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Settling particles with positive Ce anomalies from the Japan Sea
Author(s) -
Masuzawa Toshiyuki,
Koyama Mutsuo
Publication year - 1989
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl016i006p00503
Subject(s) - settling , seawater , sediment , geology , rare earth element , mineralogy , oceanography , sedimentation , rare earth , environmental science , geomorphology , environmental engineering
Rare earth element patterns of settling particles collected at five water depths (890 to 3,240 m) of the Japan Sea show significant positive Ce anomalies. The very surface sediment exhibits a slightly positive one. Excess Ce content over the Ce/La ratio of average shale increases with increasing excess Mn content from 890 to 1,870 m, and it possibly remains constant below this depth. These results give evidence for the removal of Ce in association with the removal of Mn from seawater by settling particles.