(102 reference statements)

Supporting

Mentioning

190

Contrasting

Unclassified

Order By: Relevance

“…Synthesis of geochronological data from magmatic Late Paleozoic rocks of West Junggar, after Kwon et al (1989), Jin and Shen (1993), Qi et al (1993), Shen et al (1993), Li et al (2004), Chen and Arakawa (2005), Han et al (2006), Su et al (2006), Zhou et al (2006), Song et al (2007), Wang and Zhu (2007), Zhou et al (2008), An and Zhu (2009), Geng et al (2009), Tang et al (2009) and Yin et al (2010. Table 4.…”

Section: Discussionmentioning

confidence: 99%

Late Paleozoic paleogeographic reconstruction of Western Central Asia based upon paleomagnetic data and its geodynamic implications

Choulet

Chen

Wang

et al. 2011

Journal of Asian Earth Sciences

116

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Late Paleozoic paleogeographic reconstruction of Western Central Asia based upon paleomagnetic data and its geodynamic implications

Choulet

Chen

Wang

et al. 2011

Journal of Asian Earth Sciences

116

View full text Add to dashboard Cite

“…This belt seems to be one of the most important sites of juvenile crustal formation in the Phanerozoic . The juvenile nature is characterised by positive to around zero ε Nd (t) values and low initial Sr isotopic ratios of many Paleozoic granitoid plutons in the CAOB, such as those in Russian Transbaikalia (Wickham et al, 1996;Kovalenko et al, 2004), Kazakhstan (Heinhorst et al, 2000), northern Xinjiang (NW China, Han et al, 1997;Hu et al, 2000;Jahn et al, 2000;Jahn, 2002, 2004;Chen and Arakawa, 2005;Su et al, 2007;Zhao et al, 2008;, northern Inner Mongolia (N China, Chen et Shi et al, 1999;Zhou et al, 2004); KHF, Kumix-Hongliuhe Fault;ASF, Aqqikkudug-Shaquanzi Fault;KF, Kangguer Fault;Indosinian intrusive names: TH, Tianhu biotite granite (220 Ma, Li et al, 2005); WY, Weiya complex (246-233 Ma, Zhang et al, 2005a); NY, North Yamansu biotie granite (227.9 Ma, Lei et al, 2010). Insert (modified from Chung et al, 2004) Shu et al, 2004b).…”

Section: Introductionmentioning

confidence: 99%

Sr, Nd and O isotopic characters of quartz syenite in the Weiya magmatic complex from eastern Tianshan in NW China: Melting of the thickened juvenile lower crust

Zunzhong²,

et al. 2010

Geochem. J.

View full text Add to dashboard Cite

New Sr-Nd-O isotopic data are reported for the early Triassic (early Indosinian) Weiya quartz syenite from eastern Central Tianshan, northwestern China, with the aim of documenting its possible source(s), constraining its petrogenesis and discussing its tectonic implications. Whole-rock Rb-Sr isochron of the Weiya quartz syenite rock yielded an age of 246.5 ± 4.8 Ma, which is well consistent with zircon SHRIMP U-Pb age. Additionally, the rock exhibits positive ε Nd (t) value (+1.36 to +1.66), medium I sr (0.7088 to 0.7090), "normal" δ 18 O value (6.9 to 8.1‰) and young Nd model ages (T DM = 0.88 to 0.91 Ga). Combined with their petrogaphic and geochemical characters, the Weiya quartz syenite is suggested to have been generated by partial melting of juvenile lower crust rocks at high temperature. The partial melting is attributed to intra-continental subduction, which resulted in thickening of the continental crust, delamination of the lithosphere root, underplating of mantle-derived magma and subsequent regional extension. Heat from underplated mantle magma caused melting of the overlying lower crustal rocks and consequent generattion of the quartz syenitic liquid. It is supposed that the intra-continental subduction was induced by tectonic conversion from the Paleo-Asian subduction-collision system to the Paleo-Thethys regime during the latest Permian or earliest Triassic in the eastern Tianshan.

show abstract

“…The West Junggar tectonic unit consists of several terranes such as island arcs and accretionary complexes, including, from north to south, the Zharma-Saur arc, the Tarbagatay accretionary complex, the Chingiz arc, and the West Junggar accretionary complex (Figure 1b) [30,31].…”

Section: Geological Settingmentioning

confidence: 99%

Spectral properties of weathered and fresh rock surfaces in the Xiemisitai metallogenic belt, NW Xinjiang, China

Zhou

Wang

2017

Open Geosciences

View full text Add to dashboard Cite

Surfaces weathering of rocks in which mineral materials may be similar to or quite different from the minerals in the underlying parent rock completely control the reflectance spectra of the terrain. Our study of typical weathered and fresh rock samples from the Xiemisitai metallogenic belt, Western Junggar region, Xinjiang, found that weathering results in the formation of new materials that cause differences in the spectral features of fresh and weathered rock surfaces. Alterations induce variations in spectrum brightness, presence and intensity of characteristic absorption features, and spectral slope. Spectral differences between weathered and fresh rock surfaces are small for rhyolite, granite, and tuffaceous sandstone, but large for andesite, basalt, and diorite. Spectral changes in the 350-1000 nm wavelength region are attributed to alteration of iron oxides by atmospheric processes or secondary alteration of iron-rich minerals. Spectral features between 1000-2500 nm are caused by O-H vibrations, with features at 2200-2500 nm solely attributed to hydroxyl groups. The strongest Al-OH bands appear near 2200 nm, while Mg-OH bands are found near 2300 nm and 2350 nm. Results from this study can be used to better characterize and discriminate lithological units and potential mineral zones using hyperspectral and multispectral remote sensing techniques.

show abstract

Elemental and Nd-Sr isotopic geochemistry of granitoids from the West Junggar foldbelt (NW China), with implications for Phanerozoic continental growth

Cited by 288 publications

References 48 publications

Late Paleozoic paleogeographic reconstruction of Western Central Asia based upon paleomagnetic data and its geodynamic implications

Late Paleozoic paleogeographic reconstruction of Western Central Asia based upon paleomagnetic data and its geodynamic implications

Sr, Nd and O isotopic characters of quartz syenite in the Weiya magmatic complex from eastern Tianshan in NW China: Melting of the thickened juvenile lower crust

Spectral properties of weathered and fresh rock surfaces in the Xiemisitai metallogenic belt, NW Xinjiang, China

Contact Info

Product

Resources

About