峡东九龙湾剖面埃迪卡拉纪陡山沱组盖帽白云岩无机碳同位素异常成因

蔡应雄; 安志辉; 杨文武; 王宁涛; 王保忠; 梅玉萍; 丁丽雪; 杨小莉; 宋松

doi:10.3799/dqkx.2024.122

Volume 50 Issue 7

Jul. 2025

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Article Navigation > Earth Science > 2025 > 50(7): 2566-2583

Cai Yingxiong, An Zhihui, Yang Wenwu, Wang Ningtao, Wang Baozhong, Mei Yuping, Ding Lixue, Yang Xiaoli, Song Song, 2025. Origin of Inorganic Carbon Isotope Excursions in Ediacaran Doushantuo Cap Dolostone at Jiulongwan Section in East Yangtze Gorges. Earth Science, 50(7): 2566-2583. doi: 10.3799/dqkx.2024.122

Citation:

Cai Yingxiong, An Zhihui, Yang Wenwu, Wang Ningtao, Wang Baozhong, Mei Yuping, Ding Lixue, Yang Xiaoli, Song Song, 2025. Origin of Inorganic Carbon Isotope Excursions in Ediacaran Doushantuo Cap Dolostone at Jiulongwan Section in East Yangtze Gorges. Earth Science, 50(7): 2566-2583. doi: 10.3799/dqkx.2024.122

Citation:

Cai Yingxiong, An Zhihui, Yang Wenwu, Wang Ningtao, Wang Baozhong, Mei Yuping, Ding Lixue, Yang Xiaoli, Song Song, 2025. Origin of Inorganic Carbon Isotope Excursions in Ediacaran Doushantuo Cap Dolostone at Jiulongwan Section in East Yangtze Gorges. Earth Science, 50(7): 2566-2583. doi: 10.3799/dqkx.2024.122

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Origin of Inorganic Carbon Isotope Excursions in Ediacaran Doushantuo Cap Dolostone at Jiulongwan Section in East Yangtze Gorges

doi: 10.3799/dqkx.2024.122

Cai Yingxiong^{1, 2
,
,},
An Zhihui^{1, 2},
Yang Wenwu^{1, 2},
Wang Ningtao^{1, 2},
Wang Baozhong^{1, 2},
Mei Yuping^{1, 2},
Ding Lixue^{1, 2},
Yang Xiaoli^{1, 2},
Song Song^{1, 2}

1.
Hubei Key Laboratory of Paleontology and Geological Environment Evolution, Wuhan 430205, China
2.
Wuhan Center, China Geological Survey (Geosciences Innovation Center of Central South China), Wuhan 430205, China

Received Date: 2024-10-12
Available Online: 2025-07-29
Publish Date: 2025-07-25

Abstract

Abstract

Extremely negative inorganic carbon isotope values (δ¹³C_V‒PDB<‒40‰) from the Ediacaran Doushantuo cap dolostone in East Yangtze Gorges were taken as key evidence for a methane release event, but the origin of the cap dolostone remain contested. Here we investigated carbon, oxygen, sulfur, and strontium isotopes, and major and trace element compositions in both authigenic carbonates and dolostones from the Doushantuo cap dolostone at the Jiulongwan Section. Authigenic carbonates show extremely negative inorganic carbon isotope values, remarkably wide ranges of sulfur isotope values for sulfates and pyrites, a positive δ¹⁸O_{(CAS, Brt)}-δ³⁴S_{(CAS, Brt)} correlation with a low slope, and a distinctly negative Δ³³S_pyrite-δ³⁴S_pyrite correlation, which indicates that the extremely ¹³C-depleted carbonates were deposited from seawater via anaerobic oxidation of methane coupled to microbial sulfate reduction (AOM-MSR) at paleo-marine cold seeps. Redox-sensitive elements reveal that the authigenic carbonates (JF1 and JF2) were deposited in an anoxic condition, while the whole cap dolostone was deposited in transitional conditions of suboxic-anoxic-suboxic-anoxic-suboxic. Paleodepth indicators imply that the sea level in the Jiulongwan area dropped during the JF1 and JF2 stages, respectively. Results of major and trace elements and strontium isotopes demonstrate that the input of terrigenous weathered materials increased during the JF1 and JF2 stages. In Early Ediacaran Epoch, two regressions in the Jiulongwan area resulted in an anoxic environment and altered hydrochemical conditions, which is an important origin for the extremely negative inorganic carbon isotopes observed in the cap dolostone in this area.
- Ediacaran,
- Doushantuo Formation,
- cap dolomite,
- authigenic carbonate,
- negative carbon isotope excursion,
- geochemistry

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References(60)

References

Ader, M., Macouin, M., Trindade, R. I. F., et al., 2009. A Multilayered Water Column in the Ediacaran Yangtze Platform? Insights from Carbonate and Organic Matter Paired δ¹³C. Earth and Planetary Science Letters, 288(1-2): 213-227. https://doi.org/10.1016/j.epsl.2009.09.024

Algeo, T. J., Maynard, J. B., 2008. Trace-Metal Covariation as a Guide to Water-Mass Conditions in Ancient Anoxic Marine Environments. Geosphere, 4(5): 872-887. https://doi.org/10.1130/GES00174.1

An, Z. H., Jiang, G. Q., Tong, J. N., et al., 2015. Stratigraphic Position of the Ediacaran Miaohe Biota and Its Constrains on the Age of the Upper Doushantuo δ¹³C Anomaly in the Yangtze Gorges Area, South China. Precambrian Research, 271: 243-253. https://doi.org/10.1016/j.precamres.2015.10.007

Antler, G., Turchyn, A. V., Herut, B., et al., 2014. Sulfur and Oxygen Isotope Tracing of Sulfate Driven Anaerobic Methane Oxidation in Estuarine Sediments. Estuarine, Coastal and Shelf Science, 142: 4-11. https://doi.org/10.1016/j.ecss.2014.03.001

Banner, J. L., Hanson, G. N., 1990. Calculation of Simultaneous Isotopic and Trace Element Variations during Water-Rock Interaction with Applications to Carbonate Diagenesis. Geochimica et Cosmochimica Acta, 54(11): 3123-3137. https://doi.org/10.1016/0016-7037(90)90128-8

Bao, H. M., 2006. Purifying Barite for Oxygen Isotope Measurement by Dissolution and Reprecipitation in a Chelating Solution. Analytical Chemistry, 78(1): 304-309. https://doi.org/10.1021/ac051568z

Bristow, T. F., Bonifacie, M., Derkowski, A., et al., 2011. A Hydrothermal Origin for Isotopically Anomalous Cap Dolostone Cements from South China. Nature, 474(7349): 68-71. https://doi.org/10.1038/nature10096

Cai, C. F., Liu, D. W., Hu, Y. J., et al., 2023. Interlinked Marine Cycles of Methane, Manganese, and Sulfate in the Post-Marinoan Doushantuo Cap Dolostone. Geochimica et Cosmochimica Acta, 346: 245-258. https://doi.org/10.1016/j.gca.2023.02.014

Canfield, D. E., Raiswell, R., Westrich, J. T., et al., 1986. The Use of Chromium Reduction in the Analysis of Reduced Inorganic Sulfur in Sediments and Shales. Chemical Geology, 54(1-2): 149-155. https://doi.org/10.1016/0009-2541(86)90078-1

Frimmel, H. E., 2009. Trace Element Distribution in Neoproterozoic Carbonates as Palaeoenvironmental Indicator. Chemical Geology, 258(3-4): 338-353. https://doi.org/10.1016/j.chemgeo.2008.10.033

Feng, D., Gong, S. G., 2019. Progress on the Biogeochemical Process of Sulfur and Its Geological Record at Submarine Cold Seeps. Bulletin of Mineralogy, Petrology and Geochemistry, 38(6): 1047-1056, 1046 (in Chinese with English abstract).

Feng, D., Peng, Y. B., Bao, H. M., et al., 2016. A Carbonate-Based Proxy for Sulfate-Driven Anaerobic Oxidation of Methane. Geology, 44(12): 999-1002. https://doi.org/10.1130/G38233.1

Feng, D., Roberts, H. H., 2011. Geochemical Characteristics of the Barite Deposits at Cold Seeps from the Northern Gulf of Mexico Continental Slope. Earth and Planetary Science Letters, 309(1-2): 89-99. https://doi.org/10.1016/j.epsl.2011.06.017

Gong, S. G., Peng, Y. B., Bao, H. M., et al., 2018. Triple Sulfur Isotope Relationships during Sulfate-Driven Anaerobic Oxidation of Methane. Earth and Planetary Science Letters, 504: 13-20. https://doi.org/10.1016/j.epsl.2018.09.036

Guan, C. G., Wang, W., Zhou, C. M., 2024. Revisiting the Carbonate Carbon Isotopic Composition of the Lowermost Doushantuo Formation in Yichang, Hubei Province: Implications for Searching the Original Seawater Carbon Isotopic Signal. Acta Geologica Sinica, 98(3): 712-724 (in Chinese with English abstract).

Hatch, J. R., Leventhal, J. S., 1992. Relationship between Inferred Redox Potential of the Depositional Environment and Geochemistry of the Upper Pennsylvanian (Missourian) Stark Shale Member of the Dennis Limestone, Wabaunsee County, Kansas, U. S. A. . Chemical Geology, 99(1-3): 65-82. https://doi.org/10.1016/0009-2541(92)90031-Y

Higgins, J. A., Blättler, C. L., Lundstrom, E. A., et al., 2018. Mineralogy, Early Marine Diagenesis, and the Chemistry of Shallow-Water Carbonate Sediments. Geochimica et Cosmochimica Acta, 220: 512-534. https://doi.org/10.1016/j.gca.2017.09.046

Hoffman, P. F., Kaufman, A. J., Halverson, G. P., et al., 1998. A Neoproterozoic Snowball Earth. Science, 281(5381): 1342-1346. https://doi.org/10.1126/science.281.5381.1342

Hoffman, P. F., Schrag, D. P., 2002. The Snowball Earth Hypothesis: Testing the Limits of Global Change. Terra Nova, 14(3): 129-155. https://doi.org/10.1046/j.1365-3121.2002.00408.x

Horacek, M., Brandner, R., Abart, R., 2007. Carbon Isotope Record of the P/T Boundary and the Lower Triassic in the Southern Alps: Evidence for Rapid Changes in Storage of Organic Carbon. Palaeogeography, Palaeoclimatology, Palaeoecology, 252(1-2): 347-354. https://doi.org/10.1016/j.palaeo.2006.11.049

Jiang, G. Q., Kennedy, M. J., Christie-Blick, N., 2003. Stable Isotopic Evidence for Methane Seeps in Neoproterozoic Postglacial Cap Carbonates. Nature, 426(6968): 822-826. https://doi.org/10.1038/nature02201

Jiang, G. Q., Shi, X. Y., Zhang, S. H., et al., 2011. Stratigraphy and Paleogeography of the Ediacaran Doushantuo Formation (ca. 635-551 Ma) in South China. Gondwana Research, 19(4): 831-849. https://doi.org/10.1016/j.gr.2011.01.006

Jiang, G. Q., Zhang, S. H., Shi, X. Y., et al., 2008. Chemocline Instability and Isotope Variations of the Ediacaran Doushantuo Basin in South China. Science China Earth Sciences, 51(11): 1560-1569. https://doi.org/10.1007/s11430-008-0116-2

Li, C., Hardisty, D. S., Luo, G., et al., 2017. Uncovering the Spatial Heterogeneity of Ediacaran Carbon Cycling. Geobiology, 15(2): 211-224. https://doi.org/10.1111/gbi.12222

Li, D., Ling, H. F., Jiang, S. Y., et al., 2009. New Carbon Isotope Stratigraphy of the Ediacaran-Cambrian Boundary Interval from SW China: Implications for Global Correlation. Geological Magazine, 146(4): 465-484. https://doi.org/10.1017/S0016756809006268

Li, W. P., 2017. Geochemistry of Sedimentary Carbonates from the Late Ediacaran to the Early Cambrian in the Lower Yangtze Region of South China (Dissertation). University of Science and Technology of China, Hefei (in Chinese with English abstract).

Lin, Z. J., Wang, Q. X., Feng, D., et al., 2011. Post-Depositional Origin of Highly ¹³C-Depleted Carbonate in the Doushantuo Cap Dolostone in South China: Insights from Petrography and Stable Carbon Isotopes. Sedimentary Geology, 242(1-4): 71-79. https://doi.org/10.1016/j.sedgeo.2011.10.009

Lin, Z. Y., Sun, X. M., Peckmann, J., et al., 2016. How Sulfate-Driven Anaerobic Oxidation of Methane Affects the Sulfur Isotopic Composition of Pyrite: A SIMS Study from the South China Sea. Chemical Geology, 440: 26-41. https://doi.org/10.1016/j.chemgeo.2016.07.007

Liu, C., Wang, Z. R., Raub, T. D., et al., 2014. Neoproterozoic Cap-Dolostone Deposition in Stratified Glacial Meltwater Plume. Earth and Planetary Science Letters, 404: 22-32. https://doi.org/10.1016/j.epsl.2014.06.039

Lu, M., Zhu, M. Y., Zhang, J. M., et al., 2013. The DOUNCE Event at the Top of the Ediacaran Doushantuo Formation, South China: Broad Stratigraphic Occurrence and Non-Diagenetic Origin. Precambrian Research, 225: 86-109. https://doi.org/10.1016/j.precamres.2011.10.018

Montañez, I. P., Osleger, D. A., Mack, L. E., et al., 2000. Evolution of the Sr and C Isotope Composition of Cambrian Oceans. GSA Today, 10(5): 1-7.

Peng, Y. B., Bao, H. M., Jiang, G. Q., et al., 2022. A Transient Peak in Marine Sulfate after the 635 Ma Snowball Earth. Proceedings of the National Academy of Sciences of the United States of America, 119(19): e2117341119. https://doi.org/10.1073/pnas.2117341119

Porter, S. M., Knoll, A. H., Affaton, P., 2004. Chemostratigraphy of Neoproterozoic Cap Carbonates from the Volta Basin, West Africa. Precambrian Research, 130(1-4): 99-112. https://doi.org/10.1016/j.precamres.2003.10.015

Rimmer, S. M., 2004. Geochemical Paleoredox Indicators in Devonian-Mississippian Black Shales, Central Appalachian Basin (USA). Chemical Geology, 206(3-4): 373-391. https://doi.org/10.1016/j.chemgeo.2003.12.029

Sansjofre, P., Ader, M., Trindade, R. I. F., et al., 2011. A Carbon Isotope Challenge to the Snowball Earth. Nature, 478(7367): 93-96. https://doi.org/10.1038/nature10499

Shen, H. J., Gu, S. Y., Zhao, S. F., et al., 2020. The Sedimentary Geochemical Records of Ocean Environment during the Nantuo (Marinoan) Glaciation in South China-Carbon and Oxygen Isotopes and Trace Element Compositions of Dolostone in Nantuo Formation, Nanhuan System, in Eastern Guizhou. Geological Review, 66(1): 214-228 (in Chinese with English abstract).

Shi, H. Y., Sun, Y. P., Ouyang, Q., et al., 2023. U-Pb Age of Highly ¹³C-Depleted Calcite from the Basal Ediacaran Cap Carbonate in Yichang, Hubei Province. Journal of Stratigraphy, 47(1): 1-16 (in Chinese with English abstract).

Sui, Y., 2019. Cyclostratigraphic Analysis of the Ediacaran Doushantuo Formation, South China (Dissertation). China University of Geosciences, Wuhan (in Chinese with English abstract).

Tribovillard, N., Algeo, T. J., Lyons, T., et al., 2006. Trace Metals as Paleoredox and Paleoproductivity Proxies: An Update. Chemical Geology, 232(1-2): 12-32. https://doi.org/10.1016/j.chemgeo.2006.02.012

Veizer, J., 1983. Chemical Diagenesis of Carbonates: Theory and Application of Trace Element Technique. In: Arthur, M. A., Anderson, T. F., Kaplan, I. R., et al., eds., Stable Isotopes in Sedimentary Geology. SEPM, Tulsa.

Veizer, J., Ala, D., Azmy, K., et al., 1999. ⁸⁷Sr/⁸⁶Sr, δ¹³C and δ¹⁸O Evolution of Phanerozoic Seawater. Chemical Geology, 161(1-3): 59-88. https://doi.org/10.1016/S0009-2541(99)00081-9

Wang, J. S., Jiang, G. Q., Xiao, S. H., et al., 2008. Carbon Isotope Evidence for Widespread Methane Seeps in the ca. 635 Ma Doushantuo Cap Carbonate in South China. Geology, 36(5): 347-350. https://doi.org/10.1130/g24513a.1

Wang, J. S., Wang, Z., Hu, J., et al., 2012. Multiple Proxies Indicating Methane Seepage during the Neoproterozoic Cap Carbonate in South China. Earth Science, 37(S2): 14-22 (in Chinese with English abstract).

Wang, Z., 2017. The Diagenesis of Early and Middle Ediacaran Carbonate Sediments in Western Hubei and the Paleoenvironmental Implications of the Doushantuo Glendonite (Dissertation). China University of Geosciences, Wuhan (in Chinese with English abstract).

Webb, G. E., Kamber, B. S., 2000. Rare Earth Elements in Holocene Reefal Microbialites: A New Shallow Seawater Proxy. Geochimica et Cosmochimica Acta, 64(9): 1557-1565. https://doi.org/10.1016/S0016-7037(99)00400-7

Wei, G. Y., 2019. Evolution of Marine Environment from the Late Neoproterozoic to Early Paleozoic (Dissertation). Nanjing University, Nanjing (in Chinese with English abstract).

Wei, H. M., 2019. The Evolution of Shallow Ocean Redox on Edicaran Yangtze Platform (Dissertation). China University of Geosciences, Beijing (in Chinese with English abstract).

Zhou, C. M., Bao, H. M., Peng, Y. B., et al., 2010. Timing the Deposition of ¹⁷O-Depleted Barite at the Aftermath of Nantuo Glacial Meltdown in South China. Geology, 38(10): 903-906. https://doi.org/10.1130/G31224.1

Zhou, C. M., Xie, G. W., McFadden, K., et al., 2007. The Diversification and Extinction of Doushantuo-Pertatataka Acritarchs in South China: Causes and Biostratigraphic Significance. Geological Journal, 42(3-4): 229-262. https://doi.org/10.1002/gj.1062

Zhu, M. Y., Zhang, J. M., Yang, A. H., 2007. Integrated Ediacaran (Sinian) Chronostratigraphy of South China. Palaeogeography, Palaeoclimatology, Palaeoecology, 254(1-2): 7-61. https://doi.org/10.1016/j.palaeo.2007.03.025

冯东, 宫尚桂, 2019. 海底冷泉系统硫的生物地球化学过程及其沉积记录研究进展. 矿物岩石地球化学通报, 38(6): 1047-1056, 1046.

关成国, 王伟, 周传明, 2024. 湖北宜昌埃迪卡拉系陡山沱组下部无机碳同位素再研究: 探寻碳酸盐岩碳同位素组成的原始海水信号. 地质学报, 98(3): 712-724.

李伟平, 2017. 下扬子埃迪卡拉纪晚期和寒武纪早期沉积碳酸盐岩地球化学研究(博士学位论文). 合肥: 中国科学技术大学.

沈洪娟, 顾尚义, 赵思凡, 等, 2020. 华南南华纪南沱冰期海洋环境的沉积地球化学记录——来自黔东部南华系南沱组白云岩碳氧同位素和微量元素的证据. 地质论评, 66(1): 214-228.

史红毅, 孙云鹏, 欧阳晴, 等, 2023. 湖北宜昌埃迪卡拉系陡山沱组底部盖帽碳酸盐岩中具极负碳同位素值方解石的U-Pb年龄. 地层学杂志, 47(1): 1-16.

睢瑜, 2019. 华南地区埃迪卡拉纪陡山沱组旋回地层学研究(博士学位论文). 武汉: 中国地质大学.

王家生, 王舟, 胡军, 等, 2012. 华南新元古代"盖帽"碳酸盐岩中甲烷渗漏事件的综合识别特征. 地球科学, 37(S2): 14-22. https://cstj.cqvip.com/Qikan/Article/Detail?id=1003445673

王舟, 2017. 鄂西埃迪卡拉纪早中期碳酸盐岩地层成岩作用及其六水碳钙石假晶的古环境意义(博士学位论文). 武汉: 中国地质大学.

魏广祎, 2019. 新元古代晚期到古生代早期古海洋地球化学演变(博士学位论文). 南京: 南京大学.

魏昊明, 2019. 埃迪卡拉纪扬子地台浅海氧化还原状态的时空演变(博士学位论文). 北京: 中国地质大学.

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Origin of Inorganic Carbon Isotope Excursions in Ediacaran Doushantuo Cap Dolostone at Jiulongwan Section in East Yangtze Gorges

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