@article{oai:kanazawa-u.repo.nii.ac.jp:00060775,
 author = {臼井, 洋一 and Fujinaga, Koichiro and Yasukawa, Kazutaka and Nakamura, Kentaro and Machida, Shiki and Takaya, Yutaro and Ohta, Junichiro and Araki, Shuhei and Liu, Hanjie and Usami, Ryo and Maki, Ryota and Haraguchi, Satoru and Nishio, Yoshiro and Usui, Yoichi and Nozaki, Tatsuo and Yamazaki, Toshitsugu and Ichiyama, Yuji and Ijiri, Akira and Inagaki, Fumio and Machiyama, Hideaki and Iijima, Koichi and Suzuki, Katsuhiko and Kato, Yasuhiro and KR13-02, MR13-E02 Leg 2 and KR14-02 Cruise Members},
 issue = {6},
 journal = {Geochemical Journal},
 month = {Nov},
 note = {We report detailed lithological and chemical characteristics of deep-sea sediments, including rare-earth elements and yttrium-rich mud (REY-rich mud), in the Japanese Exclusive Economic Zone (EEZ) around Minamitorishima Island. Three research cruises obtained fourteen sediment cores collected by piston coring. Based on the visual descriptions and geochemical analysis of the sediment cores, we confirm the presence of REY-rich mud containing more than 400 ppm total REY (ΣREY) in the southern and northwestern areas of the Minamitorishima EEZ. The REY-rich mud layers are characterized by abundant grains of phillipsite, biogenic calcium phosphate, and manganese oxides, and are widely distributed in relatively shallow depths beneath the seafloor. In contrast, relatively thick, non-REY-rich mud lies near the seafloor in the northern areas of the EEZ. In the three cores from the southern part of the EEZ, we also confirm the presence of highly/extremely REY-rich mud layers. Further accumulation of geochemical data from the sediments will be required to constrain the extent of the highly/extremely REY-rich mud layers. © 2016 by The Geochemical Society of Japan., 金沢大学理工研究域地球社会基盤学系},
 pages = {575--590},
 title = {Geochemistry of REY-rich mud in the Japanese Exclusive Economic Zone around Minamitorishima Island},
 volume = {50},
 year = {2016}
}