Rare‐Earth Elements in Deep‐Sea Sediments in the South Pacific Gyre: Source Materials and Resource Potentials
Rare‐Earth Elements in Deep‐Sea Sediments in the South Pacific Gyre: Source Materials and Resource Potentials
复制标题
南太平洋环流深海沉积物中的稀土元素:来源材料和资源潜力
DOI:
10.1029/2022gc010681
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Kato Yasuhiro
中科院分区:
文献类型:
--
作者:
Tanaka Erika;Mimura Kazuhide;Nakamura Kentaro;Ohta Junichiro;Yasukawa Kazutaka;Kato Yasuhiro
Deep‐sea sediments enriched in rare‐earth elements and yttrium (REY) plus scandium (Sc), termed “REY‐rich mud,” have attracted attention as a possible resource for these critical industrial elements. Examples have been reported from the western North Pacific, central Pacific, low‐latitude South Pacific, and eastern South Pacific. Although previous studies of pelagic clay have reported the existence of highly REY‐rich mud in the ultraoligotrophic South Pacific Gyre, neither the source materials nor the resource potentials for REY and Sc of the sediment have been quantified. We analyzed the major‐ and trace‐element contents of bulk sediments in Integrated Ocean Drilling Program Holes U1365A to U1370D, drilled in the South Pacific Gyre. The elemental relationships suggest that the enrichment in REY and Sc reflects the accumulation of biogenic Ca phosphate in an environment with low sedimentation rates as well as the tectonic transition of depositional environments from hydrothermally influenced sites near the mid‐ocean ridge to distal basins far from hydrothermal vents. The maximum total REY content of 4,662 ppm at Hole U1366C is the highest value yet reported from the South Pacific Ocean. Although the REY‐ and Sc‐enriched sediment layers of most cores from the South Pacific Gyre are located deeper beneath the seafloor than those elsewhere in the Pacific Ocean, Hole U1367B demonstrates large resource potentials (1.21 × 104t/km2of REY oxides and 102 t/km2of Sc) in the uppermost 6.5‐m interval, making it the most promising site for REY and Sc yet found in the South Pacific Gyre.
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影响因子:
0.8
作者:
Y. Takahashi;Y. Hayasaka;Koichi Morita;T. Kashiwabara;R. Nakada;M. Marcus;Kenji Kato;Kazuya Tanaka-Kazuy
通讯作者:
Y. Takahashi;Y. Hayasaka;Koichi Morita;T. Kashiwabara;R. Nakada;M. Marcus;Kenji Kato;Kazuya Tanaka-Kazuy
影响因子:
3.5
作者:
Kato, Y;Fujinaga, K;Suzuki, K
通讯作者:
Suzuki, K
DOI:
--
发表时间:
2016
期刊:
Proceedings of the Royal Society B: Biological Sciences
影响因子:
--
作者:
E. Sibert;R. Norris;J. Cuevas;L. Graves
通讯作者:
L. Graves
影响因子:
5.3
作者:
Nozaki, Y;Alibo, DS
通讯作者:
Alibo, DS
影响因子:
8
作者:
J. Ian
通讯作者:
J. Ian