太平洋中部富REY深海粘土的地球化学特征及REY富集机制

朱克超; 任江波; 王海峰; 陆红锋

doi:10.3799/dqkx.2015.087

Volume 40 Issue 6

Jun. 2015

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Zhu Kechao, Ren Jiangbo, Wang Haifeng, Lu Hongfeng, 2015. Enrichment Mechanism of REY and Geochemical Characteristics of REY-Rich Pelagic Clay from the Central Pacific. Earth Science, 40(6): 1052-1060. doi: 10.3799/dqkx.2015.087

Citation:

Zhu Kechao, Ren Jiangbo, Wang Haifeng, Lu Hongfeng, 2015. Enrichment Mechanism of REY and Geochemical Characteristics of REY-Rich Pelagic Clay from the Central Pacific. Earth Science, 40(6): 1052-1060. doi: 10.3799/dqkx.2015.087

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Enrichment Mechanism of REY and Geochemical Characteristics of REY-Rich Pelagic Clay from the Central Pacific

doi: 10.3799/dqkx.2015.087

Guangzhou Marine Geological Survey, Guangzhou 510075, China

Received Date: 2014-07-24
Publish Date: 2015-06-15

Abstract

Abstract

REE resources from deep-sea sediments is a kind of newly discovered and latent REE resources deposited on the ocean floor. Mineral component, major element and rare earth element analysis of 90 pelagic clay samples by piston core from the central Pacific have been conducted and compared with the geochemical chemistry of pelagic sediments from the central North Pacifc and Minami-Torishima area in the western North Pacific in this study. The results show that the pelagic clay from the central Pacific is rich in phillipsite, P, and REY, and significant fish teeth debris are contained in detrital component of pelagic clay; CaO and P₂O₅, CaO, P₂O₅ and ∑REY are positively correlated, and characterized by clear Ce negative anomaly and certain HREE enrichment and Y positive anomaly in REE distribution. The REY enrichment of pelagic clay from the central Pacific is mainly caused by excess phosphate component which may have resulted from the fish teeth debris mixed in the pelagic clay. The REY enrichment mechanism of REY-rich pelagic sediments in the North Pacific with no hydrothermal effect shows uniformity and universality, which can be attributed to the admixture of high-REY phosphate in the pelagic clay.
- central Pacific,
- pelagic clay,
- sediment,
- REY-rich deep-sea mud,
- phosphate,
- geochemistry

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References(24)

References

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