| Meng Xianwei,Chen Zhihua,Wang Xiangqin,Liu Na. 2001. Rare earth elements-rich phase and enriching mechanism in sediments from CC area, the Pacific Ocean. Acta Oceanologica Sinica, (2):209－214 |
| Rare earth elements-rich phase and enriching mechanism in sediments from CC area, the Pacific Ocean |
| Rare earth elements-rich phase and enriching mechanism in sediments from CC area, the Pacific Ocean |
| Received:March 03, 2000 Revised:October 08, 2000 |
| DOI： |
| Key words:CC area of the Pacific Ocean sediments rare earth elements REE-rich phase enriching mechanism |
| 中文关键词: CC area of the Pacific Ocean sediments rare earth elements REE-rich phase enriching mechanism |
| 基金项目:This study was supported by the R&D Project on the Oceanic Metalliferous Nodue during the "Ninth-Five-YearPlan"(No. DY95-02-10). |
| Author Name | Affiliation | | Meng Xianwei | First Institute of Oceanography, State Oceanic Administration, Qingdao 266003, China
Key Lab. of Marine Science and Numerical Modelling, State Oceanic Administration, Qingdao 266003, China | | Chen Zhihua | First Institute of Oceanography, State Oceanic Administration, Qingdao 266003, China | | Wang Xiangqin | First Institute of Oceanography, State Oceanic Administration, Qingdao 266003, China | | Liu Na | First Institute of Oceanography, State Oceanic Administration, Qingdao 266003, China |
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| Abstract: |
| Compared to North American shale composition (NASC),REE contents of sediments from the CC area in the Pacific Ocean are obviously high except that cerium has equal content to that of NASC.Three-valence rare earth elements were completely enriched in phosphate-phase and cerium in iron-phase.Rare earth elements in the sediments were originally derived from seawater.During lithigenic and minerogenic processes of metalliferous nodules,three-valence rare earth elements in sediments mobilized and incorporated into sediments as authigenous biogenic-apatite,while cerium had change from Ce3+ to Ce4+ and directly precipitated from seawater and entered metalliferous nodules and caused Ceanomalies in REE pattern in sediments. |
| 中文摘要: |
| Compared to North American shale composition (NASC),REE contents of sediments from the CC area in the Pacific Ocean are obviously high except that cerium has equal content to that of NASC.Three-valence rare earth elements were completely enriched in phosphate-phase and cerium in iron-phase.Rare earth elements in the sediments were originally derived from seawater.During lithigenic and minerogenic processes of metalliferous nodules,three-valence rare earth elements in sediments mobilized and incorporated into sediments as authigenous biogenic-apatite,while cerium had change from Ce3+ to Ce4+ and directly precipitated from seawater and entered metalliferous nodules and caused Ceanomalies in REE pattern in sediments. |
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