Genesis and Nd Isotope Composition of Ferromanganese Deposits of the Sea of Okhotsk and the Kuril Island Arc

被引：5

作者：

Mikhailik, P. E. ^{[1
]}

Vishnevskaya, I. A. ^{[2
,3
,4
]}

Mikhailik, E., V ^{[1
]}

Blokhin, M. G. ^{[1
]}

Chervyakovskaya, M., V ^{[4
]}

Rashidov, V. A. ^{[5
]}

Ren, X. ^{[6
]}

机构：

[1] Russian Acad Sci, Far Eastern Geol Inst, Far Eastern Branch, Pr 100 Letiya Vladivostoka 159, Vladivostok 690022, Russia

[2] Russian Acad Sci, Vernadsky Inst Geochem & Analyt Chem, Ul Kosygina 19, Moscow 119991, Russia

[3] Novosibirsk State Univ, Ul Pirogova 1, Novosibirsk 630090, Russia

[4] Russian Acad Sci, Ural Branch, Zavaritsky Inst Geol & Geochem, Ul Akad Vonsovskogo 15, Ekaterinburg 620016, Russia

[5] Russian Acad Sci, Inst Volcanol & Seismol, Far Eastern Branch, Bulv Piipa 9, Petropavlovsk Kamchatski 683006, Russia

[6] State Ocean Adm, Inst Oceanog 1, 6 Xianxialing Rd, Qingdao 266061, Peoples R China

来源：

RUSSIAN GEOLOGY AND GEOPHYSICS | 2021年 / 62卷 / 09期

基金：

俄罗斯基础研究基金会; 俄罗斯科学基金会;

关键词：

ferromanganese deposits; Nd isotope composition; genesis; Kuril island arc; Sea of Okhotsk; RARE-EARTH-ELEMENTS; DERYUGIN BASIN; METALLIFEROUS SEDIMENTS; CHEMICAL-COMPOSITION; HYDROTHERMAL FIELD; MANGANESE NODULES; BOTTOM SEDIMENTS; DEEP-WATER; CRUSTS; GEOCHEMISTRY;

D O I：

10.2113/RGG20194142

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

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 Dayugin Basin have a heterogeneous Nd isotope composition. The positive epsilon(Nd) 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 epsilon(Nd) value specific to seawater (-3.2). The epsilon(Nd )value of hydrogenetic FMD from Volcano 7.14 is -3.4, which corresponds to the epsilon(Nd )value of the Pacific water. The FMD samples from Volcano 5.5 are characterized by epsilon(Nd) = -2.0. The higher epsilon(Nd )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 epsilon(Nd )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.

引用

页码：1074 / 1087

页数：14

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