The deglaciation of Barton Peninsula (King George Island, South Shetland Islands, Antarctica) based on geomorphological evidence and lacustrine records
Abstract Barton Peninsula is an ice-free area located in the southwest corner of King George Island (South Shetland Islands, Antarctica). Following the Last Glacial Maximum, several geomorphological features developed in newly exposed ice-free terrain and their distribution provide insights about pa...
Published in: | Polar Record |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2019
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0032247419000469 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247419000469 |
id |
crcambridgeupr:10.1017/s0032247419000469 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0032247419000469 2024-06-23T07:46:18+00:00 The deglaciation of Barton Peninsula (King George Island, South Shetland Islands, Antarctica) based on geomorphological evidence and lacustrine records Oliva, Marc Antoniades, Dermot Serrano, Enrique Giralt, Santiago Liu, Emma J. Granados, Ignacio Pla-Rabes, Sergi Toro, Manuel Hong, Soon Gyu Vieira, Gonçalo 2019 http://dx.doi.org/10.1017/s0032247419000469 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247419000469 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Polar Record volume 55, issue 3, page 177-188 ISSN 0032-2474 1475-3057 journal-article 2019 crcambridgeupr https://doi.org/10.1017/s0032247419000469 2024-05-29T08:09:59Z Abstract Barton Peninsula is an ice-free area located in the southwest corner of King George Island (South Shetland Islands, Antarctica). Following the Last Glacial Maximum, several geomorphological features developed in newly exposed ice-free terrain and their distribution provide insights about past environmental evolution of the area. Three moraine systems are indicative of three main glacial phases within the long-term glacial retreat, which also favoured the development of numerous lakes. Five of these lakes were cored to understand in greater detail the pattern of deglaciation through the study of lacustrine records. Radiocarbon dates from basal lacustrine sediments enabled the reconstruction of the chronology of Holocene glacial retreat. Tephra layers present in lake sediments provided additional independent age constraints on environmental changes based on geochemical and geochronological correlation with Deception Island-derived tephra. Shrinking of the Collins Glacier exposed the southern coastal fringe of Barton Peninsula at 8 cal ky BP. After a period of relative stability during the mid-Holocene, the ice cap started retreating northwards after 3.7 cal ky BP, confining some glaciers within valleys as shown by moraine systems. Lake sediments confirm a period of relative glacial stability during the last 2.4 cal ky BP. Article in Journal/Newspaper Antarc* Antarctica Collins Glacier Deception Island Ice cap King George Island Polar Record South Shetland Islands Cambridge University Press Barton ENVELOPE(-58.733,-58.733,-62.233,-62.233) Barton Peninsula ENVELOPE(-58.741,-58.741,-62.227,-62.227) Collins Glacier ENVELOPE(65.308,65.308,-73.829,-73.829) Deception Island ENVELOPE(-60.633,-60.633,-62.950,-62.950) King George Island South Shetland Islands Polar Record 55 3 177 188 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Barton Peninsula is an ice-free area located in the southwest corner of King George Island (South Shetland Islands, Antarctica). Following the Last Glacial Maximum, several geomorphological features developed in newly exposed ice-free terrain and their distribution provide insights about past environmental evolution of the area. Three moraine systems are indicative of three main glacial phases within the long-term glacial retreat, which also favoured the development of numerous lakes. Five of these lakes were cored to understand in greater detail the pattern of deglaciation through the study of lacustrine records. Radiocarbon dates from basal lacustrine sediments enabled the reconstruction of the chronology of Holocene glacial retreat. Tephra layers present in lake sediments provided additional independent age constraints on environmental changes based on geochemical and geochronological correlation with Deception Island-derived tephra. Shrinking of the Collins Glacier exposed the southern coastal fringe of Barton Peninsula at 8 cal ky BP. After a period of relative stability during the mid-Holocene, the ice cap started retreating northwards after 3.7 cal ky BP, confining some glaciers within valleys as shown by moraine systems. Lake sediments confirm a period of relative glacial stability during the last 2.4 cal ky BP. |
format |
Article in Journal/Newspaper |
author |
Oliva, Marc Antoniades, Dermot Serrano, Enrique Giralt, Santiago Liu, Emma J. Granados, Ignacio Pla-Rabes, Sergi Toro, Manuel Hong, Soon Gyu Vieira, Gonçalo |
spellingShingle |
Oliva, Marc Antoniades, Dermot Serrano, Enrique Giralt, Santiago Liu, Emma J. Granados, Ignacio Pla-Rabes, Sergi Toro, Manuel Hong, Soon Gyu Vieira, Gonçalo The deglaciation of Barton Peninsula (King George Island, South Shetland Islands, Antarctica) based on geomorphological evidence and lacustrine records |
author_facet |
Oliva, Marc Antoniades, Dermot Serrano, Enrique Giralt, Santiago Liu, Emma J. Granados, Ignacio Pla-Rabes, Sergi Toro, Manuel Hong, Soon Gyu Vieira, Gonçalo |
author_sort |
Oliva, Marc |
title |
The deglaciation of Barton Peninsula (King George Island, South Shetland Islands, Antarctica) based on geomorphological evidence and lacustrine records |
title_short |
The deglaciation of Barton Peninsula (King George Island, South Shetland Islands, Antarctica) based on geomorphological evidence and lacustrine records |
title_full |
The deglaciation of Barton Peninsula (King George Island, South Shetland Islands, Antarctica) based on geomorphological evidence and lacustrine records |
title_fullStr |
The deglaciation of Barton Peninsula (King George Island, South Shetland Islands, Antarctica) based on geomorphological evidence and lacustrine records |
title_full_unstemmed |
The deglaciation of Barton Peninsula (King George Island, South Shetland Islands, Antarctica) based on geomorphological evidence and lacustrine records |
title_sort |
deglaciation of barton peninsula (king george island, south shetland islands, antarctica) based on geomorphological evidence and lacustrine records |
publisher |
Cambridge University Press (CUP) |
publishDate |
2019 |
url |
http://dx.doi.org/10.1017/s0032247419000469 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247419000469 |
long_lat |
ENVELOPE(-58.733,-58.733,-62.233,-62.233) ENVELOPE(-58.741,-58.741,-62.227,-62.227) ENVELOPE(65.308,65.308,-73.829,-73.829) ENVELOPE(-60.633,-60.633,-62.950,-62.950) |
geographic |
Barton Barton Peninsula Collins Glacier Deception Island King George Island South Shetland Islands |
geographic_facet |
Barton Barton Peninsula Collins Glacier Deception Island King George Island South Shetland Islands |
genre |
Antarc* Antarctica Collins Glacier Deception Island Ice cap King George Island Polar Record South Shetland Islands |
genre_facet |
Antarc* Antarctica Collins Glacier Deception Island Ice cap King George Island Polar Record South Shetland Islands |
op_source |
Polar Record volume 55, issue 3, page 177-188 ISSN 0032-2474 1475-3057 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0032247419000469 |
container_title |
Polar Record |
container_volume |
55 |
container_issue |
3 |
container_start_page |
177 |
op_container_end_page |
188 |
_version_ |
1802645071585083392 |