The Evolution of Watts Lake, Vestfold Hills, East Antarctica, from marine inlet to freshwater lake
Watts Lake is a 0.38 km 2 freshwater lake in the Vestfold Hills, East Antarctica (68°35′S 78°00′E) that was formerly a marine embayment. The water level of the lake is currently rising, it is now at -5.8 m altitude. The lake currently has a maximum salinity of 2.4 g 1 -1 and no outlet. Abundant Holo...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Language: | English |
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1986
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Online Access: | https://researchers.mq.edu.au/en/publications/4fac60eb-80e0-4ba0-8780-1ae475427144 https://doi.org/10.1016/0031-0182(86)90063-5 http://www.scopus.com/inward/record.url?scp=0022896402&partnerID=8YFLogxK |
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/4fac60eb-80e0-4ba0-8780-1ae475427144 2023-05-15T14:01:24+02:00 The Evolution of Watts Lake, Vestfold Hills, East Antarctica, from marine inlet to freshwater lake Pickard, John Adamson, D. A. Heath, Colin W. 1986 https://researchers.mq.edu.au/en/publications/4fac60eb-80e0-4ba0-8780-1ae475427144 https://doi.org/10.1016/0031-0182(86)90063-5 http://www.scopus.com/inward/record.url?scp=0022896402&partnerID=8YFLogxK eng eng info:eu-repo/semantics/closedAccess Pickard , J , Adamson , D A & Heath , C W 1986 , ' The Evolution of Watts Lake, Vestfold Hills, East Antarctica, from marine inlet to freshwater lake ' , Palaeogeography, Palaeoclimatology, Palaeoecology , vol. 53 , no. 2-4 , pp. 271-288 . https://doi.org/10.1016/0031-0182(86)90063-5 article 1986 ftmacquarieunicr https://doi.org/10.1016/0031-0182(86)90063-5 2022-11-06T06:50:05Z Watts Lake is a 0.38 km 2 freshwater lake in the Vestfold Hills, East Antarctica (68°35′S 78°00′E) that was formerly a marine embayment. The water level of the lake is currently rising, it is now at -5.8 m altitude. The lake currently has a maximum salinity of 2.4 g 1 -1 and no outlet. Abundant Holocene marine fossil molluscs, polychaetes and algae dated at 4700-8000 14 C yr B.P. indicate that the lake was one basin of a complex marine inlet during the early to mid Holocene. A prominent terrace formed in the tide zone during this period. Processes involved in terrace formation are discussed using Watts Lake as an example. Other basins of this inlet have now become saline or hypersaline. Isostatic uplift isolated the whole inlet from the sea and allowed the basins to become separate lakes. From 3000-4000 14 C yr B.P. copious volumes of freshwater from nearby stagnant ice and possibly from a major river system poured into Watts Lake displacing the salt water over a sill at the eastern end. Within 2000 yr the lake was fresh. Freshwater inflow declined and the lake level began to fall from evaporation. Cyanobacterial stromatolites formed from 2800 to 1700 14 C yr B.P. at the eastern end of the lake. At least two other lakes in the Hills have similar histories. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Macquarie University Research Portal East Antarctica Vestfold Hills Vestfold Watts Lake ENVELOPE(78.219,78.219,-68.603,-68.603) Palaeogeography, Palaeoclimatology, Palaeoecology 53 2-4 271 288 |
institution |
Open Polar |
collection |
Macquarie University Research Portal |
op_collection_id |
ftmacquarieunicr |
language |
English |
description |
Watts Lake is a 0.38 km 2 freshwater lake in the Vestfold Hills, East Antarctica (68°35′S 78°00′E) that was formerly a marine embayment. The water level of the lake is currently rising, it is now at -5.8 m altitude. The lake currently has a maximum salinity of 2.4 g 1 -1 and no outlet. Abundant Holocene marine fossil molluscs, polychaetes and algae dated at 4700-8000 14 C yr B.P. indicate that the lake was one basin of a complex marine inlet during the early to mid Holocene. A prominent terrace formed in the tide zone during this period. Processes involved in terrace formation are discussed using Watts Lake as an example. Other basins of this inlet have now become saline or hypersaline. Isostatic uplift isolated the whole inlet from the sea and allowed the basins to become separate lakes. From 3000-4000 14 C yr B.P. copious volumes of freshwater from nearby stagnant ice and possibly from a major river system poured into Watts Lake displacing the salt water over a sill at the eastern end. Within 2000 yr the lake was fresh. Freshwater inflow declined and the lake level began to fall from evaporation. Cyanobacterial stromatolites formed from 2800 to 1700 14 C yr B.P. at the eastern end of the lake. At least two other lakes in the Hills have similar histories. |
format |
Article in Journal/Newspaper |
author |
Pickard, John Adamson, D. A. Heath, Colin W. |
spellingShingle |
Pickard, John Adamson, D. A. Heath, Colin W. The Evolution of Watts Lake, Vestfold Hills, East Antarctica, from marine inlet to freshwater lake |
author_facet |
Pickard, John Adamson, D. A. Heath, Colin W. |
author_sort |
Pickard, John |
title |
The Evolution of Watts Lake, Vestfold Hills, East Antarctica, from marine inlet to freshwater lake |
title_short |
The Evolution of Watts Lake, Vestfold Hills, East Antarctica, from marine inlet to freshwater lake |
title_full |
The Evolution of Watts Lake, Vestfold Hills, East Antarctica, from marine inlet to freshwater lake |
title_fullStr |
The Evolution of Watts Lake, Vestfold Hills, East Antarctica, from marine inlet to freshwater lake |
title_full_unstemmed |
The Evolution of Watts Lake, Vestfold Hills, East Antarctica, from marine inlet to freshwater lake |
title_sort |
evolution of watts lake, vestfold hills, east antarctica, from marine inlet to freshwater lake |
publishDate |
1986 |
url |
https://researchers.mq.edu.au/en/publications/4fac60eb-80e0-4ba0-8780-1ae475427144 https://doi.org/10.1016/0031-0182(86)90063-5 http://www.scopus.com/inward/record.url?scp=0022896402&partnerID=8YFLogxK |
long_lat |
ENVELOPE(78.219,78.219,-68.603,-68.603) |
geographic |
East Antarctica Vestfold Hills Vestfold Watts Lake |
geographic_facet |
East Antarctica Vestfold Hills Vestfold Watts Lake |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_source |
Pickard , J , Adamson , D A & Heath , C W 1986 , ' The Evolution of Watts Lake, Vestfold Hills, East Antarctica, from marine inlet to freshwater lake ' , Palaeogeography, Palaeoclimatology, Palaeoecology , vol. 53 , no. 2-4 , pp. 271-288 . https://doi.org/10.1016/0031-0182(86)90063-5 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/0031-0182(86)90063-5 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
53 |
container_issue |
2-4 |
container_start_page |
271 |
op_container_end_page |
288 |
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1766271221308063744 |