扬子克拉通庙湾异剥钙榴岩的发现及其石榴子石U-Pb定年

doi:10.3799/dqkx.2025.285

扬子克拉通庙湾异剥钙榴岩的发现及其石榴子石U-Pb定年

doi: 10.3799/dqkx.2025.285

吕畅^1,2,
王浩^1,2, ,,
杨进辉^1,2,
吴石头^1,2,
闫垚琪^1,2

1. 中国科学院地质与地球物理研究所, 岩石圈演化与环境演变全国重点实验室, 北京 100029
2. 中国科学院大学地球与行星科学学院, 北京 100049

基金项目:

国家自然科学基金项目(42322203、 42288201)、地球深部探测与矿产资源勘查国家科技重大专项(2024ZD1001306，2025ZD1005300)、和中国科学院项目(XDB0710000)资助

详细信息

作者简介:
吕畅（2000-），男，硕士研究生，岩石学专业，研究方向主要为前寒武纪陆壳演化. E-mail: lvchang@mail.iggcas.ac.cn

通讯作者:
王浩,男,1986年生,博士,研究员,主要从事前寒武纪地质学研究.E-mail:wanghao@mail.iggcas.ac.cn,ORCID:0000-0002-0021-7563

中图分类号: P597.3
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出版历程
- 收稿日期: 2025-11-15
- 网络出版日期: 2026-01-05

Discovery of rodingite in the Miaowan area of the Yangtze craton and its Garnet U-Pb Geochronology

Lü Chang^1,2,
Wang Hao^{1,2
, ,},
Yang Jinhui^1,2,
Wu Shitou^1,2,
Yan Yaoqi^1,2

1. State Key Laboratory of Lithospheric and Environmental Coevolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029
2. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049

摘要

摘要: 庙湾蛇绿混杂岩是扬子克拉通出露的规模最大的超基性-基性混杂岩体之一，但因缺乏可靠的年代学约束，其构造演化过程尚不明确。本研究在湖北宜昌庙湾蛇绿岩套中首次识别并厘定了一种异剥钙榴岩（命名为庙湾异剥钙榴岩），同时对其石榴子石进行了主微量元素分析和高分辨率的LA-SF-ICP-MS原位微区U-Pb定年。庙湾异剥钙榴岩呈脉状产出于蛇纹石化橄榄岩中，主要矿物包括石榴子石、透辉石、葡萄石等。对石榴子石进行直接原位U-Pb定年，获得了897±24Ma的精确年龄，该年龄被解释为异剥钙榴岩的形成时代。庙湾异剥钙榴岩的发现为证明庙湾超基性-基性混杂岩属于洋壳残片提供了关键的岩石学证据。岩石产状、矿物组合及石榴子石主微量元素特征则指示该异剥钙榴岩的形成可能与洋底蛇纹石化富Ca流体交代有关。结合前人研究揭示庙湾蛇绿岩形成于≥900Ma，指示扬子克拉通陆核区在新元古代早期可能还存在一个有限的洋盆。
- 扬子克拉通 /
- 庙湾蛇绿岩 /
- 异剥钙榴岩 /
- 石榴子石U-Pb定年
Abstract: The Miaowan ophiolitic complex in the Yangtze Craton represents one of the largest exposed ultramafic-mafic complexes, yet its tectonic evolution remains contentious due to lack of robust geochronological constraints. Here, we report the first discovery of rodingite (named the Miaowan rodingite) from the Miaowan ophiolite in Yichang, Hubei Province. We present comprehensive major and trace element data, together with high-resolution in-situ U-Pb dating for garnets from this rock using LA-SF-ICP-MS. The Miaowan rodingite occurs as veins within serpentinized peridotite and is primarily composed of garnet, diopside, and prehnite. In-situ dating of garnet grains yielded a precise lower intercept age of 897±24 Ma, which is interpreted as the timing of rodingitization. This discovery offers key petrological evidence for the oceanic crust origin of the Miaowan complex. The field relationships, mineral assemblage, and geochemistry of garnets consistently suggest that the rodingite was formed by metasomatism involving Ca-rich fluids derived from serpentinization in an oceanic setting. Integrated with previous studies, our results reveal that the Miaowan ophiolite formed at ≥900Ma, implying the possible existence of a limited oceanic basin in the Yangtze cratonic nucleus during early Neoproterozoic.
- Yangtze Craton /
- Miaowan Ophiolite /
- rodingite /
- garnet U-Pb age

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参考文献(44)

Bach, W., Klein, F., 2009. The Petrology of Seafloor Rodingites: Insights from Geochemical Reaction Path Modelling. Lithos, 112: 103-117. https://doi.org/10.1016/j.lithos.2008.10.022
Cannaò, E., 2025. Unveiling Rodingite Metasomatism Using B and Sr Isotopes: Insights from the Voltri Massif, Western Ligurian Alps, Italy. Chemical Geology, 697: 123125. https://doi.org/10.1016/j.chemgeo.2025.123125
Dai, J. G., Wang, C. S., Liu, S. A., et al., 2016. Deep Carbon Cycle Recorded by Calcium‐Silicate Rocks (Rodingites) in a Subduction‐Related Ophiolite. Geophysical Research Letters, 43: 11635-11643. https://doi.org/10.1002/2016GL070474
Deng, H., Peng, S. B., Polat, A., et al., 2017. Neoproterozoic IAT Intrusion into Mesoproterozoic MOR Miaowan Ophiolite, Yangtze Craton: Evidence for Evolving Tectonic Settings. Precambrian Research, 289: 75-94. https://doi.org/10.1016/j.precamres.2016.12.003
Fettes, D., Desmons, J., 2007. Metamorphic Rocks-A Classification and Glossary of Terms. Cambridge University Press, Cambridge, 244.
Frost, B. R., Evans, K. A., Swapp, S. M., et al., 2013.The Process of Serpentinization in Dunite from New Caledonia. Lithos, 178: 24-39. https://doi.org/10.1016/j.lithos.2013.02.002
Han, Q. S., Peng, S. B., Kusky, T. M., 2017. A Paleoproterozoic Ophiolitic Mélange, Yangtze craton, South China: Evidence for Paleoproterozoic Suturing and Microcontinent Amalgamation. Precambrian Research, 293: 13-38. https://doi.org/10.1016/j.precamres.2017.03.004
Haws, A. A., Starr, P. G., Dragovic, B., et al., 2021. Meta-Rodingite Dikes as Recorders of Subduction Zone Metamorphism and Serpentinite Dehydration: Voltri Ophiolite, Italy. Chemical Geology, 565: 120077. https://doi.org/10.1016/j.chemgeo.2021.120077
Jiang, X. F., Peng, S. B., Polat, A., et al., 2016. Geochemistry and Geochronology of Mylonitic Metasedimentary Rocks Associated with the Proterozoic Miaowan Ophiolite Complex, Yangtze Craton, China: Implications for Geodynamic Events. Precambrian Research, 279: 37-56. https://doi.org/10.1016/j.precamres.2016.04.004
Li, X. P., Zhang, L., Wei, C., et al., 2007. Petrology of Rodingite Derived from Eclogite in Western Tianshan, China. Journal of Metamorphic Geology, 25: 363-382. https://doi.org/10.1111/j.1525-1314.2007.00700.x
Li, X. P. ,Duan, W. Y., Zhao, L. Q., et al., 2017. Rodingites from the Xigaze Ophiolite, Southern Tibet - New Insights into the Processes of Rodingitization. European Journal of Mineralogy, 29(5): 821-837. https://doi.org/10.1127/ejm/2017/0029-2633
Li, J. Y., Wang, X. L., Wang, D., et al., 2021. Pre-Neoproterozoic Continental Growth of the Yangtze Block: From Continental Rifting to Subduction–Accretion. Precambrian Research, 355: 106081. https://doi.org/10.1016/j.precamres.2020.106081
Ling, W. L., Gao, S., Zheng, H. F., et al., 1998. Sm-Nd Geochronology of Kongling Complex in Huangling Area of the Yangtze Craton. Chinese Science Bulletin, 43(01): 86-89 (in Chinese).
Lu, K., Li, X. H., Zhou, J. L., et al., 2020. Early Neoproterozoic Assembly of the Yangtze Block Decoded from Metasedimentary Rocks of the Miaowan Complex. Precambrian Research, 346: 105787. https://doi.org/10.1016/j.precamres.2020.105787
Lu, S. S., Tong, X. R., Wu, N. W., et al., 2025. Mesoproterozoic Tectonic Characteristics of Shennongjia Group in Northern Margin of Yangtze Craton: Constraints from Detrital Zircon U-Pb Geochronology. Earth Science, 50(7): 2613-2627 (in Chinese with English abstract).
Millonig, L. J., Albert, R., Gerdes, A., et al., 2020. Exploring Laser Ablation U-Pb Dating of Regional Metamorphic Garnet - the Straits Schist, Connecticut, USA. Earth and Planetary Science Letters. 552: 116589. https://doi.org/10.1016/j.epsl.2020.116589.
Ni, Z. Y., Zhai, M. G., Zhao, T. P., et al., 2005. Petrology of Rodingites and Their Petrogenetical Significance. Advances in Earth Science, 04: 407-413 (in Chinese with English abstract).
Palandri, J. L., Reed, M. H., 2004. Geochemical Models of Metasomatism in Ultramafic Systems: Serpentinization, Rodingitization, and Sea Floor Carbonate Chimney Precipitation. Geochimica et Cosmochimca Acta, 68: 1115-1133. https://doi.org/10.1016/j.gca.2003.08.006
Peng, S. B., Li, C. N., Kusky, T. M., et al., 2010. Discovery and Its Tectonic Significance of the Proterozoic Miaowan Ophiolites in the Southern Huangling Anticline, Western Hubei, China. Geological Bulletin of China, 29(1): 8-20 (in Chinese with English abstract).
Peng, S. B., Kusky, T. M., Zhou, H. W., et al., 2012. New Research Progress on the Pre-Sinian Tectonic Evolution and Neotectonics of the Huangling Anticline Region, South China. Journal of Earth Science, 23(5): 639-647. https://doi.org/10.1007/s12583-012-0285-y
Qiu, X. F., Yang, H. M., Zhang, L. G., et al., 2015. Geochronology of Serpentinized Harzburgite in Miaowan Ophiolite, Yangtze Block and Its Tectonic Implications. Earth Science, 40(07): 1121-1128 (in Chinese with English abstract).
Qiu, X. F., Peng, L. H, Kong, L. Y., et al., 2024. Discovery of Eoarchean Gneisses in Northern Dabie Belt. Earth Science, 49(11): 3960-3970 (in Chinese with English abstract).
Ran, J., Wang, H., Yang, J. H., et al., 2024. Direct Dating Rodingitization in the Northern North China Craton Using Garnet U-Pb Geochronometry. Terra Nova, 36(4): 275-283. https://doi.org/10.1111/ter.12708
24-1486-0
Seman, S., Stockli, D. F., McLean, N. M. 2017. U-Pb Geochronology of Grossular-Andradite Garnet. Chemical Geology, 460: 106-116. https://doi.org/10.1016/j.chemgeo.2017.04.020
Shu, Q., Beranoaguirre, A., Albert, R., et al., 2024. Multi-Stage Ultrahigh Temperature Metamorphism in the Lower Crust of the Kaapvaal Craton Recorded by U-Pb Ages of Garnet. Contributions to Mineralogy and Petrology. 179(49). https://doi.org/10.1007/s00410-024-02121-4
Sun, S. S., McDonough, W. F., 1989. Chemical and Isotopic Systematics of Oceanic Basalts: Implications for Mantle Composition and Processes. Geological Society, London, Special Publications, 42(1): 313-345. https://doi.org/10.1144/GSL.SP.1989.042.01.19
Wang, Y. J., Zhang, Q. H., Li, Z. A., et al., 1995. Geochemical Research on the Taipingxi Ultramafite, Hubei Province. Hubei Geology, 9(2): 90-97 (in Chinese with English abstract).
Wu, P., Zhang, S. B., Zheng, Y. F., et al., 2024. Magmatic Record of Early Neoproterozoic Subduction-Accretion in the Northwestern Margin of the Yangtze Block, South China. Sedimentary Geology and Tethyan Geology, 44(1): 216-230 (in Chinese with English abstract). Wu, P., Wu, Y. B., Zhang, S. B., et al., 2024. Revisiting Neoproterozoic Tectono-Magmatic Evolution of the Northern Margin of the Yangtze Block, South China. Earth-Science Reviews, 255: 104825. https://doi.org/10.1016/j.earscirev.2024.104825
Wu, S. T., Wörner, G., Jochum, K. P., et al., 2019. The Preparation and Preliminary Characterisation of Three Synthetic Andesite Reference Glass Materials (ARM-1, ARM-2, ARM-3) for In Situ Microanalysis. Geostandards and Geoanalytical Research, 43(4): 567-584. https://doi.org/10.1111/ggr.12301
Xiong, X. S., Gao, R., Wang, H. Y., et al., 2016. Frozen Subduction in the Yangtze Block: Insights from the Deep Seismic Profiling and Gravity Anomaly in East Sichuan Fold Belt. Earthquake Science, 29(2): 61-70. https://doi.org/10.1007/s11589-016-0140-9
Yan, Y. Q., Wang, H., Yang, J. H., et al., 2025. Carboniferous, not Paleoproterozoic, Eclogite-Facies Metamorphism in the Northern North China Craton as Revealed by In Situ Garnet Lu-Hf and U-Pb Geochronology. Earth and Planetary Science Letters, 653: 119207. https://doi.org/10.1016/j.epsl.2025.119207
Yang, Y. H., Wu, S. T., Wang, H., et al., 2025. Three New Natural Secondary Reference Materials for In Situ Andradite U-Pb Geochronology. Journal of Analytical Atomic Spectrometry, 40(2): 326-337. https://doi.org/10.1039/D4JA00290C
Zhao, G. C., Cawood, P. A., 2012. Precambrian Geology of China. Precambrian Research, 222-223: 13-54. https://doi.org/10.1016/j.precamres.2012.09.017
Zhao, M. S., Chen, Y. X., Xiong, J. W., et al., 2023. Magnesium-Oxygen Isotope Constraints on the Origin of Rodingites in Oceanic Lithosphere. Chemical Geology, 635: 121612. https://doi.org/10.1016/j.chemgeo.2023.121612
附中文参考文献
凌文黎, 高山, 郑海飞, 等, 1998. 扬子克拉通黄陵地区崆岭杂岩Sm-Nd同位素地质年代学研究. 科学通报, 43(01): 86-89.
卢山松, 童喜润, 吴年文, 等, 2025. 扬子克拉通北缘中元古代神农架群构造属性：来自碎屑锆石U-Pb年代学的约束. 地球科学, 50(7): 2613-2627.
倪志耀, 翟明国, 赵太平, 等, 2005. 异剥钙榴岩及其岩石成因意义. 地球科学进展, 04: 407-413.
彭松柏, 李昌年, Kusky T. M., 等, 2010. 鄂西黄陵背斜南部元古宙庙湾蛇绿岩的发现及其构造意义. 地质通报, 29(01): 8-20.
邱啸飞, 杨红梅, 张利国, 等, 2015. 扬子陆块庙湾蛇绿岩中橄榄岩的同位素年代学及其构造意义. 地球科学, 40(07): 1121-1128.
邱啸飞, 彭练红, 孔令耀, 等, 2024. 北大别构造带始太古代片麻岩的发现. 地球科学, 49(11): 3960-3970.
王岳军, 张琴华, 李志安, 等, 1995. 湖北太平溪超镁铁岩的地球化学初步研究. 湖北地质, 9(2): 90-97.
吴鹏, 张少兵, 郑永飞, 等, 2024. 扬子陆块西北缘早新元古代俯冲增生过程的岩浆记录. 沉积与特提斯地质, 44(1): 216-230.

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扬子克拉通庙湾异剥钙榴岩的发现及其石榴子石U-Pb定年

doi: 10.3799/dqkx.2025.285

作者简介:
吕畅（2000-），男，硕士研究生，岩石学专业，研究方向主要为前寒武纪陆壳演化. E-mail: lvchang@mail.iggcas.ac.cn

通讯作者:
王浩,男,1986年生,博士,研究员,主要从事前寒武纪地质学研究.E-mail:wanghao@mail.iggcas.ac.cn,ORCID:0000-0002-0021-7563

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Discovery of rodingite in the Miaowan area of the Yangtze craton and its Garnet U-Pb Geochronology

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留言板

扬子克拉通庙湾异剥钙榴岩的发现及其石榴子石U-Pb定年

doi: 10.3799/dqkx.2025.285

作者简介: 吕畅（2000-），男，硕士研究生，岩石学专业，研究方向主要为前寒武纪陆壳演化. E-mail: lvchang@mail.iggcas.ac.cn

通讯作者: 王浩,男,1986年生,博士,研究员,主要从事前寒武纪地质学研究.E-mail:wanghao@mail.iggcas.ac.cn,ORCID:0000-0002-0021-7563

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出版历程

Discovery of rodingite in the Miaowan area of the Yangtze craton and its Garnet U-Pb Geochronology

计量

出版历程

目录

作者简介:
吕畅（2000-），男，硕士研究生，岩石学专业，研究方向主要为前寒武纪陆壳演化. E-mail: lvchang@mail.iggcas.ac.cn

通讯作者:
王浩,男,1986年生,博士,研究员,主要从事前寒武纪地质学研究.E-mail:wanghao@mail.iggcas.ac.cn,ORCID:0000-0002-0021-7563