International  Center  for  Isotope  Effects  Research

Nanjing University

Haoran Ma

Position: Post-Doc
Office: B-215


Reasearch interest: 1) Triple oxygen isotope in sediments, 2) Biogeochemical cycle of Snowball Earth, 3) Planetary sciences


2010.9-2014.7, Bachelor, Peking University

2014.9-2021.7, PhD, Peking University

2019.7-2020.8, Visiting Scholar, Louisiana State University

2021.7-present, Post-Doc, Nanjing University


Awards and honors

Excellent Graduates in Peking University, 2021.

Outstanding Paper of Acta Geochimica, 2019

Founder Scholarship in Peking University, 2017

Longruan Technology Scholarship in Peking University, 2014



30. Wang, R., Shen, B., Lang, X., Wen, B., Mitchell, R.N., Ma, H., Yin, Z., Peng, Y., Liu, Y. and Zhou, C. (2023) A Great late Ediacaran ice age. National Science Review, nwad117.


29. Wei, R., Ma, H., Jin, Z., Wang, T., Zhang, C., Wang, Y. and Dong, L. (2023) New insights into the carbon cycle and depositional models of the Eocene saline lake, Jianghan basin, China. Marine and Petroleum Geology 149.


28. Li, C., Dong, L., Ma, H., Liu, H., Li, C., Pei, H. and Shen, B. (2022) Formation of the massive bedded chert and coupled Silicon and Iron cycles during the Ediacaran-Cambrian transition. Earth and Planetary Science Letters 594


27. Jia, T., Wang, R., Huang, T., Lang, X., Ma, H.* and Shen, B. (2022) Constraining the redox landscape of Mesoproterozoic mat grounds: A possible oxygen oasis in the ‘Boring Billion’ seafloor. Precambrian Research 376, 106681.


26. Liu, Y., Ding, W., Lang, X., Xing, C., Wang, R., Huang, K., Fu, B., Ma, H., Peng, Y. and Shen, B. (2022) Refining the early Cambrian marine redox profile by using pyrite sulfur and iron isotopes. Global and Planetary Change 213, 103817.


25. Ma, H., Shen, B., Lang, X., Peng, Y., Huang, K., Huang, T., Fu, Y. and Tang, W. (2022) Active biogeochemical cycles during the Marinoan global glaciation. Geochimica et Cosmochimica Acta 321, 155-169.


24. Xing, C., Lang, X., Ma, H., Peng, Y., Peng, Y., Liu, Y., Wang, R., Ning, M., Cui, Y., Yu, X. and Shen, B. (2021) Predominant microbial iron reduction in sediment in early Cambrian sulfidic oceans. Global and Planetary Change 206, 103637.


23. Ma, H., Dong, L., Shen, B., Qiu, X., Peng, Y., Xiang, K., Ning, M. and Sun, Y. (2021) Sulfur and oxygen isotopic compositions of carbonate associated sulfate (CAS) of Cambrian ribbon rocks: Implications for the constraints on using CAS to reconstruct seawater sulfate sulfur isotopic compositions. Chemical Geology 580, 120369.


22. Lang, X., Zhao, Z., Ma, H., Huang, K., Li, S., Zhou, C., Xiao, S., Peng, Y., Liu, Y. and Tang, W. (2021) Cracking the superheavy pyrite enigma: possible roles of volatile organosulfur compound emission. National Science Review 8(10), nwab034.


21. Ning, M., Yang, F., Ma, H., Lang, X. and Shen, B. (2021) Precipitation of Marinoan cap carbonate from Mn-enriched seawater. Earth-Science Reviews 218, 103666.


20. Cui, Y., Shen, B., Sun, Y., Ma, H., Chang, J., Li, F., Lang, X. and Peng, Y. (2021) A pulse of seafloor oxygenation at the Late Devonian Frasnian-Famennian boundary in South China. Earth-Science Reviews 218, 103651.


19. Zhao, Z., Shen, B., Zhu, J.-M., Lang, X., Wu, G., Tan, D., Pei, H., Huang, T., Ning, M. and Ma, H. (2021) Active methanogenesis during the melting of Marinoan snowball Earth. Nature communications 12, 1-9.


18. He, R., Ning, M., Huang, K., Ma, H. and Shen, B. (2020) Mg isotopic systematics during early diagenetic aragonite-calcite transition: Insights from the Key Largo Limestone. Chemical Geology 558, 119876.


17. Peng, Y., Dong, L., Ma, H., Wang, R., Lang, X., Peng, Y., Qin, S., Liu, W. and Shen, B. (2020) Surface ocean nitrate-limitation in the aftermath of Marinoan snowball Earth: Evidence from the Ediacaran Doushantuo Formation in the western margin of the Yangtze Block, South China. Precambrian Research 347, 105846.


16. Lang, X., Tang, W., Ma, H. and Shen, B. (2020) Local environmental variation obscures the interpretation of pyrite sulfur isotope records. Earth and Planetary Science Letters 533, 116056.


15. Li, F., Lang, X., Ma, H., Cui, Y., Pei, H. and Shen, B. (2020) Heterogeneous seawater phosphorus concentrations during the Sturtian glaciation: Evidence from P/Fe ratios of Fulu Formation ironstone in South China. Palaeogeography, Palaeoclimatology, Palaeoecology 537, 109409.


14. Ding, W., Dong, L., Sun, Y., Ma, H., Xu, Y., Yang, R., Peng, Y., Zhou, C. and Shen, B. (2019) Early animal evolution and highly oxygenated seafloor niches hosted by microbial mats. Scientific Report 9, 13628.


13. Cui, Y., Lang, X., Li, F., Huang, K., Ma, H., Li, C., Pei, H., Li, C., Zhou, C. and Shen, B. (2019) Germanium/silica ratio and rare earth element composition of silica-filling in sheet cracks of the Doushantuo cap carbonates, South China: Constraining hydrothermal activity during the Marinoan snowball Earth glaciation. Precambrian Research 332, 105407.


12. Ning, M., Huang, K., Lang, X., Ma, H., Yuan, H., Peng, Y. and Shen, B. (2019) Can crystal morphology indicate different generations of dolomites? Evidence from magnesium isotopes. Chemical Geology 516, 1-17.


11. Wang, Z., Guo, W., Nie, T., Ma, H., Huang, T., Sun, Y. and Shen, B. (2019) Is seawater geochemical composition recorded in marine carbonate? Evidence from iron and manganese contents in Late Devonian carbonate rocks. Acta Geochimica 38(2), 173-189.


10. Lang, X., Shen, B., Peng, Y., Xiao, S., Zhou, C., Bao, H., Kaufman, A.J., Huang, K., Crockford, P.W., Liu, Y., Tang, W. and Ma, H. (2018) Transient marine euxinia at the end of the terminal Cryogenian glaciation. Nature Communication 9, 3019.


9. Shen, B., Ma, H., Ye, H., Lang, X., Pei, H., Zhou, C., Zhang, S. and Yang, R. (2018) Hydrothermal origin of syndepositional chert bands and nodules in the Mesoproterozoic Wumishan Formation: Implications for the evolution of Mesoproterozoic cratonic basin, North China. Precambrian Research 310, 213-228.


8. Ma, H., Xu, Y., Huang, K., Sun, Y., Ke, S., Peng, Y., Lang, X., Yan, Z. and Shen, B. (2017) Heterogeneous Mg isotopic composition of the early Carboniferous limestone: implications for carbonate as a seawater archive. Acta Geochimica 37, 1-18.


7. Huang, K., Shen, B., Lang, X., Tang, W., Peng, Y., Ke, S., Kaufman, A.J., Ma, H. and Li, F. (2015) Magnesium isotopic compositions of the Mesoproterozoic dolostones: Implications for Mg isotopic systematics of marine carbonates. Geochimica et Cosmochimica Acta 164, 333-351.


6. Li, F., Teng, F., Chen, J., Huang, K., Wang, S., Lang, X., Ma, H., Peng, Y. and Shen, B. (2016). "Constraining ribbon rock dolomitization by Mg isotopes: Implications for the ‘dolomite problem’." Chemical Geology 445, 208-220.


5. Lang, X., Shen, B., Peng, Y., Huang, K., Lv, J. and Ma, H. (2016) Ocean oxidation during the deposition of basal Ediacaran Doushantuo cap carbonates in the Yangtze Platform, South China. Precambrian Research 281, 253-268.


4. Peng, Y., Peng, Y., Lang, X., Ma, H., Huang, K., Li, F. and Shen, B. (2016) Marine Carbon-Sulfur Biogeochemical Cycles during the Steptoean Positive Carbon Isotope Excursion (SPICE) in the Jiangnan Basin, South China. Journal of Earth Science 27, 242-254.


3. Peng, Y., Shen, B., Lang, X., Huang, K., Chen, J., Yan, Z., Tang, W., Ke, S., Ma, H. and Li, F. (2016) Constraining dolomitization by Mg isotopes: A case study from partially dolomitized limestones of the middle Cambrian Xuzhuang Formation, North China. Geochemistry, Geophysics, Geosystems, 17(3), 1109-1129.


2. Huang, K.J., Teng, F.Z., Shen, B., Xiao, S., Lang, X., Ma, H.R., Fu, Y. and Peng, Y. (2016) Episode of intense chemical weathering during the termination of the 635 Ma Marinoan glaciation. Proceedings of the National Academy Sciences 113, 14904-14909.


1. Dong, L., Shen, B., Lee, C.-T.A., Shu, X.-j., Peng, Y., Sun, Y., Tang, Z., Rong, H., Lang, X., Ma, H., Yang, F. and Guo, W. (2015) Germanium/silicon of the Ediacaran-Cambrian Laobao cherts: Implications for the bedded chert formation and paleoenvironment interpretations. Geochemistry, Geophysics, Geosystems 16, 751-763.