The body of the Bellingshausen Ice Dome as a biogeochemical space
The investigation of glacial sediments has not received a lot of attention, but the processes in place on the surface of glaciers are quite interesting and multidirectional. In this article, we focused on glacial sediments material sampled from the surface of the Bellingshausen Ice Dome (King George...
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ftdoajarticles:oai:doaj.org/article:0a0ee6fc986f4f6a8c42ebe8bed7b264 2023-05-15T14:03:41+02:00 The body of the Bellingshausen Ice Dome as a biogeochemical space Timur Nizamutdinov Bulat Mavlyudov Wenjuan Wang Evgeny Abakumov 2022-09-01T00:00:00Z https://doi.org/10.1016/j.sesci.2022.05.002 https://doaj.org/article/0a0ee6fc986f4f6a8c42ebe8bed7b264 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2451912X22000186 https://doaj.org/toc/2451-912X 2451-912X doi:10.1016/j.sesci.2022.05.002 https://doaj.org/article/0a0ee6fc986f4f6a8c42ebe8bed7b264 Solid Earth Sciences, Vol 7, Iss 3, Pp 215-236 (2022) Antarctic Collins glacier King George Island Cryoconite Soil-like bodies Glacial sediments Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.1016/j.sesci.2022.05.002 2022-12-30T22:06:31Z The investigation of glacial sediments has not received a lot of attention, but the processes in place on the surface of glaciers are quite interesting and multidirectional. In this article, we focused on glacial sediments material sampled from the surface of the Bellingshausen Ice Dome (King George Island, South Shetland Islands, Antarctica). These sediments have different genesis: material from cryoconite holes, denuded layers of volcanic ash, flushed ash and soils and soil-like bodies formed in the glacial zone. Chemical analysis of the samples showed that the bulk composition of sediments is as follows: SiO2 > Fe2O3 > Al2O3 > SO3 > CaO > MgO > Na2O > TiO2 > K2O > P2O5 > MnO (with SiO2 content 50–55%, Fe2O3 – 17–23%, Al2O3 – 6–12%). The loss on ignition was maximum (10–11%) for samples taken at the top of the dome. Calculation of geochemical indexes showed that the mineral part of the samples is a product of erosion and sedimentation processes and is less chemically weathered in the lower part of the ice dome. The weathering type is fersiallitic. The maximum content of organogenic compounds (Total organic carbon – up to 5%, ammonium nitrogen – up to 116 mg/kg and mobile potassium – up to 373 mg/kg) also recorded at the top of the glacial dome; this may be associated with microbiological activity in cryoconite holes and the penetration of organic material from bird fauna. The low content of organogenic compounds on the slopes is caused by the processes of their washout with melt water. The content of trace metals Zn, Ni, and Pb found at higher elevations and distribution of Cu and Cd have more a local character associated with tourism activities and anthropogenic influence from year-round scientific stations. Thus, a number of multidirectional processes take place in the glacial sediments on the Bellingshausen Ice Dome, these are not simple denuded layers of ancient volcanic ash. The glacier cover can be considered as a “living” biogeochemical shell, accumulating products of ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Collins Glacier King George Island South Shetland Islands Directory of Open Access Journals: DOAJ Articles Antarctic Collins Glacier ENVELOPE(65.308,65.308,-73.829,-73.829) Dome The ENVELOPE(166.000,166.000,-85.367,-85.367) King George Island South Shetland Islands Solid Earth Sciences 7 3 215 236 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Antarctic Collins glacier King George Island Cryoconite Soil-like bodies Glacial sediments Geology QE1-996.5 |
spellingShingle |
Antarctic Collins glacier King George Island Cryoconite Soil-like bodies Glacial sediments Geology QE1-996.5 Timur Nizamutdinov Bulat Mavlyudov Wenjuan Wang Evgeny Abakumov The body of the Bellingshausen Ice Dome as a biogeochemical space |
topic_facet |
Antarctic Collins glacier King George Island Cryoconite Soil-like bodies Glacial sediments Geology QE1-996.5 |
description |
The investigation of glacial sediments has not received a lot of attention, but the processes in place on the surface of glaciers are quite interesting and multidirectional. In this article, we focused on glacial sediments material sampled from the surface of the Bellingshausen Ice Dome (King George Island, South Shetland Islands, Antarctica). These sediments have different genesis: material from cryoconite holes, denuded layers of volcanic ash, flushed ash and soils and soil-like bodies formed in the glacial zone. Chemical analysis of the samples showed that the bulk composition of sediments is as follows: SiO2 > Fe2O3 > Al2O3 > SO3 > CaO > MgO > Na2O > TiO2 > K2O > P2O5 > MnO (with SiO2 content 50–55%, Fe2O3 – 17–23%, Al2O3 – 6–12%). The loss on ignition was maximum (10–11%) for samples taken at the top of the dome. Calculation of geochemical indexes showed that the mineral part of the samples is a product of erosion and sedimentation processes and is less chemically weathered in the lower part of the ice dome. The weathering type is fersiallitic. The maximum content of organogenic compounds (Total organic carbon – up to 5%, ammonium nitrogen – up to 116 mg/kg and mobile potassium – up to 373 mg/kg) also recorded at the top of the glacial dome; this may be associated with microbiological activity in cryoconite holes and the penetration of organic material from bird fauna. The low content of organogenic compounds on the slopes is caused by the processes of their washout with melt water. The content of trace metals Zn, Ni, and Pb found at higher elevations and distribution of Cu and Cd have more a local character associated with tourism activities and anthropogenic influence from year-round scientific stations. Thus, a number of multidirectional processes take place in the glacial sediments on the Bellingshausen Ice Dome, these are not simple denuded layers of ancient volcanic ash. The glacier cover can be considered as a “living” biogeochemical shell, accumulating products of ... |
format |
Article in Journal/Newspaper |
author |
Timur Nizamutdinov Bulat Mavlyudov Wenjuan Wang Evgeny Abakumov |
author_facet |
Timur Nizamutdinov Bulat Mavlyudov Wenjuan Wang Evgeny Abakumov |
author_sort |
Timur Nizamutdinov |
title |
The body of the Bellingshausen Ice Dome as a biogeochemical space |
title_short |
The body of the Bellingshausen Ice Dome as a biogeochemical space |
title_full |
The body of the Bellingshausen Ice Dome as a biogeochemical space |
title_fullStr |
The body of the Bellingshausen Ice Dome as a biogeochemical space |
title_full_unstemmed |
The body of the Bellingshausen Ice Dome as a biogeochemical space |
title_sort |
body of the bellingshausen ice dome as a biogeochemical space |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://doi.org/10.1016/j.sesci.2022.05.002 https://doaj.org/article/0a0ee6fc986f4f6a8c42ebe8bed7b264 |
long_lat |
ENVELOPE(65.308,65.308,-73.829,-73.829) ENVELOPE(166.000,166.000,-85.367,-85.367) |
geographic |
Antarctic Collins Glacier Dome The King George Island South Shetland Islands |
geographic_facet |
Antarctic Collins Glacier Dome The King George Island South Shetland Islands |
genre |
Antarc* Antarctic Antarctica Collins Glacier King George Island South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctica Collins Glacier King George Island South Shetland Islands |
op_source |
Solid Earth Sciences, Vol 7, Iss 3, Pp 215-236 (2022) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2451912X22000186 https://doaj.org/toc/2451-912X 2451-912X doi:10.1016/j.sesci.2022.05.002 https://doaj.org/article/0a0ee6fc986f4f6a8c42ebe8bed7b264 |
op_doi |
https://doi.org/10.1016/j.sesci.2022.05.002 |
container_title |
Solid Earth Sciences |
container_volume |
7 |
container_issue |
3 |
container_start_page |
215 |
op_container_end_page |
236 |
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1766274502194364416 |