西澳大利亚皮尔巴拉约3.455年 Ga玄武质海底岩石海底热液蚀变中的磷酸盐行为

IF 5 1区地球科学 Q1 GEOCHEMISTRY & GEOPHYSICS

Geochimica et Cosmochimica Acta Pub Date : 2025-06-18 DOI:10.1016/j.gca.2025.06.013

Yuya Tsukamoto, Takeshi Kakegawa

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引用次数: 0

摘要

磷是多种生物分子和生物化学过程的必需元素。由于可能没有大陆块体和BIF对磷的清除作用，太古代海洋普遍采用缺磷海洋模式。另一方面，最近的研究表明，太古宙海底热液活动可能会产生高磷通量，从而产生富含磷酸盐的海洋。在这里，我们对澳大利亚皮尔巴拉克拉通东皮尔巴拉地体ABDP#1岩心中的3.455 Ga顶玄武岩进行了矿物学和地球化学分析，以研究太古代海底热液活动是否可能对当代海洋起到磷酸盐来源的作用。

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Phosphate behavior during submarine hydrothermal alteration of ca. 3.455 Ga basaltic seafloor rocks from Pilbara, Western Australia

Phosphorus is an essential element for various biomolecules and biochemical processes. A phosphate-poor ocean model is popular for the Archean oceans, because of the potential absence of continental land masses and phosphorus scavenging by BIF. On the other hand, recent studies have suggested the possibility of a high phosphorus flux from Archean submarine hydrothermal activity, yielding phosphate-rich oceans. Here, we performed mineralogical and geochemical analyses for the 3.455 Ga Apex Basalt in ABDP#1 core from East Pilbara Terrane of the Pilbara Craton, Australia, to examine whether Archean submarine hydrothermal activity could play the role of a phosphate source to contemporary oceans.

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来源期刊

Geochimica et Cosmochimica Acta 地学-地球化学与地球物理

CiteScore

9.60

自引率

14.00%

发文量

437

审稿时长

6 months

期刊介绍： Geochimica et Cosmochimica Acta publishes research papers in a wide range of subjects in terrestrial geochemistry, meteoritics, and planetary geochemistry. The scope of the journal includes: 1). Physical chemistry of gases, aqueous solutions, glasses, and crystalline solids 2). Igneous and metamorphic petrology 3). Chemical processes in the atmosphere, hydrosphere, biosphere, and lithosphere of the Earth 4). Organic geochemistry 5). Isotope geochemistry 6). Meteoritics and meteorite impacts 7). Lunar science; and 8). Planetary geochemistry.

西澳大利亚皮尔巴拉约3.455年 Ga玄武质海底岩石海底热液蚀变中的磷酸盐行为

摘要

西澳大利亚皮尔巴拉约3.455年 Ga玄武质海底岩石海底热液蚀变中的磷酸盐行为