Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard): environmental and climatic implications for the late Holocene
Ice wedges are widespread periglacial features in the landscape of Adventdalen, Svalbard. The networks of ice wedges have created areas with well-developed polygonal terrains in the lowest fluvial terraces in this valley. We have examined the sedimentological characteristics of the northern and sout...
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ftunivlisboa:oai:repositorio.ul.pt:10451/28309 2023-05-15T13:05:34+02:00 Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard): environmental and climatic implications for the late Holocene Oliva, Marc Vieira, Goncalo Pina, P. Pereira, P. Neves, Mário Freitas, M. C. 2017-07-11T15:34:06Z http://hdl.handle.net/10451/28309 https://doi.org/10.5194/se-5-901-2014 eng eng Copernicus Publications Oliva, M., Vieira, G., Pina, P., Pereira, P., Neves, M., and Freitas, M. C.: Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard) – environmental and climatic implications for the late Holocene, Solid Earth, 5, 901-914, https://doi.org/10.5194/se-5-901-2014, 2014 1869-9510 1869-9529 http://hdl.handle.net/10451/28309 doi:10.5194/se-5-901-2014 openAccess late Holocene Sedimentological characteristics ice-wedge polygon terrain Adventdalen (Svalbard) environmental implications climatic implications article 2017 ftunivlisboa https://doi.org/10.5194/se-5-901-2014 2022-05-25T18:37:00Z Ice wedges are widespread periglacial features in the landscape of Adventdalen, Svalbard. The networks of ice wedges have created areas with well-developed polygonal terrains in the lowest fluvial terraces in this valley. We have examined the sedimentological characteristics of the northern and southern banks of the Advent river for palaeoenvironmental purposes. The base of two sedimentary sections reported radiocarbon dates of 3.3 and 3.9 ka BP, respectively. The northern site is constituted by three very different lithostratigraphical units, which suggests that their formation should be related to different environmental and climate conditions. By contrast, the southern section shows a rather homogeneous composition, with no significant variations in grain size and organic matter content. In both cases the uppermost sediments are constituted by a thick aeolian deposit. According to our data, warmer climate conditions may have prevailed during the mid Holocene until 3.3 ka BP with widespread peat formation in the valley bottom. Subsequently, a period with alternating soil formation and aeolian sedimentation took place from 3 to 2.5 ka BP, probably due to increasing climatic severity. During the last millennium a long-term cooling trend has favoured aeolian deposition in the lowest part of Adventdalen. info:eu-repo/semantics/publishedVersion Article in Journal/Newspaper Adventdalen Svalbard Universidade de Lisboa: repositório.UL Adventdalen ENVELOPE(16.264,16.264,78.181,78.181) Svalbard Solid Earth 5 2 901 914 |
institution |
Open Polar |
collection |
Universidade de Lisboa: repositório.UL |
op_collection_id |
ftunivlisboa |
language |
English |
topic |
late Holocene Sedimentological characteristics ice-wedge polygon terrain Adventdalen (Svalbard) environmental implications climatic implications |
spellingShingle |
late Holocene Sedimentological characteristics ice-wedge polygon terrain Adventdalen (Svalbard) environmental implications climatic implications Oliva, Marc Vieira, Goncalo Pina, P. Pereira, P. Neves, Mário Freitas, M. C. Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard): environmental and climatic implications for the late Holocene |
topic_facet |
late Holocene Sedimentological characteristics ice-wedge polygon terrain Adventdalen (Svalbard) environmental implications climatic implications |
description |
Ice wedges are widespread periglacial features in the landscape of Adventdalen, Svalbard. The networks of ice wedges have created areas with well-developed polygonal terrains in the lowest fluvial terraces in this valley. We have examined the sedimentological characteristics of the northern and southern banks of the Advent river for palaeoenvironmental purposes. The base of two sedimentary sections reported radiocarbon dates of 3.3 and 3.9 ka BP, respectively. The northern site is constituted by three very different lithostratigraphical units, which suggests that their formation should be related to different environmental and climate conditions. By contrast, the southern section shows a rather homogeneous composition, with no significant variations in grain size and organic matter content. In both cases the uppermost sediments are constituted by a thick aeolian deposit. According to our data, warmer climate conditions may have prevailed during the mid Holocene until 3.3 ka BP with widespread peat formation in the valley bottom. Subsequently, a period with alternating soil formation and aeolian sedimentation took place from 3 to 2.5 ka BP, probably due to increasing climatic severity. During the last millennium a long-term cooling trend has favoured aeolian deposition in the lowest part of Adventdalen. info:eu-repo/semantics/publishedVersion |
format |
Article in Journal/Newspaper |
author |
Oliva, Marc Vieira, Goncalo Pina, P. Pereira, P. Neves, Mário Freitas, M. C. |
author_facet |
Oliva, Marc Vieira, Goncalo Pina, P. Pereira, P. Neves, Mário Freitas, M. C. |
author_sort |
Oliva, Marc |
title |
Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard): environmental and climatic implications for the late Holocene |
title_short |
Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard): environmental and climatic implications for the late Holocene |
title_full |
Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard): environmental and climatic implications for the late Holocene |
title_fullStr |
Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard): environmental and climatic implications for the late Holocene |
title_full_unstemmed |
Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard): environmental and climatic implications for the late Holocene |
title_sort |
sedimentological characteristics of ice-wedge polygon terrain in adventdalen (svalbard): environmental and climatic implications for the late holocene |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
http://hdl.handle.net/10451/28309 https://doi.org/10.5194/se-5-901-2014 |
long_lat |
ENVELOPE(16.264,16.264,78.181,78.181) |
geographic |
Adventdalen Svalbard |
geographic_facet |
Adventdalen Svalbard |
genre |
Adventdalen Svalbard |
genre_facet |
Adventdalen Svalbard |
op_relation |
Oliva, M., Vieira, G., Pina, P., Pereira, P., Neves, M., and Freitas, M. C.: Sedimentological characteristics of ice-wedge polygon terrain in Adventdalen (Svalbard) – environmental and climatic implications for the late Holocene, Solid Earth, 5, 901-914, https://doi.org/10.5194/se-5-901-2014, 2014 1869-9510 1869-9529 http://hdl.handle.net/10451/28309 doi:10.5194/se-5-901-2014 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.5194/se-5-901-2014 |
container_title |
Solid Earth |
container_volume |
5 |
container_issue |
2 |
container_start_page |
901 |
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914 |
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1766387790472282112 |