Diagenesis and metallogenetic mechanisms of the Tuanjiegou gold deposit from the Lesser Xing’an Range, NE China: Zircon U–Pb geochronology and Lu–Hf isotopic constraints

Sun, Jing; Han, Shijiong; Zhang, Yong; Xing, Shuwen; Bai, Ling-An

doi:10.1016/j.jseaes.2012.10.021

Cited by 56 publications

(29 citation statements)

References 22 publications

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“…Nineteen analyses form a concordant group with a weighted mean 206 Pb/ 238 U age of 106 ± 1 Ma (Fig. f), which is in accordance with the recent dating result (107.0 ± 1.2 Ma, Sun et al ., ) and is interpreted as the crystallization age of the plagiogranite porphyry.…”

Section: Resultsmentioning

confidence: 99%

“…() summarized the previously published zircon U–Pb data for the Phanerozoic granitoids in NE China and proposed that granitoids exposed in GXR were mainly generated during the Early Cretaceous with some in the Palaeozoic, whereas granitoids in LXR and the Zhangguangcai Range were mainly formed during the Jurassic with some in the Palaeozoic and Triassic. Our zircon U–Pb data, combined with several recently published results (Zhang et al ., ; Liu et al ., , ; Sun et al ., ), suggest that the Jurassic magmatism may also be important in GXR, and the Early Cretaceous granitoids can be found in LXR as well, although they may not occupy the principal part. These indicate that there was continuous magmatism (and volcanism) in both GXR and LXR during the Jurassic–Early Cretaceous interval.…”

Section: Discussionmentioning

confidence: 99%

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Geochronology and Sr–Nd–Hf isotopes of the Mesozoic granitoids from the Great Xing'an and Lesser Xing'an ranges: implications for petrogenesis and tectonic evolution in NE China

Ding

Yao

et al. 2014

Geological Journal

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The Great Xing′an and Lesser Xing′an ranges are characterized by immense volumes of Mesozoic granitoids. In this study, we present major and trace element geochemistry, U–Pb geochronology and systematic Sr–Nd–Hf isotopes for the representative samples, in order to constrain their petrogenesis and the tectonic evolution in NE China. The granitoids generally have high SiO2 (66.5–78.8 wt.%) and Na2O + K2O (7.0–8.9 wt.%) contents and belong to high‐K calc‐alkaline to shoshonitic series. All of them show enrichment in Rb, Th, U, Pb and light rare earth elements (LREE), and depletion in Nb, Ta, P and Ti. Zircon U–Pb dating suggests that there was continuous magmatism in both the Great Xing′an Range and the Lesser Xing′an Range during the Jurassic–Early Cretaceous interval. Seven Jurassic granitoids have (87Sr/86Sr)i values of 0.704351 to 0.707374, with ϵNd(t) values of −3.4 to 2.4 and ϵHf(t) values of 0.8 to 11.3, indicating that they originated from mixed sources involving depleted mantle and pre‐existing crustal components. One Early Cretaceous sample yields (87Sr/86Sr)i value of 0.706184, ϵNd(t) value of 0.6, and ϵHf(t) values of 7.0 to 8.2, which is in accordance with previous studies and indicates a major juvenile mantle source for the granitoids in this period. In the Jurassic, the magmatism in the Great Xing′an Range was induced by the subduction of the Mongol–Okhotsk Ocean, while the contemporaneous magmatism in the Lesser Xing′an Range was related to the subduction of the Palaeo‐Pacific Ocean. In the Early Cretaceous, extensive magmatism in NE China was probably attributed to large‐scale lithospheric delamination. Copyright © 2014 John Wiley & Sons, Ltd.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Geochronology and Sr–Nd–Hf isotopes of the Mesozoic granitoids from the Great Xing'an and Lesser Xing'an ranges: implications for petrogenesis and tectonic evolution in NE China

Ding

Yao

et al. 2014

Geological Journal

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“…According to previous researches (Hu et al, ; Sun, Han, Zhang, Xing, & Bai, ; Wu et al, ; Yang et al, ; Zhang et al, ), the regional stratigraphy of the LXZR includes the following four tectonic units: (a) Precambrian metamorphic basement, consisting of the Paleoproterozoic Dongfengshan and Zhangguangcai Range groups; (b) Palaeozoic submarine sedimentary strata cover; (c) Mesozoic volcaniclastic rocks, volcanic rocks, and terrigenous clastic rocks, mainly consisting of Jurassic and Cretaceous strata; and (d) Cenozoic sandstones, conglomerates, and continental basaltic rocks. The Precambrian metamorphic basement comprises metafelsic rocks, marbles, amphibolites, schist, and phyllite, which are discordantly overlain by Cambrian strata consisting of carbonates, terrigenous clastic rocks, and low‐grade metamorphic rocks and host some skarn Pb, Zn, Fe, W, and Mo deposits.…”

Section: Geological Settingmentioning

confidence: 99%

Geology, geochemistry, and geochronology of the Cuihongshan Fe‐polymetallic deposit, Heilongjiang Province, NE China

et al. 2018

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The Cuihongshan deposit is a giant Fe‐polymetallic skarn deposit located in the northern zone of the Lesser Xing'an–Zhangguangcai Range (LXZR), NE China. It is predominantly hosted in skarn contact zones between marble and alkali‐feldspar granites and monzogranites, with minor in fracture zones of granodiorites. Because of dense vegetation cover, complex intrusions, and contact relation between orebodies and rocks, the metallogenesis of the deposit is poorly understood. Here, we present detailed whole‐rock geochemistry, zircon U–Pb geochronology of granitoids, and molybdenite Re–Os isotopic dating data. All of the granitoids in the Cuihongshan deposit area are silica and potassium rich, highly fractionated, showing affinities to high‐fractionated I‐type granites. However, compared with the other granitoids, the Late Triassic alkali‐feldspar granites have higher differentiation index, stronger enrichment in F, W, Mo, Pb, Th, U, and volatiles with partial mineralization. The zircon U–Pb dating of the granodiorite, monzogranite, and alkali‐feldspar granite yielded weighted average ages of 493 ± 4, 194 ± 1, and 204 ± 1 Ma, respectively. The Re–Os dating of molybdenites from the Cuibei and Cuizhong ore sections yielded isochron ages of 205 ± 2 and 204 ± 4 Ma, respectively, which are consistent with the emplacement age of the alkali‐feldspar granite. Combined with the lines of evidence from the contact relationship between the orebodies and alkali‐feldspar granite, the disseminated mineralization and the enrichment in ore‐forming elements and volatiles in the alkali‐feldspar granite, these indicate that the Late Triassic alkali‐feldspar granite rather than the monzogranite as previously reported, has a close genetic relationship with the Cuihongshan deposit. In addition, the alkali‐feldspar granites occur as apophyses and dikes, but the Late Cambrian and Early Jurassic granitoids occur as batholiths. This indicates that, according to the theory that “small intrusions form large deposits”, a potential Late Triassic (~204 Ma) buried batholith might have provided abundant ore‐forming materials. However, the top parts of the Late Cambrian and Early Jurassic granitoids have been denudated, which is unfavourable for significant deposit preservation and mineralization related to the 2 stages of granitoids. This study gives a significant suggestion that exposed, and blind apophyses and dikes should be further considered in the exploration and study of metal deposits in NE China. Three phases of mineralization occurred in the LXZR in the Triassic–Jurassic, namely, porphyry–skarn Cu–Mo polymetallic mineralization (~250–240 Ma), skarn Fe–Pb–Zn polymetallic mineralization (~204–190 Ma), and porphyry Mo polymetallic mineralization (~180–160 Ma). On the basis of regional data, the LXZR experienced subduction and collisional settings during ~260–185 Ma and ~180–160 Ma, respectively. Hence, the Early Triassic (~250–240 Ma) and Late Triassic–Early Jurassic (~204–190 Ma) mineralizations represented by the Baoshan and Cuihongshan deposit...

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“…With the discoveries of many gold deposits in the Lesser Xing'an Range in NE China, it has been identified as an important metallogenic belt in NE China (Figure ). Many studies have been carried out during the past decade in order to identify the geological characteristics, ore genesis, and geochronology of the associated igneous rocks, as well as the corresponding geodynamic settings (Chang & Li, ; S. Gao et al, ; R. Gao et al, ; Han, ; Hu et al, ; R. P. Liu et al, ; Ren et al, ; Song et al, ; J. G. Sun, Han, Zhang, Xing, & Bai, ; Y. B. Wang et al, ; S. S. Wang et al, ; Y.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, genesis of the Early Cretaceous magmatic rocks remains obscure. Different interpretations include remelting of juvenile lower crust (Shu, Lai, Wang, Xu, & Sun, ; Zeng, Yang, Zhang, Liu, & Duan, ; Z. C. Zhang, Mao, et al, ), partial melting of thickened crustal material (J. G. Sun et al, ; H. Y. Wu, Zhang, et al, ; X. J. Zhang, Zhang, et al, ), and partial melting of asthenospheric mantle with contribution from melts of enriched lithospheric mantle (Z. C. Zhang, Mao, et al, ) or underplated lower crust (J. G. Sun et al, ). In addition, origin of the Early Cretaceous magmatic rocks was only studied in a few gold deposits in the Lesser Xing'an Range (such as Dong'an, Tuanjiegou, and Sandaowanzi; J. G. Sun et al, ; Chang & Li, ; R. P. Liu et al, ; S. Gao et al, ; S. S. Wang et al, ).…”

Section: Introductionmentioning

confidence: 99%

Zircon U–Pb geochronology and Sr–Nd–Pb–Hf isotopic constraints on the timing and origin of the Early Cretaceous igneous rocks in the Yongxin gold deposit in the Lesser Xing'an Range, NE China

Zhong-hai

Sun

Li³

et al. 2019

Geological Journal

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The Lesser Xing'an Range in NE China is an important gold district. However, the age and genesis of Early Cretaceous magmatic rocks that are coeval with gold mineralization remain obscure. A suite of Early Cretaceous igneous rocks in a newly discovered gold deposit at Yongxin was conducted zircon U–Pb dating and Hf isotope and bulk‐rock geochemistry and Sr–Nd–Pb isotope analyses. A dacite of the Guanghua Formation and an andesite of the Longjiang Formation have zircon U–Pb ages of 111.7 ± 1.5 Ma and 119.7 ± 1.9 Ma, respectively. The dacite has zircon εHf(t) values of 5.4 to 12.0 and depleted bulk‐rock Sr–Nd–Pb isotopes ((87Sr/86Sr)i = 0.7049 to 0.7056, εNd(t) = 1.2 to 2.5, (206Pb/204Pb)i = 18.202 to 18.320). The andesite has zircon εHf(t) values of 5.6 to 13.6, (87Sr/86Sr)i of 0.7049 to 0.7051, εNd(t) of 1.0 to 1.6, and (206Pb/204Pb)i of 18.199 to 18.297. The ~120 Ma diorite porphyry and granite porphyry have zircon εHf(t) values of 3.7 to 10.0 and 3.6 to 10.2, respectively. These two units show large variations of 87Rb/86Sr ratios (<1) and similar Sr–Nd–Pb isotopes compositions. All rock units are enriched in light rare earth elements and large‐ion lithophile elements and depleted in high‐field‐strength elements. The formation of Yongxin Early Cretaceous igneous rocks was related to variable degrees of partial melting from Jurassic basalt in the lower crust with significant contribution from ancient continental materials. The low Sr/Y ratios (2–24) and negative correlations between Sr, Eu/Eu, and SiO2 indicate that magmas of the Early Cretaceous igneous rocks at Yongxin have low water content and thus have low potentiality for porphyry copper mineralization.

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Diagenesis and metallogenetic mechanisms of the Tuanjiegou gold deposit from the Lesser Xing’an Range, NE China: Zircon U–Pb geochronology and Lu–Hf isotopic constraints

Cited by 56 publications

References 22 publications

Geochronology and Sr–Nd–Hf isotopes of the Mesozoic granitoids from the Great Xing'an and Lesser Xing'an ranges: implications for petrogenesis and tectonic evolution in NE China

Geochronology and Sr–Nd–Hf isotopes of the Mesozoic granitoids from the Great Xing'an and Lesser Xing'an ranges: implications for petrogenesis and tectonic evolution in NE China

Geology, geochemistry, and geochronology of the Cuihongshan Fe‐polymetallic deposit, Heilongjiang Province, NE China

Zircon U–Pb geochronology and Sr–Nd–Pb–Hf isotopic constraints on the timing and origin of the Early Cretaceous igneous rocks in the Yongxin gold deposit in the Lesser Xing'an Range, NE China

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