白云岩Mg同位素特征及其在岛屿-盆地研究中的进展

许红; 闫琢玉; 付和平; 王修齐; 苏大鹏

doi:10.3799/dqkx.2025.047

Volume 50 Issue 8

Aug. 2025

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Xu Hong, Yan Zhuoyu, Fu Heping, Wang Xiuqi, Su Dapeng, 2025. Characterization of Mg Isotopes in Dolomites and Advances in Island-Basin Studies. Earth Science, 50(8): 3225-3240. doi: 10.3799/dqkx.2025.047

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Xu Hong, Yan Zhuoyu, Fu Heping, Wang Xiuqi, Su Dapeng, 2025. Characterization of Mg Isotopes in Dolomites and Advances in Island-Basin Studies. Earth Science, 50(8): 3225-3240. doi: 10.3799/dqkx.2025.047

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Characterization of Mg Isotopes in Dolomites and Advances in Island-Basin Studies

doi: 10.3799/dqkx.2025.047

Xu Hong^{1, 2, 3
,
,},
Yan Zhuoyu^{4, 5, 6
,
,
,},
Fu Heping⁷,
Wang Xiuqi^{2, 5},
Su Dapeng^{2
,
,
,}

1.
School of Geosciences, Yangtze University, Wuhan 434100, China
2.
Qingdao Institute of Marine Geology, Ministry of Land and Resources, Shandong 266237, China
3.
First Institute of Oceanography, Ministry of Natural Resources, Shandong 266061, China
4.
Engineering Technology Branch, CNOOC Energy Development Co., LTD., Tianjin 300450, China
5.
School of Geosciences, China University of Geosciences, Wuhan 430074, China
6.
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China
7.
PetroChina Changqing Oilfield Company, Xi 'an 710016, China

Received Date: 2024-10-12
Publish Date: 2025-08-25

Abstract

Abstract

Since the discovery of dolomite 233 years ago, it is still the forefront of basic research. Mg isotope, as a key isotope in the formation of dolomite, has become a new hotspot in the study of dolomite. The research progress on the characteristics of magnesium and magnesium isotopes in geological storage, fractionation, magnesium cycling and biogenic magnesium isotopes are briefly reviewed. The characteristics of Mg isotope, fluid direction and stratigraphic sequence in dolomite cores collected from Xisha Islands since Neogene reef were studied. Taking the study of deep-deep and ultra-deep dolomite magnesium isotope reservoirs for oil and gas exploration in sedimentary basins in western China as an example, this paper briefly introduces the evaluation results of magnesium isotope study. Progress has been made in the study of magnesium isotopes in the fields of paleo-ocean reconstruction, global continents, ocean and earth interior magnesium storage and magnesium cycling, which has promoted the discussion of frontier issues of dolomite, and strengthened the understanding of dolomite formation and mechanism.

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References(90)

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Characterization of Mg Isotopes in Dolomites and Advances in Island-Basin Studies

doi: 10.3799/dqkx.2025.047

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