Arctic deep water ferromanganese-oxide deposits reflect the unique characteristics of the Arctic Ocean
Author Posting. © American Geophysical Union, 2017. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geochemistry, Geophysics, Geosystems 18 (2017): 3771–3800, doi:10.1002/2017GC007186. Little is...
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Language: | English |
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Online Access: | https://hdl.handle.net/1912/9463 |
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/9463 2023-05-15T14:41:21+02:00 Arctic deep water ferromanganese-oxide deposits reflect the unique characteristics of the Arctic Ocean Hein, James R. Konstantinova, Natalia Mikesell, Mariah Mizell, Kira Fitzsimmons, Jessica N. Lam, Phoebe J. Jensen, Laramie T. Xiang, Yang Gartman, Amy Cherkashov, Georgy Hutchinson, Deborah R. Till, Claire P. 2017-11-08 https://hdl.handle.net/1912/9463 en_US eng John Wiley & Sons https://doi.org/10.1002/2017GC007186 Geochemistry, Geophysics, Geosystems 18 (2017): 3771–3800 https://hdl.handle.net/1912/9463 doi:10.1002/2017GC007186 Geochemistry, Geophysics, Geosystems 18 (2017): 3771–3800 doi:10.1002/2017GC007186 Arctic Ocean Ferromanganese deposits Rare metals Scandium Paleoceanography Genetic model Article 2017 ftwhoas https://doi.org/10.1002/2017GC007186 2022-05-28T23:00:04Z Author Posting. © American Geophysical Union, 2017. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geochemistry, Geophysics, Geosystems 18 (2017): 3771–3800, doi:10.1002/2017GC007186. Little is known about marine mineral deposits in the Arctic Ocean, an ocean dominated by continental shelf and basins semi-closed to deep-water circulation. Here, we present data for ferromanganese crusts and nodules collected from the Amerasia Arctic Ocean in 2008, 2009, and 2012 (HLY0805, HLY0905, and HLY1202). We determined mineral and chemical compositions of the crusts and nodules and the onset of their formation. Water column samples from the GEOTRACES program were analyzed for dissolved and particulate scandium concentrations, an element uniquely enriched in these deposits. The Arctic crusts and nodules are characterized by unique mineral and chemical compositions with atypically high growth rates, detrital contents, Fe/Mn ratios, and low Si/Al ratios, compared to deposits found elsewhere. High detritus reflects erosion of submarine outcrops and North America and Siberia cratons, transport by rivers and glaciers to the sea, and distribution by sea ice, brines, and currents. Uniquely high Fe/Mn ratios are attributed to expansive continental shelves, where diagenetic cycling releases Fe to bottom waters, and density flows transport shelf bottom water to the open Arctic Ocean. Low Mn contents reflect the lack of a mid-water oxygen minimum zone that would act as a reservoir for dissolved Mn. The potential host phases and sources for elements with uniquely high contents are discussed with an emphasis on scandium. Scandium sorption onto Fe oxyhydroxides and Sc-rich detritus account for atypically high scandium contents. The opening of Fram Strait in the Miocene and ventilation of the deep basins initiated Fe-Mn crust growth ∼15 Myr ago. National Science Foundation Grant Numbers: 1434493, 1713677; NSF-OCE Grant Number: ... Article in Journal/Newspaper Arctic Arctic Ocean Fram Strait Sea ice Siberia Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Arctic Arctic Ocean Geochemistry, Geophysics, Geosystems 18 11 3771 3800 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Arctic Ocean Ferromanganese deposits Rare metals Scandium Paleoceanography Genetic model |
spellingShingle |
Arctic Ocean Ferromanganese deposits Rare metals Scandium Paleoceanography Genetic model Hein, James R. Konstantinova, Natalia Mikesell, Mariah Mizell, Kira Fitzsimmons, Jessica N. Lam, Phoebe J. Jensen, Laramie T. Xiang, Yang Gartman, Amy Cherkashov, Georgy Hutchinson, Deborah R. Till, Claire P. Arctic deep water ferromanganese-oxide deposits reflect the unique characteristics of the Arctic Ocean |
topic_facet |
Arctic Ocean Ferromanganese deposits Rare metals Scandium Paleoceanography Genetic model |
description |
Author Posting. © American Geophysical Union, 2017. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geochemistry, Geophysics, Geosystems 18 (2017): 3771–3800, doi:10.1002/2017GC007186. Little is known about marine mineral deposits in the Arctic Ocean, an ocean dominated by continental shelf and basins semi-closed to deep-water circulation. Here, we present data for ferromanganese crusts and nodules collected from the Amerasia Arctic Ocean in 2008, 2009, and 2012 (HLY0805, HLY0905, and HLY1202). We determined mineral and chemical compositions of the crusts and nodules and the onset of their formation. Water column samples from the GEOTRACES program were analyzed for dissolved and particulate scandium concentrations, an element uniquely enriched in these deposits. The Arctic crusts and nodules are characterized by unique mineral and chemical compositions with atypically high growth rates, detrital contents, Fe/Mn ratios, and low Si/Al ratios, compared to deposits found elsewhere. High detritus reflects erosion of submarine outcrops and North America and Siberia cratons, transport by rivers and glaciers to the sea, and distribution by sea ice, brines, and currents. Uniquely high Fe/Mn ratios are attributed to expansive continental shelves, where diagenetic cycling releases Fe to bottom waters, and density flows transport shelf bottom water to the open Arctic Ocean. Low Mn contents reflect the lack of a mid-water oxygen minimum zone that would act as a reservoir for dissolved Mn. The potential host phases and sources for elements with uniquely high contents are discussed with an emphasis on scandium. Scandium sorption onto Fe oxyhydroxides and Sc-rich detritus account for atypically high scandium contents. The opening of Fram Strait in the Miocene and ventilation of the deep basins initiated Fe-Mn crust growth ∼15 Myr ago. National Science Foundation Grant Numbers: 1434493, 1713677; NSF-OCE Grant Number: ... |
format |
Article in Journal/Newspaper |
author |
Hein, James R. Konstantinova, Natalia Mikesell, Mariah Mizell, Kira Fitzsimmons, Jessica N. Lam, Phoebe J. Jensen, Laramie T. Xiang, Yang Gartman, Amy Cherkashov, Georgy Hutchinson, Deborah R. Till, Claire P. |
author_facet |
Hein, James R. Konstantinova, Natalia Mikesell, Mariah Mizell, Kira Fitzsimmons, Jessica N. Lam, Phoebe J. Jensen, Laramie T. Xiang, Yang Gartman, Amy Cherkashov, Georgy Hutchinson, Deborah R. Till, Claire P. |
author_sort |
Hein, James R. |
title |
Arctic deep water ferromanganese-oxide deposits reflect the unique characteristics of the Arctic Ocean |
title_short |
Arctic deep water ferromanganese-oxide deposits reflect the unique characteristics of the Arctic Ocean |
title_full |
Arctic deep water ferromanganese-oxide deposits reflect the unique characteristics of the Arctic Ocean |
title_fullStr |
Arctic deep water ferromanganese-oxide deposits reflect the unique characteristics of the Arctic Ocean |
title_full_unstemmed |
Arctic deep water ferromanganese-oxide deposits reflect the unique characteristics of the Arctic Ocean |
title_sort |
arctic deep water ferromanganese-oxide deposits reflect the unique characteristics of the arctic ocean |
publisher |
John Wiley & Sons |
publishDate |
2017 |
url |
https://hdl.handle.net/1912/9463 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Fram Strait Sea ice Siberia |
genre_facet |
Arctic Arctic Ocean Fram Strait Sea ice Siberia |
op_source |
Geochemistry, Geophysics, Geosystems 18 (2017): 3771–3800 doi:10.1002/2017GC007186 |
op_relation |
https://doi.org/10.1002/2017GC007186 Geochemistry, Geophysics, Geosystems 18 (2017): 3771–3800 https://hdl.handle.net/1912/9463 doi:10.1002/2017GC007186 |
op_doi |
https://doi.org/10.1002/2017GC007186 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
18 |
container_issue |
11 |
container_start_page |
3771 |
op_container_end_page |
3800 |
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1766313137804410880 |