Compression between microcontinents in the Cathaysian Block during the early Yanshanian: petrogenesis of the Tangquan pluton in Southwest Fujian Province, Southeast China

Zhao, Xilin; Yu, Shengyao; Mao, Jianren; Liu, Kai; Yu, Miao; Yang, Jin‐Hui; Chen, Zhihong; Hou, Kejun; Peng, Yanjun

doi:10.1002/gj.2862

Cited by 12 publications

(22 citation statements)

References 143 publications

(413 reference statements)

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“…These geochemical characteristics match the compositions of adakitic rocks, as originally defined by Defant & Drummond (), although the Yongchun pluton has higher Na 2 O concentrations (2.95–4.03 wt%; average 3.22 wt%) and Na 2 O/K 2 O ratios (average 1.08), similar to the Tangquan pluton (Na 2 O = 2.16–4.32 wt%; average 3.55 wt%) of West Fujian Province (Table ) (G. Wang, Shu, Xu, Tang, & Gaschnig, 2012; W. Xu et al, ; C. Zhang, Ma, & Holtz ; H. Zhang et al, ; X. Zhao et al, , ).…”

Section: Resultssupporting

confidence: 71%

“…All of the Yongchun pluton samples exhibit Na 2 O values slightly higher than those of adakitic rocks in other areas (G. Wang et al, , J. Xu et al, ; W. Xu et al, ; Zheng et al, ) and similar to the Tangquan pluton of West Fujian Province (X. Zhao et al, ), indicating they formed through similar processes. In Pb/Ce vs Nb/U and Hf/Zr vs Th/U diagrams (Figure a,b), all of the Yongchun pluton samples appear similar to those of the Lower Yangtze River Belt, Dabie adakitic rocks, and Tangquan pluton of West Fujian Province (S. Liu et al, ; Q. Wang et al, ; X. Zhao et al, ).…”

Section: Resultsmentioning

confidence: 86%

“…All such adakitic rocks are classed as “K‐adakitic rocks” or “C‐type” adakitic rocks (Clemens, Darbyshire, & Flinders ; X. Li et al, ; Xiao & Clemens, ). X. Zhao et al () report on the Tangquan pluton ( ca 162 Ma) in southwest Fujian Province, and this is the first account of a Jurassic adakitic pluton in the Cathaysian Block. This pluton is related to an Fe deposit.…”

Section: Discussionmentioning

confidence: 95%

“…Furthermore, the Yongchun pluton samples have geochemical characteristics similar to those of arc magmas, which are rich in Th, U, and LREE, and depleted in Nb, Ta, and Ti (Kelemen, Hanghoj, & Greene, ). X. Zhao et al () proposed that the arc‐magmatism affinity of the Tangquan pluton can have been inherited from ancient crustal material in the Cathaysian Block. X. Liu et al () and G. Wang et al () proposed that the adakitic rocks were formed through partial melting of thickened lower crust, and that their arc‐like signatures, which are broadly comparable with those of proximal Neoproterozoic island arc rocks (including a keratophyre from the Shuangxiwu Group and associated granitoids), indicate a potential genetic relationship between the two sets of rocks.…”

Section: Discussionmentioning

confidence: 99%

“…Southeast China is characterized by widespread Mesozoic granitic rocks that have attracted much attention in recent decades because of their tectonic significance and large‐scale mineralization (X. Liu et al, ; Q. Wang et al, ; X. Zhao et al, , ). The Cretaceous granitoids are distributed mainly toward the Pacific coast, and are dominated by I‐ and A‐type granites (Li, ; Zhou et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Newly discovered Late Cretaceous adakites in South Fujian Province: Implications for the late Mesozoic tectonic evolution of Southeast China

et al. 2018

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The Yongchun pluton is a Late Cretaceous adakitic intrusion in South Fujian Province, Southeast China, with associated metal mineralization. An understanding of the Yongchun pluton is helpful in tectono‐magmatic evolutionary processes, and is important in explaining the origin of related porphyry‐type deposits. Zircons from three samples of the pluton were analyzed by laser ablation–inductively coupled plasma–mass spectrometry (LA–ICP–MS), yielding U–Pb ages of 99.50 ±0.87 Ma, 97.74 ±0.59 Ma, and 99.65 ±0.92 Ma. These ages are similar to those of the Sifang, Luoboling, and Sukeng plutons, all of which are related to Cu–Pb–Zn–Mo mineralization within the study area. The Yongchun pluton comprises high‐potassium, calc‐alkaline, metaluminous rocks, with average A/CNK values of 0.91, 87Sr/86Sr ratios of 0.705 51 to 0.706 83, εNd(t) values of −4.63 to −5.90, and two‐stage Nd model (T2DM) ages of 1.49–1.39 Ga, indicating the magmas were generated by partial melting of Mesoproterozoic continental crust mixed with mantle‐derived magmas. The pluton has geochemical characteristics typical of adakites, such as a high Sr content (average 553 ppm), and low Y (average 15.2 ppm) and Yb (average 1.61 ppm) contents, indicating that the parental magma was formed under high‐pressure conditions. The magmatism was associated with thickening of the lower crust during a change in subduction angle and convergence rate of the paleo‐Pacific Plate at 100 Ma. The compression was limited to South Fujian Province.

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Section: Resultssupporting

confidence: 71%

Section: Resultsmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Newly discovered Late Cretaceous adakites in South Fujian Province: Implications for the late Mesozoic tectonic evolution of Southeast China

et al. 2018

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Petrogenesis of the Jurassic adakitic rocks in Gan‐Hang Belt South China: Response to the Palaeo‐Pacific Plate oblique subduction

et al. 2017

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To explain the roughly contemporary magmatic activities between Cathaysia Block and both sides of the Jiangnan Orogenic Belt, we discussed the magmatic‐ore related and closely compressive tectonism in the Gan‐Hang Belt. Also, we compared the Yongping Pluton and Yinshan volcanic‐plutonic rocks in northeastern Jiangxi, and Huangshitan and other plutons in the northern Zhejiang, which were produced in the setting of compressive tectonism. We compared bimodel dikes and Sanqingshan A‐type granite in the northeastern Jiangxi, and Huanshitan and other A‐type granites in the northern Zhejiang, which formed in the setting of extension. We proposed that approximately in Middle Jurassic time (175 ± 5 Ma), South China entered into the tectonic system, roughly from south to north oblique subduction of the Paleo‐Pacific Plate. The intermission period of the magmatic activities in Japan and South Korea (~170–120 Ma) was actually the period of the large‐scale magmatic‐ore forming activities in South China. Thus, this oblique subduction resulted in the dynamic imbalance and mutual movement from the deep part to the shallow part of the crust among surrounding blocks of South China and the multiple blocks of South China including those orogens between the North and South China blocks, between the Yangtze Craton and Cathayasian Block, and between the South China Block and Indosinian Block, as well as microcontinental blocks within Cathaysia Block. At present, we cannot rule out the influence of compressional–extensional tectonism for the Gan‐Hang Belt controlled by the Paleo‐Asia tectonic system.

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Petrogenesis and tectonic setting of Carboniferous hornblende gabbros of the northern Great Xing'an Range, NE China: Constraints from geochronology, geochemistry, mineral chemistry, and zircon Hf isotopes

et al. 2017

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This study presents new information on the petrogenesis and tectonic setting of a hornblende gabbro in the northern Great Xing'an Range of northeastern China using new whole‐rock geochemical, mineral geochemical, and in situ zircon U–Pb and Hf isotopic data obtained for samples taken from near the town of Tayuan. Zircon U–Pb dating indicates that the hornblende gabbro was emplaced during the late Carboniferous (~311 Ma). The hornblende gabbros are alkaline with high K2O + Na2O (4.25–6.42 wt.%), low SiO2 (41.69–50.22 wt.%), and variable MgO (4.49–7.16 wt.%) and TiO2 (1.23–2.77 wt.%) contents. The pressure and temperature conditions of gabbro crystallization were determined using amphibole–plagioclase and amphibole thermobarometry, which indicate that the Tayuan hornblende gabbro formed at pressures of 4.1–6.9 kbar and temperatures of 686–762 °C, respectively. The hornblende gabbros are enriched in light rare earth elements and large ion lithophile elements, are depleted in the heavy rare earth elements and high field strength elements, and have positive zircon εHf(t) values (+3.9 to +9.9), all of which are indicative of formation from magmas generated by the partial melting of a depleted region of the lithospheric mantle that was previously metasomatized by subducted slab‐derived fluids and/or melts just before the generation of the hornblende gabbro magmas. The field observational, geochronological, geochemical, mineral geochemical, and zircon Hf isotopic data presented here are indicative of a complex petrogenetic history that involved crystal fractionation and magma mixing. These hornblende gabbros were emplaced in an extensional setting associated with the collision of the Xing'an and Songnen massifs.

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Compression between microcontinents in the Cathaysian Block during the early Yanshanian: petrogenesis of the Tangquan pluton in Southwest Fujian Province, Southeast China

Cited by 12 publications

References 143 publications

Newly discovered Late Cretaceous adakites in South Fujian Province: Implications for the late Mesozoic tectonic evolution of Southeast China

Newly discovered Late Cretaceous adakites in South Fujian Province: Implications for the late Mesozoic tectonic evolution of Southeast China

Petrogenesis of the Jurassic adakitic rocks in Gan‐Hang Belt South China: Response to the Palaeo‐Pacific Plate oblique subduction

Petrogenesis and tectonic setting of Carboniferous hornblende gabbros of the northern Great Xing'an Range, NE China: Constraints from geochronology, geochemistry, mineral chemistry, and zircon Hf isotopes

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