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Publication details

Document type
Journal articles

Document subtype
Full paper

Title
Material Source of Sediments from West Clarion–Clipperton Zone (Pacific): Evidence from Rare Earth Element Geochemistry and Clay Minerals Compositions

Participants in the publication
Zhongrong Qiu (Author)
Chunhui Tao (Author)
Weilin Ma (Author)
Ágata Alveirinho Dias (Author)
Instituto Dom Luiz (IDL), Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749–016, Lisboa, Portugal
 Dep. Geologia
 Siyi Hu (Author)
Yuexiao Shao (Author)
Kehong Yang (Author)
Weiyan Zhang (Author)

Summary
The geochemistry and mineralogy of sediments provide relevant information for the understanding of the origin and metallogenic mechanism of ferromanganese nodules and crusts. At present, there are still few studies on the sediment origin of the Clarion–Clipperton Zone (CCZ) of the east Pacific, particularly on the systematic origin of sediments with a longer history/length. Here, bulk sediment geochemistry and clay mineral compositions were analyzed on a 5.7 m gravity core (GC04) obtained at the CCZ, an area rich in polymetallic nodules. The results indicate that the average total content of rare earth elements (REE), including yttrium (REY), in sediments is 454.7 ppm and the REEs distribution patterns normalized by the North American Shale Composite of samples are highly consistent, with all showing negative Ce anomalies and more obvious enrichment in heavy REE (HREE) than that of light REE (LREE). Montmorillonite/illite ratio, discriminant functions and smear slide identification indicate multiple origins for the material, and are strongly influenced by contributions from marine biomass, while terrestrial materials, seamount basalts and their alteration products and authigenic source also make certain contributions. The REY characteristics of the sediments in the study area are different from those of marginal oceanic and back-arc basins, and more similar to pelagic deep-sea sediments. Based on LREE/HREE-1/δCe and LREE/HREE-Y/Ho diagrams, we conclude that samples from the study area had pelagic sedimentary properties which suffered from a strong “seawater effect”.

Date of Publication
2022-07-31

Institution
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA

Where published
Journal of Marine Science and Engineering

Publication Identifiers
ISSN - 2077-1312

Publisher
MDPI AG

Volume
10
Number
8

Starting page
1052

Document Identifiers
DOI - https://doi.org/10.3390/jmse10081052
URL - http://dx.doi.org/10.3390/jmse10081052

Keywords
Hydrothermal processes sediments geochemistry


Export

APA
Zhongrong Qiu, Chunhui Tao, Weilin Ma, Ágata Alveirinho Dias, Siyi Hu, Yuexiao Shao, Kehong Yang, Weiyan Zhang, (2022). Material Source of Sediments from West Clarion–Clipperton Zone (Pacific): Evidence from Rare Earth Element Geochemistry and Clay Minerals Compositions. Journal of Marine Science and Engineering, 10, ISSN 2077-1312. eISSN . http://dx.doi.org/10.3390/jmse10081052

IEEE
Zhongrong Qiu, Chunhui Tao, Weilin Ma, Ágata Alveirinho Dias, Siyi Hu, Yuexiao Shao, Kehong Yang, Weiyan Zhang, "Material Source of Sediments from West Clarion–Clipperton Zone (Pacific): Evidence from Rare Earth Element Geochemistry and Clay Minerals Compositions" in Journal of Marine Science and Engineering, vol. 10, 2022. 10.3390/jmse10081052

BIBTEX
@article{56920, author = {Zhongrong Qiu and Chunhui Tao and Weilin Ma and Ágata Alveirinho Dias and Siyi Hu and Yuexiao Shao and Kehong Yang and Weiyan Zhang}, title = {Material Source of Sediments from West Clarion–Clipperton Zone (Pacific): Evidence from Rare Earth Element Geochemistry and Clay Minerals Compositions}, journal = {Journal of Marine Science and Engineering}, year = 2022, volume = 10 }