Depositional environment and climate changes during the Holocene in Grande Valley, Fildes Peninsula, King George Island, Antarctica
Abstract A 9.24 m sediment core, GA-2, was collected on the coastal platform of Grande Valley, a relatively narrow and shallow fjord in Fildes Peninsula, King George Island, Antarctica. The sediment was formed between 6600 and 2000 cal. yr bp according to accelerator mass spectrometry (AMS) 14 C dat...
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Online Access: | http://dx.doi.org/10.1017/s095410201700030x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410201700030X |
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crcambridgeupr:10.1017/s095410201700030x 2024-03-03T08:38:53+00:00 Depositional environment and climate changes during the Holocene in Grande Valley, Fildes Peninsula, King George Island, Antarctica Chu, Zhuding Sun, Liguang Wang, Yuhong Huang, Tao Zhou, Xin 2017 http://dx.doi.org/10.1017/s095410201700030x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410201700030X en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 29, issue 6, page 545-554 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2017 crcambridgeupr https://doi.org/10.1017/s095410201700030x 2024-02-08T08:47:38Z Abstract A 9.24 m sediment core, GA-2, was collected on the coastal platform of Grande Valley, a relatively narrow and shallow fjord in Fildes Peninsula, King George Island, Antarctica. The sediment was formed between 6600 and 2000 cal. yr bp according to accelerator mass spectrometry (AMS) 14 C dating of five bulk sediment samples. The comprehensive proxy indicators (grain size, loss on ignition at 550°C, magnetic susceptibility, elements) were analysed, and three separate depositional environments and an alternating climate change pattern were identified. Grande Valley experienced a warm marine environment between 6600 and 5800 cal. yr bp , a minor cooling between 5800 and 4800 cal. yr bp , the transition from cool to warm during 4800–4400 cal. yr bp , a mid-Holocene climatic optimum between 4400 and 2700 cal. yr bp , and the onset of the Neoglacial at 2700 cal. yr bp . This study reconstructed the environmental history of Grande Valley during the mid–late Holocene, provides the missing marine record of historical climate for the western coast of Fildes Peninsula and lays the foundation for further study of the climate and environment changes therein. Our finding that the sea level was c. 12 m a.m.s.l. at 2000 cal. yr bp allows for detailed reconstruction of Holocene sea level variations. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica King George Island Cambridge University Press King George Island Fildes ENVELOPE(-58.817,-58.817,-62.217,-62.217) Fildes peninsula ENVELOPE(-58.948,-58.948,-62.182,-62.182) Grande Valley ENVELOPE(-58.990,-58.990,-62.198,-62.198) Antarctic Science 29 6 545 554 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Chu, Zhuding Sun, Liguang Wang, Yuhong Huang, Tao Zhou, Xin Depositional environment and climate changes during the Holocene in Grande Valley, Fildes Peninsula, King George Island, Antarctica |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract A 9.24 m sediment core, GA-2, was collected on the coastal platform of Grande Valley, a relatively narrow and shallow fjord in Fildes Peninsula, King George Island, Antarctica. The sediment was formed between 6600 and 2000 cal. yr bp according to accelerator mass spectrometry (AMS) 14 C dating of five bulk sediment samples. The comprehensive proxy indicators (grain size, loss on ignition at 550°C, magnetic susceptibility, elements) were analysed, and three separate depositional environments and an alternating climate change pattern were identified. Grande Valley experienced a warm marine environment between 6600 and 5800 cal. yr bp , a minor cooling between 5800 and 4800 cal. yr bp , the transition from cool to warm during 4800–4400 cal. yr bp , a mid-Holocene climatic optimum between 4400 and 2700 cal. yr bp , and the onset of the Neoglacial at 2700 cal. yr bp . This study reconstructed the environmental history of Grande Valley during the mid–late Holocene, provides the missing marine record of historical climate for the western coast of Fildes Peninsula and lays the foundation for further study of the climate and environment changes therein. Our finding that the sea level was c. 12 m a.m.s.l. at 2000 cal. yr bp allows for detailed reconstruction of Holocene sea level variations. |
format |
Article in Journal/Newspaper |
author |
Chu, Zhuding Sun, Liguang Wang, Yuhong Huang, Tao Zhou, Xin |
author_facet |
Chu, Zhuding Sun, Liguang Wang, Yuhong Huang, Tao Zhou, Xin |
author_sort |
Chu, Zhuding |
title |
Depositional environment and climate changes during the Holocene in Grande Valley, Fildes Peninsula, King George Island, Antarctica |
title_short |
Depositional environment and climate changes during the Holocene in Grande Valley, Fildes Peninsula, King George Island, Antarctica |
title_full |
Depositional environment and climate changes during the Holocene in Grande Valley, Fildes Peninsula, King George Island, Antarctica |
title_fullStr |
Depositional environment and climate changes during the Holocene in Grande Valley, Fildes Peninsula, King George Island, Antarctica |
title_full_unstemmed |
Depositional environment and climate changes during the Holocene in Grande Valley, Fildes Peninsula, King George Island, Antarctica |
title_sort |
depositional environment and climate changes during the holocene in grande valley, fildes peninsula, king george island, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2017 |
url |
http://dx.doi.org/10.1017/s095410201700030x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410201700030X |
long_lat |
ENVELOPE(-58.817,-58.817,-62.217,-62.217) ENVELOPE(-58.948,-58.948,-62.182,-62.182) ENVELOPE(-58.990,-58.990,-62.198,-62.198) |
geographic |
King George Island Fildes Fildes peninsula Grande Valley |
geographic_facet |
King George Island Fildes Fildes peninsula Grande Valley |
genre |
Antarc* Antarctic Science Antarctica King George Island |
genre_facet |
Antarc* Antarctic Science Antarctica King George Island |
op_source |
Antarctic Science volume 29, issue 6, page 545-554 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s095410201700030x |
container_title |
Antarctic Science |
container_volume |
29 |
container_issue |
6 |
container_start_page |
545 |
op_container_end_page |
554 |
_version_ |
1792507356279472128 |