Paleoenvironments of a proglacial lake in Schirmacher Oasis, East Antarctica: Insights from quartz grain microtextures
Eighteen sediment samples from a 36 cm long sediment core retrieved from a proglacial lake (namely P 11) situated in the Schirmacher Oasis, East Antarctica, were analysed for the study of quartz grain morphology and microtexture, along with sand percentage, to reconstruct the paleoenvironmental chan...
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Polish Academy of Sciences
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ftdoajarticles:oai:doaj.org/article:bd35c135b28642a88cc8a5b16d7e78ac 2023-05-15T14:01:14+02:00 Paleoenvironments of a proglacial lake in Schirmacher Oasis, East Antarctica: Insights from quartz grain microtextures Mazumder Abhijit Govil Pawan Kar Ratan Gayathri Narath Meethal Raghuram 2017-03-01T00:00:00Z https://doi.org/10.1515/popore-2017-0002 https://doaj.org/article/bd35c135b28642a88cc8a5b16d7e78ac EN eng Polish Academy of Sciences http://www.degruyter.com/view/j/popore.2017.38.issue-1/popore-2017-0002/popore-2017-0002.xml?format=INT https://doaj.org/toc/2081-8262 2081-8262 doi:10.1515/popore-2017-0002 https://doaj.org/article/bd35c135b28642a88cc8a5b16d7e78ac Polish Polar Research, Vol 38, Iss 1, Pp 1-19 (2017) Antarctica Dronning Maud Land Proglacial lake Holocene Quartz grains microtexture sand percentage CONISS Cluster Analysis Geology QE1-996.5 article 2017 ftdoajarticles https://doi.org/10.1515/popore-2017-0002 2022-12-31T12:21:30Z Eighteen sediment samples from a 36 cm long sediment core retrieved from a proglacial lake (namely P 11) situated in the Schirmacher Oasis, East Antarctica, were analysed for the study of quartz grain morphology and microtexture, along with sand percentage, to reconstruct the paleoenvironmental changes in the lake during the Holocene. The age of the core ranges from 3.3 ka BP to 13.9 ka BP. The quartz grain morphology and microtexture reveal significant evidences of glacial transport along with some eolian and aqueous activities. On the basis of predominance of these signatures and the zonation from CONISS Cluster Analysis on the percentages of characteristic grain morphology and microtextures, the entire core has been subdivided into three major zones. From the paleoenvironmental perspective, it can be concluded that there is an onset of interglacial period at the advent of Holocene (12.3 ka BP), which reigned until 5.3 ka BP and thereafter, again a glacial environment prevailed until 3.3 ka BP with some variations in-between. The results indicate probable alternative colder and less colder phases in the study area, which are also well supported by the respective sand percentages in the sediments. Article in Journal/Newspaper Antarc* Antarctica Dronning Maud Land East Antarctica Polar Research Directory of Open Access Journals: DOAJ Articles East Antarctica Dronning Maud Land Polish Polar Research 38 1 1 19 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Antarctica Dronning Maud Land Proglacial lake Holocene Quartz grains microtexture sand percentage CONISS Cluster Analysis Geology QE1-996.5 |
spellingShingle |
Antarctica Dronning Maud Land Proglacial lake Holocene Quartz grains microtexture sand percentage CONISS Cluster Analysis Geology QE1-996.5 Mazumder Abhijit Govil Pawan Kar Ratan Gayathri Narath Meethal Raghuram Paleoenvironments of a proglacial lake in Schirmacher Oasis, East Antarctica: Insights from quartz grain microtextures |
topic_facet |
Antarctica Dronning Maud Land Proglacial lake Holocene Quartz grains microtexture sand percentage CONISS Cluster Analysis Geology QE1-996.5 |
description |
Eighteen sediment samples from a 36 cm long sediment core retrieved from a proglacial lake (namely P 11) situated in the Schirmacher Oasis, East Antarctica, were analysed for the study of quartz grain morphology and microtexture, along with sand percentage, to reconstruct the paleoenvironmental changes in the lake during the Holocene. The age of the core ranges from 3.3 ka BP to 13.9 ka BP. The quartz grain morphology and microtexture reveal significant evidences of glacial transport along with some eolian and aqueous activities. On the basis of predominance of these signatures and the zonation from CONISS Cluster Analysis on the percentages of characteristic grain morphology and microtextures, the entire core has been subdivided into three major zones. From the paleoenvironmental perspective, it can be concluded that there is an onset of interglacial period at the advent of Holocene (12.3 ka BP), which reigned until 5.3 ka BP and thereafter, again a glacial environment prevailed until 3.3 ka BP with some variations in-between. The results indicate probable alternative colder and less colder phases in the study area, which are also well supported by the respective sand percentages in the sediments. |
format |
Article in Journal/Newspaper |
author |
Mazumder Abhijit Govil Pawan Kar Ratan Gayathri Narath Meethal Raghuram |
author_facet |
Mazumder Abhijit Govil Pawan Kar Ratan Gayathri Narath Meethal Raghuram |
author_sort |
Mazumder Abhijit |
title |
Paleoenvironments of a proglacial lake in Schirmacher Oasis, East Antarctica: Insights from quartz grain microtextures |
title_short |
Paleoenvironments of a proglacial lake in Schirmacher Oasis, East Antarctica: Insights from quartz grain microtextures |
title_full |
Paleoenvironments of a proglacial lake in Schirmacher Oasis, East Antarctica: Insights from quartz grain microtextures |
title_fullStr |
Paleoenvironments of a proglacial lake in Schirmacher Oasis, East Antarctica: Insights from quartz grain microtextures |
title_full_unstemmed |
Paleoenvironments of a proglacial lake in Schirmacher Oasis, East Antarctica: Insights from quartz grain microtextures |
title_sort |
paleoenvironments of a proglacial lake in schirmacher oasis, east antarctica: insights from quartz grain microtextures |
publisher |
Polish Academy of Sciences |
publishDate |
2017 |
url |
https://doi.org/10.1515/popore-2017-0002 https://doaj.org/article/bd35c135b28642a88cc8a5b16d7e78ac |
geographic |
East Antarctica Dronning Maud Land |
geographic_facet |
East Antarctica Dronning Maud Land |
genre |
Antarc* Antarctica Dronning Maud Land East Antarctica Polar Research |
genre_facet |
Antarc* Antarctica Dronning Maud Land East Antarctica Polar Research |
op_source |
Polish Polar Research, Vol 38, Iss 1, Pp 1-19 (2017) |
op_relation |
http://www.degruyter.com/view/j/popore.2017.38.issue-1/popore-2017-0002/popore-2017-0002.xml?format=INT https://doaj.org/toc/2081-8262 2081-8262 doi:10.1515/popore-2017-0002 https://doaj.org/article/bd35c135b28642a88cc8a5b16d7e78ac |
op_doi |
https://doi.org/10.1515/popore-2017-0002 |
container_title |
Polish Polar Research |
container_volume |
38 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
19 |
_version_ |
1766270839536222208 |