Elemental and mineralogical characterization of marine sediments and their relationship to sedimentary and oceanographic processes in Central Bransfield Basin
Abstract This work consists of the sedimentological, mineralogical, and geochemical characterization of eight marine sediment cores collected in the Central Bransfield Basin, along a transect between the South Shetland Islands to the Antarctic Peninsula and its correlation to the sedimentary and oce...
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ftdoajarticles:oai:doaj.org/article:81cad699b0174409a485d89a1c993d1c 2024-01-21T10:01:43+01:00 Elemental and mineralogical characterization of marine sediments and their relationship to sedimentary and oceanographic processes in Central Bransfield Basin JANAYNA CYNTHIA M. GALVÃO ARTHUR AYRES NETO ROSEMARY VIEIRA JEFFERSON C. SIMÕES 2023-12-01T00:00:00Z https://doi.org/10.1590/0001-3765202320230990 https://doaj.org/article/81cad699b0174409a485d89a1c993d1c EN eng Academia Brasileira de Ciências http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652023000601119&lng=en&tlng=en http://www.scielo.br/pdf/aabc/v95s3/0001-3765-aabc-95-s3-e20230990.pdf https://doaj.org/toc/1678-2690 1678-2690 doi:10.1590/0001-3765202320230990 https://doaj.org/article/81cad699b0174409a485d89a1c993d1c Anais da Academia Brasileira de Ciências, Vol 95, Iss suppl 3 (2023) Antarctic geochemistry mineralogy Sediments oceanographic processes Science Q article 2023 ftdoajarticles https://doi.org/10.1590/0001-3765202320230990 2023-12-24T01:45:06Z Abstract This work consists of the sedimentological, mineralogical, and geochemical characterization of eight marine sediment cores collected in the Central Bransfield Basin, along a transect between the South Shetland Islands to the Antarctic Peninsula and its correlation to the sedimentary and oceanographic processes of the area. A chemical characterization based on X-ray fluorescence dispersive spectrometry was implemented to obtain geochemical data of the marine sediment while the minerals were identified by X-ray diffraction. The study allowed to classify the cores into three groups according to their sediment source and chemical and mineralogical characteristics. The joint assessment of the geochemical and mineralogical signature of the sediment has confirmed that the elemental ratios Ti/Ca and Fe/Ca can be applied as proxies in the reconstitution of the terrigenous contribution to the Central Bransfield Basin if we consider the sedimentary contribution of the volcanic edifices present in the region. The Fe/K ratio associated with the Chemical Index of Alteration reinforced an increase in the degree of weathering near South Shetland Island, which is also pointed out by other authors in studies on climate change mainly in the subantarctic islands. The trend of temperature increase implies the importance of monitoring the region. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula South Shetland Islands Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula South Shetland Islands The Antarctic Anais da Academia Brasileira de Ciências 95 suppl 3 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Antarctic geochemistry mineralogy Sediments oceanographic processes Science Q |
spellingShingle |
Antarctic geochemistry mineralogy Sediments oceanographic processes Science Q JANAYNA CYNTHIA M. GALVÃO ARTHUR AYRES NETO ROSEMARY VIEIRA JEFFERSON C. SIMÕES Elemental and mineralogical characterization of marine sediments and their relationship to sedimentary and oceanographic processes in Central Bransfield Basin |
topic_facet |
Antarctic geochemistry mineralogy Sediments oceanographic processes Science Q |
description |
Abstract This work consists of the sedimentological, mineralogical, and geochemical characterization of eight marine sediment cores collected in the Central Bransfield Basin, along a transect between the South Shetland Islands to the Antarctic Peninsula and its correlation to the sedimentary and oceanographic processes of the area. A chemical characterization based on X-ray fluorescence dispersive spectrometry was implemented to obtain geochemical data of the marine sediment while the minerals were identified by X-ray diffraction. The study allowed to classify the cores into three groups according to their sediment source and chemical and mineralogical characteristics. The joint assessment of the geochemical and mineralogical signature of the sediment has confirmed that the elemental ratios Ti/Ca and Fe/Ca can be applied as proxies in the reconstitution of the terrigenous contribution to the Central Bransfield Basin if we consider the sedimentary contribution of the volcanic edifices present in the region. The Fe/K ratio associated with the Chemical Index of Alteration reinforced an increase in the degree of weathering near South Shetland Island, which is also pointed out by other authors in studies on climate change mainly in the subantarctic islands. The trend of temperature increase implies the importance of monitoring the region. |
format |
Article in Journal/Newspaper |
author |
JANAYNA CYNTHIA M. GALVÃO ARTHUR AYRES NETO ROSEMARY VIEIRA JEFFERSON C. SIMÕES |
author_facet |
JANAYNA CYNTHIA M. GALVÃO ARTHUR AYRES NETO ROSEMARY VIEIRA JEFFERSON C. SIMÕES |
author_sort |
JANAYNA CYNTHIA M. GALVÃO |
title |
Elemental and mineralogical characterization of marine sediments and their relationship to sedimentary and oceanographic processes in Central Bransfield Basin |
title_short |
Elemental and mineralogical characterization of marine sediments and their relationship to sedimentary and oceanographic processes in Central Bransfield Basin |
title_full |
Elemental and mineralogical characterization of marine sediments and their relationship to sedimentary and oceanographic processes in Central Bransfield Basin |
title_fullStr |
Elemental and mineralogical characterization of marine sediments and their relationship to sedimentary and oceanographic processes in Central Bransfield Basin |
title_full_unstemmed |
Elemental and mineralogical characterization of marine sediments and their relationship to sedimentary and oceanographic processes in Central Bransfield Basin |
title_sort |
elemental and mineralogical characterization of marine sediments and their relationship to sedimentary and oceanographic processes in central bransfield basin |
publisher |
Academia Brasileira de Ciências |
publishDate |
2023 |
url |
https://doi.org/10.1590/0001-3765202320230990 https://doaj.org/article/81cad699b0174409a485d89a1c993d1c |
geographic |
Antarctic Antarctic Peninsula South Shetland Islands The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula South Shetland Islands The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula South Shetland Islands |
op_source |
Anais da Academia Brasileira de Ciências, Vol 95, Iss suppl 3 (2023) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652023000601119&lng=en&tlng=en http://www.scielo.br/pdf/aabc/v95s3/0001-3765-aabc-95-s3-e20230990.pdf https://doaj.org/toc/1678-2690 1678-2690 doi:10.1590/0001-3765202320230990 https://doaj.org/article/81cad699b0174409a485d89a1c993d1c |
op_doi |
https://doi.org/10.1590/0001-3765202320230990 |
container_title |
Anais da Academia Brasileira de Ciências |
container_volume |
95 |
container_issue |
suppl 3 |
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1788691779896213504 |