Material Source of Sediments from West Clarion–Clipperton Zone (Pacific): Evidence from Rare Earth Element Geochemistry and Clay Minerals Compositions
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, part...
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MDPI AG
2022-07-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/10/8/1052 |
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| author | Zhongrong Qiu Chunhui Tao Weilin Ma Ágata Alveirinho Dias Siyi Hu Yuexiao Shao Kehong Yang Weiyan Zhang |
| author_facet | Zhongrong Qiu Chunhui Tao Weilin Ma Ágata Alveirinho Dias Siyi Hu Yuexiao Shao Kehong Yang Weiyan Zhang |
| author_sort | Zhongrong Qiu |
| collection | DOAJ |
| description | 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”. |
| first_indexed | 2024-03-09T04:16:00Z |
| format | Article |
| id | doaj.art-a93dcffe32cc42848df2af41745d413e |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-09T04:16:00Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-a93dcffe32cc42848df2af41745d413e2023-12-03T13:54:02ZengMDPI AGJournal of Marine Science and Engineering2077-13122022-07-01108105210.3390/jmse10081052Material Source of Sediments from West Clarion–Clipperton Zone (Pacific): Evidence from Rare Earth Element Geochemistry and Clay Minerals CompositionsZhongrong Qiu0Chunhui Tao1Weilin Ma2Ágata Alveirinho Dias3Siyi Hu4Yuexiao Shao5Kehong Yang6Weiyan Zhang7Ocean College, Zhejiang University, Zhoushan 316000, ChinaOcean College, Zhejiang University, Zhoushan 316000, ChinaKey Laboratory of Submarine Geosciences, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, ChinaInstitute of Science and Environment, University of Saint Joseph, Rua de Londres 106, Macao, ChinaKey Laboratory of Submarine Geosciences, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, ChinaDepartment of Earth Sciences, School of Physical Sciences, University of Adelaide, Adelaide 5005, AustraliaKey Laboratory of Submarine Geosciences, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, ChinaKey Laboratory of Submarine Geosciences, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, ChinaThe 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”.https://www.mdpi.com/2077-1312/10/8/1052Clarion–Clipperton Zonesediments geochemistrymaterial sourcerare earth elements |
| spellingShingle | 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 Journal of Marine Science and Engineering Clarion–Clipperton Zone sediments geochemistry material source rare earth elements |
| title | Material Source of Sediments from West Clarion–Clipperton Zone (Pacific): Evidence from Rare Earth Element Geochemistry and Clay Minerals Compositions |
| title_full | Material Source of Sediments from West Clarion–Clipperton Zone (Pacific): Evidence from Rare Earth Element Geochemistry and Clay Minerals Compositions |
| title_fullStr | Material Source of Sediments from West Clarion–Clipperton Zone (Pacific): Evidence from Rare Earth Element Geochemistry and Clay Minerals Compositions |
| title_full_unstemmed | Material Source of Sediments from West Clarion–Clipperton Zone (Pacific): Evidence from Rare Earth Element Geochemistry and Clay Minerals Compositions |
| title_short | Material Source of Sediments from West Clarion–Clipperton Zone (Pacific): Evidence from Rare Earth Element Geochemistry and Clay Minerals Compositions |
| title_sort | material source of sediments from west clarion clipperton zone pacific evidence from rare earth element geochemistry and clay minerals compositions |
| topic | Clarion–Clipperton Zone sediments geochemistry material source rare earth elements |
| url | https://www.mdpi.com/2077-1312/10/8/1052 |
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