Abnormally high mercury contents in hydrogenic ferromanganese crusts from Seth Guyot (Northwestern Pacific)

被引：7
|
作者：
Mikhailik, P. E. [1 ,2 ]
Khanchuk, A. I. [1 ]
Mikhailik, E. V. [1 ]
Ivanov, M. V. [3 ]
Rashidov, V. A. [4 ]
Zarubina, N. V. [1 ]
Blokhin, M. G. [1 ]
Barinov, N. N. [1 ]
Pletnev, S. P. [3 ]
机构：
[1] Russian Acad Sci, Far East Branch, Far East Geol Inst, Pr Stoletiya Vladivostoka 159, Vladivostok 690022, Russia
[2] Far East Fed Univ, Ul Sukhanova 8, Vladivostok 690950, Russia
[3] VI Ilyichev Pacific Oceanog Inst, Ul Baltiiskaya 43, Vladivostok 690041, Russia
[4] Russian Acad Sci, Far East Branch, Inst Volcanol, Bulv Piipa 9, Petropavlovsk Kamchatski 683006, Russia
来源：
RUSSIAN GEOLOGY AND GEOPHYSICS | 2018年 / 59卷 / 03期
关键词：
mercury; ferromanganese crusts; seamount; Northwestern Pacific; ELEMENTAL MERCURY; MN CRUST; SEA; SEAMOUNTS; SEAWATER; OCEAN; RICH; MANGANESE; ISOTOPES; EPISODES;
D O I：
10.1016/j.rgg.2018.03.001
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Variations in mercury contents in marine sediments have implications for hydrothermal activity, paleoclimate, depositional environments, and primary bioproduction. Mercury contents reach 148 ppb in hydrogenic ferromanganese crusts on flat-topped seamounts. Such crusts, with up to 4120 ppb Hg, were dredged from the slopes of Seth Guyot in the western Marcus-Wake Seamounts in 1982, during the 13th cruise of RV Vulkanolog. The Seth Fe-Mn crusts are of the same origin as hydrogenic Co-rich ferromanganese deposits from seamounts in other oceanic regions. Mercury accumulated in the Cenozoic as Fe-Mn oxyhydroxides in the crusts adsorbed Hg from bottom water. The process was especially rapid during the Pliocene volcano-tectonic rejuvenated stage. (C) 2018, V.S. Sobolev IGM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：217 / 225
页数：9
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