Late Quaternary paleoenvironmental changes revealed by multi-proxy records from the Chukchi Abyssal Plain, western Arctic Ocean
Late Quaternary paleoenvironmental changes in the western Arctic Ocean are revealed by multi-proxy records of core 03M03 from the Chukchi Abyssal Plain (CAP). Proxy parameters include lithology, grain size fractions, and mineralogy and petrology of ice-rafted detritus (IRD), element contents, biogen...
Published in: | Global and Planetary Change |
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Language: | English |
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2013
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Online Access: | http://hdl.handle.net/2440/79976 https://doi.org/10.1016/j.gloplacha.2013.05.017 |
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ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/79976 2023-12-17T10:23:41+01:00 Late Quaternary paleoenvironmental changes revealed by multi-proxy records from the Chukchi Abyssal Plain, western Arctic Ocean Wang, R. Xiao, W. Marz, C. Li, Q. 2013 http://hdl.handle.net/2440/79976 https://doi.org/10.1016/j.gloplacha.2013.05.017 en eng Elsevier Science BV Global and Planetary Change, 2013; 108:100-118 0921-8181 1872-6364 http://hdl.handle.net/2440/79976 doi:10.1016/j.gloplacha.2013.05.017 Copyright © 2013 Elsevier B.V. All rights reserved. http://dx.doi.org/10.1016/j.gloplacha.2013.05.017 IRD provenance terrigenous input surface productivity Nps-δ18O and -δ13C Nps-Mg/Ca late Quaternary Western Arctic Ocean Journal article 2013 ftunivadelaidedl https://doi.org/10.1016/j.gloplacha.2013.05.017 2023-11-20T23:24:14Z Late Quaternary paleoenvironmental changes in the western Arctic Ocean are revealed by multi-proxy records of core 03M03 from the Chukchi Abyssal Plain (CAP). Proxy parameters include lithology, grain size fractions, and mineralogy and petrology of ice-rafted detritus (IRD), element contents, biogenic components, δ18O, δ13C and Mg/Ca of planktonic foraminifera Neogloboquadrina pachyderma (sin.) (Nps). Seven IRD (>250μm) peaks are interpreted as marking detrital input by rafting sea ice or icebergs during MIS 3 interstadials and early MIS 1. High MnO, CaO and MgO contents and high Ca/Al and Mg/Al ratios during MIS 3 and MIS 1 correspond to increases in ice-rafted detrital carbonates and the synchronous declines in siliciclastic elements (e.g., Al2O3, Fe2O3). Therefore, these warmer periods were characterized by a high detrital carbonate input entrained in icebergs from the Canadian Arctic Archipelago coeval with an increased input of Mn through rivers and/or coastal erosion. Relatively stable contents of siliciclastic elements and their ratios in the grayish sediment units are interpreted from turbid surface water plumes or nepheloid flows delivered by meltwater and/or brine rejection from ice-sheet margins at the Arctic Ocean periphery. Relatively stable clay- and silt-sized fractions were attributed mainly to sea ice entrainment over glacial-interglacial cycles. High foraminiferal abundances in the brown units during MIS 3 and 1 are related to enhanced calcareous plankton productivity under more open water conditions and/or the incremental input of Atlantic water masses. Relatively high TOC and opal contents in the grayish units of MIS 3 appear to have accumulated by lateral transport of organic matter from the Chukchi shelf to the deep abyssal plain. Lower contents of biogenic material in the brown units probably result from increased dilution by rapid IRD deposition, and from early diagenetic degradation. Depletions in Nps-δ18O and -δ13C concurrent with high foraminiferal abundances and IRD peaks within ... Article in Journal/Newspaper Arctic Archipelago Arctic Arctic Ocean Canadian Arctic Archipelago Chukchi Foraminifera* Ice Sheet Iceberg* Neogloboquadrina pachyderma Planktonic foraminifera Sea ice The University of Adelaide: Digital Library Arctic Arctic Ocean Canadian Arctic Archipelago Chukchi Shelf ENVELOPE(-169.167,-169.167,70.550,70.550) Chukchi Abyssal Plain ENVELOPE(-171.192,-171.192,76.285,76.285) Global and Planetary Change 108 100 118 |
institution |
Open Polar |
collection |
The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
topic |
IRD provenance terrigenous input surface productivity Nps-δ18O and -δ13C Nps-Mg/Ca late Quaternary Western Arctic Ocean |
spellingShingle |
IRD provenance terrigenous input surface productivity Nps-δ18O and -δ13C Nps-Mg/Ca late Quaternary Western Arctic Ocean Wang, R. Xiao, W. Marz, C. Li, Q. Late Quaternary paleoenvironmental changes revealed by multi-proxy records from the Chukchi Abyssal Plain, western Arctic Ocean |
topic_facet |
IRD provenance terrigenous input surface productivity Nps-δ18O and -δ13C Nps-Mg/Ca late Quaternary Western Arctic Ocean |
description |
Late Quaternary paleoenvironmental changes in the western Arctic Ocean are revealed by multi-proxy records of core 03M03 from the Chukchi Abyssal Plain (CAP). Proxy parameters include lithology, grain size fractions, and mineralogy and petrology of ice-rafted detritus (IRD), element contents, biogenic components, δ18O, δ13C and Mg/Ca of planktonic foraminifera Neogloboquadrina pachyderma (sin.) (Nps). Seven IRD (>250μm) peaks are interpreted as marking detrital input by rafting sea ice or icebergs during MIS 3 interstadials and early MIS 1. High MnO, CaO and MgO contents and high Ca/Al and Mg/Al ratios during MIS 3 and MIS 1 correspond to increases in ice-rafted detrital carbonates and the synchronous declines in siliciclastic elements (e.g., Al2O3, Fe2O3). Therefore, these warmer periods were characterized by a high detrital carbonate input entrained in icebergs from the Canadian Arctic Archipelago coeval with an increased input of Mn through rivers and/or coastal erosion. Relatively stable contents of siliciclastic elements and their ratios in the grayish sediment units are interpreted from turbid surface water plumes or nepheloid flows delivered by meltwater and/or brine rejection from ice-sheet margins at the Arctic Ocean periphery. Relatively stable clay- and silt-sized fractions were attributed mainly to sea ice entrainment over glacial-interglacial cycles. High foraminiferal abundances in the brown units during MIS 3 and 1 are related to enhanced calcareous plankton productivity under more open water conditions and/or the incremental input of Atlantic water masses. Relatively high TOC and opal contents in the grayish units of MIS 3 appear to have accumulated by lateral transport of organic matter from the Chukchi shelf to the deep abyssal plain. Lower contents of biogenic material in the brown units probably result from increased dilution by rapid IRD deposition, and from early diagenetic degradation. Depletions in Nps-δ18O and -δ13C concurrent with high foraminiferal abundances and IRD peaks within ... |
format |
Article in Journal/Newspaper |
author |
Wang, R. Xiao, W. Marz, C. Li, Q. |
author_facet |
Wang, R. Xiao, W. Marz, C. Li, Q. |
author_sort |
Wang, R. |
title |
Late Quaternary paleoenvironmental changes revealed by multi-proxy records from the Chukchi Abyssal Plain, western Arctic Ocean |
title_short |
Late Quaternary paleoenvironmental changes revealed by multi-proxy records from the Chukchi Abyssal Plain, western Arctic Ocean |
title_full |
Late Quaternary paleoenvironmental changes revealed by multi-proxy records from the Chukchi Abyssal Plain, western Arctic Ocean |
title_fullStr |
Late Quaternary paleoenvironmental changes revealed by multi-proxy records from the Chukchi Abyssal Plain, western Arctic Ocean |
title_full_unstemmed |
Late Quaternary paleoenvironmental changes revealed by multi-proxy records from the Chukchi Abyssal Plain, western Arctic Ocean |
title_sort |
late quaternary paleoenvironmental changes revealed by multi-proxy records from the chukchi abyssal plain, western arctic ocean |
publisher |
Elsevier Science BV |
publishDate |
2013 |
url |
http://hdl.handle.net/2440/79976 https://doi.org/10.1016/j.gloplacha.2013.05.017 |
long_lat |
ENVELOPE(-169.167,-169.167,70.550,70.550) ENVELOPE(-171.192,-171.192,76.285,76.285) |
geographic |
Arctic Arctic Ocean Canadian Arctic Archipelago Chukchi Shelf Chukchi Abyssal Plain |
geographic_facet |
Arctic Arctic Ocean Canadian Arctic Archipelago Chukchi Shelf Chukchi Abyssal Plain |
genre |
Arctic Archipelago Arctic Arctic Ocean Canadian Arctic Archipelago Chukchi Foraminifera* Ice Sheet Iceberg* Neogloboquadrina pachyderma Planktonic foraminifera Sea ice |
genre_facet |
Arctic Archipelago Arctic Arctic Ocean Canadian Arctic Archipelago Chukchi Foraminifera* Ice Sheet Iceberg* Neogloboquadrina pachyderma Planktonic foraminifera Sea ice |
op_source |
http://dx.doi.org/10.1016/j.gloplacha.2013.05.017 |
op_relation |
Global and Planetary Change, 2013; 108:100-118 0921-8181 1872-6364 http://hdl.handle.net/2440/79976 doi:10.1016/j.gloplacha.2013.05.017 |
op_rights |
Copyright © 2013 Elsevier B.V. All rights reserved. |
op_doi |
https://doi.org/10.1016/j.gloplacha.2013.05.017 |
container_title |
Global and Planetary Change |
container_volume |
108 |
container_start_page |
100 |
op_container_end_page |
118 |
_version_ |
1785559568874471424 |