Mineral magnetic properties of surface soils from the Broknes and Grovnes Peninsula, Larsemann Hills, East Antarctica
This study presents the mineral magnetic, particle size, and organic content data of surface soils from Larsemann Hills, East Antarctica. The analysis of isothermal remanent magnetization and the high specific magnetic susceptibility values –mean (±S.D.) values of 117.7 (±175.0) × 10−8m3kg−1 for Bro...
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ftnipr:oai:nipr.repo.nii.ac.jp:02000366 2024-09-30T14:25:18+00:00 Mineral magnetic properties of surface soils from the Broknes and Grovnes Peninsula, Larsemann Hills, East Antarctica Joju G.S. Warrier Anish Kumar Chaparro Marcos A.E. Mahesh B.S. Matthew Freddy Abraham Anusree S. Mohan Rahul 2023 https://nipr.repo.nii.ac.jp/records/2000366 eng eng 10.1016/j.polar.2023.100968 https://doi.org/10.1016/j.polar.2023.100968 Polar Science 38 100968 18739652 https://nipr.repo.nii.ac.jp/records/2000366 Soils Weathering Environmental magnetism Pedogenesis Particle size NA 2023 ftnipr https://doi.org/10.1016/j.polar.2023.100968 2024-09-10T14:13:45Z This study presents the mineral magnetic, particle size, and organic content data of surface soils from Larsemann Hills, East Antarctica. The analysis of isothermal remanent magnetization and the high specific magnetic susceptibility values –mean (±S.D.) values of 117.7 (±175.0) × 10−8m3kg−1 for Broknes Peninsula and of 330.9 (±217.4) × 10−8m3kg−1 for Grovnes Peninsula– indicate high concentrations of low-coercivity magnetic minerals. The magnetic minerals are coarse-grained in the multidomain and pseudo-single domain range, and the significant correlation between some magnetic parameters suggests the dominant control of multidomain grains. The remanent acquisition coercivity H1/2 shows mean (±S.D.) values of 38.2 (±4.9) for Broknes and 38.3 (±3.7) mT for Grovnes soils suggesting magnetite dominance. The soils lie in the sand and loamy sand textural classes, and the concentration of organic matter is very low. Values of percentage frequency-dependent susceptibility indicate insignificant proportions of superparamagnetic grains, and therefore no significant evidence for pedogenic magnetic minerals was observed in these soils. The magnetic signal of Larsemann Hills soils was primarily terrigenous with no contributions from bacterial magnetite, authigenic greigite and anthropogenic magnetic minerals. journal article Other/Unknown Material Antarc* Antarctica East Antarctica Polar Science Polar Science National Institute of Polar Research Repository, Japan Broknes ENVELOPE(76.346,76.346,-69.391,-69.391) East Antarctica Larsemann Hills ENVELOPE(76.217,76.217,-69.400,-69.400) Polar Science 38 100968 |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
Soils Weathering Environmental magnetism Pedogenesis Particle size |
spellingShingle |
Soils Weathering Environmental magnetism Pedogenesis Particle size Joju G.S. Warrier Anish Kumar Chaparro Marcos A.E. Mahesh B.S. Matthew Freddy Abraham Anusree S. Mohan Rahul Mineral magnetic properties of surface soils from the Broknes and Grovnes Peninsula, Larsemann Hills, East Antarctica |
topic_facet |
Soils Weathering Environmental magnetism Pedogenesis Particle size |
description |
This study presents the mineral magnetic, particle size, and organic content data of surface soils from Larsemann Hills, East Antarctica. The analysis of isothermal remanent magnetization and the high specific magnetic susceptibility values –mean (±S.D.) values of 117.7 (±175.0) × 10−8m3kg−1 for Broknes Peninsula and of 330.9 (±217.4) × 10−8m3kg−1 for Grovnes Peninsula– indicate high concentrations of low-coercivity magnetic minerals. The magnetic minerals are coarse-grained in the multidomain and pseudo-single domain range, and the significant correlation between some magnetic parameters suggests the dominant control of multidomain grains. The remanent acquisition coercivity H1/2 shows mean (±S.D.) values of 38.2 (±4.9) for Broknes and 38.3 (±3.7) mT for Grovnes soils suggesting magnetite dominance. The soils lie in the sand and loamy sand textural classes, and the concentration of organic matter is very low. Values of percentage frequency-dependent susceptibility indicate insignificant proportions of superparamagnetic grains, and therefore no significant evidence for pedogenic magnetic minerals was observed in these soils. The magnetic signal of Larsemann Hills soils was primarily terrigenous with no contributions from bacterial magnetite, authigenic greigite and anthropogenic magnetic minerals. journal article |
format |
Other/Unknown Material |
author |
Joju G.S. Warrier Anish Kumar Chaparro Marcos A.E. Mahesh B.S. Matthew Freddy Abraham Anusree S. Mohan Rahul |
author_facet |
Joju G.S. Warrier Anish Kumar Chaparro Marcos A.E. Mahesh B.S. Matthew Freddy Abraham Anusree S. Mohan Rahul |
author_sort |
Joju G.S. |
title |
Mineral magnetic properties of surface soils from the Broknes and Grovnes Peninsula, Larsemann Hills, East Antarctica |
title_short |
Mineral magnetic properties of surface soils from the Broknes and Grovnes Peninsula, Larsemann Hills, East Antarctica |
title_full |
Mineral magnetic properties of surface soils from the Broknes and Grovnes Peninsula, Larsemann Hills, East Antarctica |
title_fullStr |
Mineral magnetic properties of surface soils from the Broknes and Grovnes Peninsula, Larsemann Hills, East Antarctica |
title_full_unstemmed |
Mineral magnetic properties of surface soils from the Broknes and Grovnes Peninsula, Larsemann Hills, East Antarctica |
title_sort |
mineral magnetic properties of surface soils from the broknes and grovnes peninsula, larsemann hills, east antarctica |
publishDate |
2023 |
url |
https://nipr.repo.nii.ac.jp/records/2000366 |
long_lat |
ENVELOPE(76.346,76.346,-69.391,-69.391) ENVELOPE(76.217,76.217,-69.400,-69.400) |
geographic |
Broknes East Antarctica Larsemann Hills |
geographic_facet |
Broknes East Antarctica Larsemann Hills |
genre |
Antarc* Antarctica East Antarctica Polar Science Polar Science |
genre_facet |
Antarc* Antarctica East Antarctica Polar Science Polar Science |
op_relation |
10.1016/j.polar.2023.100968 https://doi.org/10.1016/j.polar.2023.100968 Polar Science 38 100968 18739652 https://nipr.repo.nii.ac.jp/records/2000366 |
op_doi |
https://doi.org/10.1016/j.polar.2023.100968 |
container_title |
Polar Science |
container_volume |
38 |
container_start_page |
100968 |
_version_ |
1811644338996772864 |