牙形石生物磷灰石地球化学研究进展

张磊; 赵赫; 吕政艺; 王向东

doi:10.3799/dqkx.2025.004

Volume 50 Issue 3

Mar. 2025

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Article Navigation > Earth Science > 2025 > 50(3): 1122-1141

Zhang Lei, Zhao He, Lü Zhengyi, Wang Xiangdong, 2025. Progress in Study of Conodont Bioapatite Geochemistry. Earth Science, 50(3): 1122-1141. doi: 10.3799/dqkx.2025.004

Citation:

Zhang Lei, Zhao He, Lü Zhengyi, Wang Xiangdong, 2025. Progress in Study of Conodont Bioapatite Geochemistry. Earth Science, 50(3): 1122-1141. doi: 10.3799/dqkx.2025.004

Zhang Lei, Zhao He, Lü Zhengyi, Wang Xiangdong, 2025. Progress in Study of Conodont Bioapatite Geochemistry. Earth Science, 50(3): 1122-1141. doi: 10.3799/dqkx.2025.004

Citation:

Zhang Lei, Zhao He, Lü Zhengyi, Wang Xiangdong, 2025. Progress in Study of Conodont Bioapatite Geochemistry. Earth Science, 50(3): 1122-1141. doi: 10.3799/dqkx.2025.004

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Progress in Study of Conodont Bioapatite Geochemistry

doi: 10.3799/dqkx.2025.004

1.
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences (Wuhan), Wuhan 430078, China
2.
College of Marine Science and Technology, China University of Geosciences (Wuhan), Wuhan 430074, China

Received Date: 2024-12-02
Available Online: 2025-03-19
Publish Date: 2025-03-25

Abstract

Abstract

Conodonts, serving as a feeding apparatus in oral cavity of an extinct and taxonomically ambiguous group of marine chordates, are phosphatic microfossils composed of carbonate fluorapatite (typically around 0.5 mm in size, with a maximum of 3 mm). They exhibit strong resistance to diagenesis, which is beneficial for preserving primary seawater information. Their elemental and isotopic composition is considered a reliable carrier of paleoceanographic chemical records. Geochemical systems represented by rare earth elements and oxygen, strontium, and calcium isotopes in conodonts have played a key role in revealing seawater redox conditions, acidity and alkalinity of paleooceans, surface seawater temperature, continental weathering, and paleoclimates. Conodont geochemical studies have been not only focusing on its application in the field of paleoenvironment and paleoclimatology, but also continuously delving into the microstructure of conodonts, especially the accurate extraction, evaluation, and screening of various elemental and isotopic information, with the aim of further improving the accurate application of conodont geochemistry. This paper reviews the morphology, structure, and paleoecological characteristics of conodonts, and on this basis, summarizes the study progress of rare earth elements and oxygen, strontium, and calcium isotope geochemistry of conodonts, in order to provide reference and inspiration for the development of conodont geochemistry and its application in paleoenvironmental and paleoclimatic studies.
- conodont,
- paleoceanography,
- paleotemperature,
- continental weathering,
- rare earth elements,
- oxygen isotopes,
- strontium isotope,
- calcium isotope,
- geochemistry

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References(147)

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