Evolution of the Solonker suture zone: Constraints from zircon U–Pb ages, Hf isotopic ratios and whole-rock Nd–Sr isotope compositions of subduction- and collision-related magmas and forearc sediments

Chen, B.; Jahn, Bor‐ming; Tian, Wei

doi:10.1016/j.jseaes.2008.05.007

Cited by 482 publications

(321 citation statements)

References 32 publications

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“…In recent years, many sedimentary provenance studies have been carried out on various types of sedimentary rocks and metamorphic rocks with sedimentary protoliths in the CAOB. These rocks include the pelitic schists of the Hulan Group in the southern part of the Songliao Block, the eastern section of the Xing-Meng Orogen ; the biotite-plagioclase paragneiss of the Xilinhot Metamorphic Complex in Inner Mongolia (Shi et al, 2003;Chen et al, 2009a) and the Early Palaeozoic sedimentary rocks of the Chinese Altai Orogen (Long et al, 2007). Similar studies have also been carried out on the Zhaertai Group quartz sandstones (Li et al, 2007) and the Wulashan khondalites (Xia et al, 2006) of the NCB in Inner Mongolia.…”

Section: Introductionmentioning

confidence: 69%

“…Although the Phanerozoic strata are well developed in the Xing-Meng Orogenic Belt in the middle to eastern part of Inner Mongolia (Li et al, 1996), very few detailed geochemical studies have been carried out to discuss their sedimentary provenance and the tectonothermal evolution of the provenance based on zircon UÀPb dating and Hf isotopes. The only similar study (Shi et al, 2003;Chen et al, 2009a) on the biotite-plagioclase gneiss in Xilinhot was based on 36 zircon SHRIMP UÀPb ages, a number which is statistically insufficient for a provenance analysis (Dodson et al, 1988).…”

Section: Introductionmentioning

confidence: 99%

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Detrital zircon UPb ages, Hf isotopes and tectonic implications for Palaeozoic sedimentary rocks from the Xing‐Meng orogenic belt, middle‐east part of inner Mongolia, China

Chen

Zhong

et al. 2010

Geological Journal

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The Xing-Meng Orogenic Belt is the eastern extension of the Central Asian Orogenic Belt that marks the boundary between the North China Block and the Siberian Block. Studies of zircon UÀPb ages and Hf isotopic compositions show that four clastic sedimentary rock samples from different parts of the regional stratigraphic sequence were deposited at different ages, none earlier than Mid-or Early Silurian. Two sedimentary rocks were deposited during or after the Early Permian. Almost all zircons are of igneous origin. In Silurian and Devonian sediments, zircons show several modal age peaks, and in Permian sediments, zircons show a unimodal age peak. Based on the zircon age distribution of sedimentary rocks versus known ages from exposed rocks of the potential source regions, most of the zircons were derived from the Xing-Meng Orogen itself. A few came from the South Mongolian microcontinent or the Siberia Block, but none came from the North China Block. The zircons of a biotite-plagioclase paragneiss in Xilinhot have similar provenance to the sediments and were deposited during or after the Middle Devonian. Similarities between zircon age spectra and events in underlying rocks of sedimentary origin show that the sediments lie at their deposition site north of the Solonker suture zone because north-dipping subduction and elevation blocked deposition of material from farther afield. Hf isotope compositions show the crustal accretion stages of the provenance areas during the Meso-to

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Section: Introductionmentioning

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Detrital zircon UPb ages, Hf isotopes and tectonic implications for Palaeozoic sedimentary rocks from the Xing‐Meng orogenic belt, middle‐east part of inner Mongolia, China

Chen

Zhong

et al. 2010

Geological Journal

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“…During the Late Paleozoic-Early Mesozoic, the final closure of the Paleo-Asian Ocean indicated the completion of the CAOB evolutionary (Xiao et al, 2003;Jahn, 2004;Chen et al, 2009;Wang et al, 2015). After that, the whole NE Asia was subsequent in the Mongol-Okhotsk tectonic system and circum-Pacific tectonic system in the Late Mesozoic (Metelkin et al, 2010;Sun et al, 2013b).…”

Section: Geodynamic Implicationsmentioning

confidence: 99%

Geochronology, geochemistry and geodynamic implications of the Late Mesozoic volcanic rocks in the southern Great Xing’an Mountains, NE China

Yang

Niu

Cheng

et al. 2015

Journal of Asian Earth Sciences

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“…The south margin of the North China craton is the QinglingDabie-Sulu orogenic belt (Zhang et al 1995;Meng and Zhang 1999;Ye et al 2000;Sun et al 2002aSun et al , 2002bChen et al 2003;Zheng et al 2003;Huang et al 2011), and the north margin belongs to the Central Asian orogenic belt (Xiao et al 2005;Chen et al 2009Chen et al , 2010Xiao et al 2009;Jian et al 2010). Both of these are famous for orogenic Au deposits (Mao et al 2003;Zhou et al 2003;Li et al 2004;Zhang et al 2005Zhang et al , 2006Zeng et al 2006;Yang et al 2008;Jiang et al 2009;Zhu et al 2010).…”

Section: Early Cretaceous Clockwise Change In Pacific Plate Motions Amentioning

confidence: 99%

Large-scale gold mineralization in eastern China induced by an Early Cretaceous clockwise change in Pacific plate motions

Sun

Yang

et al. 2012

International Geology Review

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Orogenic gold (Au) deposits are the most important type, accounting for more than half of the world's proven Au reserves. They are mainly controlled by three key factors: (1) abundant andesitic rocks (SiO 2 of 55-60 wt.%) at depth, which have systematically higher Au contents than other rock types; (2) a pervasive transition from greenschist facies to amphibolite facies metamorphism within a short period, which releases S 2− -rich fluids that may scavenge Au from host rocks; and (3) deformation and fracturing under a compressive/transpressive tectonic regime. Orogenic belts at convergent margins are the best places for such mineralization because convergent margins are rich in andesites; the transition from greenschist to amphibolite facies recrystallization commonly occurs as a result of collision, compression, and thickening at convergent margins, forming large amounts of Au-rich fluids within a short period of time; and strong deformation and fracturing during orogenic processes provide channels for fluid transportation. Moreover, the overlying plate is injected and enriched by auriferous fluids released during amphibolite facies metamorphism of the subducting plate. The Pacific plate changed course by ∼80• (from SW to NW) at approximately 125-122 Ma, reflecting an altered thermal structure and the elevation of the South Pacific plate attending the appearance of the plume head that formed the Ontong Java large igneous province. Consequently, the tectonic regime changed from extension to compressive/transpressive in eastern China, causing deformation, thickening, and metamorphism of the overriding plate, especially along weak crustal belts (e.g. overlying plates of palaeosutures), which resulted in world-class mineralization of orogenic Au deposits. During this process, pyrite changed to pyrrhotite during the transition from greenschist to amphibolite facies, releasing sulphur. Sulphur mobilized and scavenged Au and other chalcophile elements into metamorphic ore-forming fluids. A series of NE-trending compressive faults were formed at ∼120 Ma as a result of continuous compression of the subducting Pacific plate, releasing these ore-forming fluids. Auriferous carbonate-rich quartz veins and/or metasomatized Au-bearing wall rocks were formed due to the decompression of the ascending ore-forming fluids. Orogenic belts along the margins of the North China craton and the Jiangnan block were the most favourable regions for mineralization. Compared with the former, the latter has much smaller proven Au reserves. However, more exploration is needed along the margins of the Jiangnan block. Promising targets include accessory faults and kink points of large, NE-trending Cretaceous faults that transect greenschist facies metamorphic rocks of the Niuwu and Jingtan Groups, etc.

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Evolution of the Solonker suture zone: Constraints from zircon U–Pb ages, Hf isotopic ratios and whole-rock Nd–Sr isotope compositions of subduction- and collision-related magmas and forearc sediments

Cited by 482 publications

References 32 publications

Detrital zircon UPb ages, Hf isotopes and tectonic implications for Palaeozoic sedimentary rocks from the Xing‐Meng orogenic belt, middle‐east part of inner Mongolia, China

Detrital zircon UPb ages, Hf isotopes and tectonic implications for Palaeozoic sedimentary rocks from the Xing‐Meng orogenic belt, middle‐east part of inner Mongolia, China

Geochronology, geochemistry and geodynamic implications of the Late Mesozoic volcanic rocks in the southern Great Xing’an Mountains, NE China

Large-scale gold mineralization in eastern China induced by an Early Cretaceous clockwise change in Pacific plate motions

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