Research output: Contribution to journal › Article › peer-review
Genesis and Nd Isotope Composition of Ferromanganese Deposits of the Sea of Okhotsk and the Kuril Island Arc. / Mikhailik, P. E.; Vishnevskaya, I. A.; Mikhailik, E. V. et al.
In: Russian Geology and Geophysics, Vol. 62, No. 9, 8, 09.2021, p. 1074-1087.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Genesis and Nd Isotope Composition of Ferromanganese Deposits of the Sea of Okhotsk and the Kuril Island Arc
AU - Mikhailik, P. E.
AU - Vishnevskaya, I. A.
AU - Mikhailik, E. V.
AU - Blokhin, M. G.
AU - Chervyakovskaya, M. V.
AU - Rashidov, V. A.
AU - Ren, X.
N1 - Funding Information: The scientific expeditions of the above cruises were financially supported by the Presidium of the FEB RAS. The research was supported by grant 18-17-00015 (determination of the bulk contents of elements) from the Russian Science Foundation and by projects 18-05-00436A (determination of Nd isotope composition) and 18-05-00410A (preparation of samples for analysis) from the Russian Foundation for Basic Research. Publisher Copyright: © 2021, Novosibirsk State University.
PY - 2021/9
Y1 - 2021/9
N2 - The Nd isotope composition of ferromanganese deposits (FMD) from the central part of the Sea of Okhotsk and the Kuril island arc has been studied. The results showed that diagenetic samples from the Deryugin Basin have a heterogeneous Nd isotope compo-sition. The positive εNd values here might be both due to the input of a terrigenous impurity and due to diffuse endogenetic element supply. The FMD samples from the Sonne underwater ridge show a εNd value specific to seawater (–3.2). The εNd value of hydrogenetic FMD from Volcano 7.14 is –3.4, which corresponds to the εNd value of the Pacific water. The FMD samples from Volcano 5.5 are characterized by εNd = –2.0. The higher εNd value might be due to a moderate dilution of the hydrothermal fluid by seawater and might also indicate the presence of volcanic fragments in the FMD samples. The highest εNd value (+4.4) has been established for volcaniclastic sandstone saturated with Fe and Mn hydroxides. It points to a mixing of volcanomictic and hydrothermal materials.
AB - The Nd isotope composition of ferromanganese deposits (FMD) from the central part of the Sea of Okhotsk and the Kuril island arc has been studied. The results showed that diagenetic samples from the Deryugin Basin have a heterogeneous Nd isotope compo-sition. The positive εNd values here might be both due to the input of a terrigenous impurity and due to diffuse endogenetic element supply. The FMD samples from the Sonne underwater ridge show a εNd value specific to seawater (–3.2). The εNd value of hydrogenetic FMD from Volcano 7.14 is –3.4, which corresponds to the εNd value of the Pacific water. The FMD samples from Volcano 5.5 are characterized by εNd = –2.0. The higher εNd value might be due to a moderate dilution of the hydrothermal fluid by seawater and might also indicate the presence of volcanic fragments in the FMD samples. The highest εNd value (+4.4) has been established for volcaniclastic sandstone saturated with Fe and Mn hydroxides. It points to a mixing of volcanomictic and hydrothermal materials.
KW - Ferromanganese deposits
KW - Genesis
KW - Kuril island arc
KW - Nd isotope composition
KW - Sea of Okhotsk
UR - http://www.scopus.com/inward/record.url?scp=85115743573&partnerID=8YFLogxK
U2 - 10.2113/RGG20194142
DO - 10.2113/RGG20194142
M3 - Article
AN - SCOPUS:85115743573
VL - 62
SP - 1074
EP - 1087
JO - Russian Geology and Geophysics
JF - Russian Geology and Geophysics
SN - 1068-7971
IS - 9
M1 - 8
ER -
ID: 34343254