Late Quaternary sedimentation and permafrost development in a Svalbard fjord-valley, Norwegian high Arctic
The infilling history of the Adventdalen fjord-valley in central Spitsbergen is reconstructed, with a focus on permafrost development, based on sedimentological and cryostratigraphic evidence from drilling cores. The techniques of optically stimulated luminescence and radiocarbon accelerator mass-sp...
Published in: | Sedimentology |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | https://orbit.dtu.dk/en/publications/e6e1d6ca-0fcf-4ffc-a9bc-c1979af1738a https://doi.org/10.1111/sed.12476 |
id |
ftdtupubl:oai:pure.atira.dk:publications/e6e1d6ca-0fcf-4ffc-a9bc-c1979af1738a |
---|---|
record_format |
openpolar |
spelling |
ftdtupubl:oai:pure.atira.dk:publications/e6e1d6ca-0fcf-4ffc-a9bc-c1979af1738a 2024-09-15T17:35:08+00:00 Late Quaternary sedimentation and permafrost development in a Svalbard fjord-valley, Norwegian high Arctic Gilbert, Graham L. O'Neill, Hugh B. Nemec, Wojciech Thiel, Christine Christiansen, Hanne H. Buylaert, Jan-Pieter 2018 https://orbit.dtu.dk/en/publications/e6e1d6ca-0fcf-4ffc-a9bc-c1979af1738a https://doi.org/10.1111/sed.12476 eng eng https://orbit.dtu.dk/en/publications/e6e1d6ca-0fcf-4ffc-a9bc-c1979af1738a info:eu-repo/semantics/closedAccess Gilbert , G L , O'Neill , H B , Nemec , W , Thiel , C , Christiansen , H H & Buylaert , J-P 2018 , ' Late Quaternary sedimentation and permafrost development in a Svalbard fjord-valley, Norwegian high Arctic ' , Sedimentology , vol. 65 , no. 7 , pp. 2531-2558 . https://doi.org/10.1111/sed.12476 Adventdalen Cryofacies Cryostratigraphy Fjord-head delta Ground ice Sedimentary facies Spitsbergen article 2018 ftdtupubl https://doi.org/10.1111/sed.12476 2024-07-22T23:50:05Z The infilling history of the Adventdalen fjord-valley in central Spitsbergen is reconstructed, with a focus on permafrost development, based on sedimentological and cryostratigraphic evidence from drilling cores. The techniques of optically stimulated luminescence and radiocarbon accelerator mass-spectrometry dating were used to establish sediment chronology. The fjord-fill sedimentary succession includes the fjord-bottom late Weichselian subglacial till of the Last Glacial Maximum, the early Holocene muddy glaciomarine deposits with ice-rafted debris formed during the fjord deglaciation, and the younger Holocene deposits of a fjord-head Gilbert-type delta of which the fluvial distributary plain shows raised alluvial terraces hosting aeolian sedimentation. This sedimentary record of the last glaciation/deglaciation cycle is interpreted in terms of sequence stratigraphy. Zones of epigenetic and syngenetic permafrost are recognized from the vertical distribution of cryofacies, with a conclusion that the formation of permafrost commenced and extended down-fjord as the fluvio-deltaic fjord-fill was gradually reaching subaerial exposure. The upwards-grown syngenetic permafrost and the top part of downwards-grown epigenetic permafrost below contain excess ice in a suite of cryofacies indicating ground-ice segregation and segregative intrusion. The deeper epigenetic permafrost is ice-poor and contains cryofacies formed solely by segregation processes. This case study may serve as an analogue for other similar Arctic fjord-valleys where the fjord-head shoreline was established during the post-Weichselian deglaciation. Article in Journal/Newspaper Adventdalen Arctic Ice permafrost Svalbard Spitsbergen Technical University of Denmark: DTU Orbit Sedimentology 65 7 2531 2558 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Adventdalen Cryofacies Cryostratigraphy Fjord-head delta Ground ice Sedimentary facies Spitsbergen |
spellingShingle |
Adventdalen Cryofacies Cryostratigraphy Fjord-head delta Ground ice Sedimentary facies Spitsbergen Gilbert, Graham L. O'Neill, Hugh B. Nemec, Wojciech Thiel, Christine Christiansen, Hanne H. Buylaert, Jan-Pieter Late Quaternary sedimentation and permafrost development in a Svalbard fjord-valley, Norwegian high Arctic |
topic_facet |
Adventdalen Cryofacies Cryostratigraphy Fjord-head delta Ground ice Sedimentary facies Spitsbergen |
description |
The infilling history of the Adventdalen fjord-valley in central Spitsbergen is reconstructed, with a focus on permafrost development, based on sedimentological and cryostratigraphic evidence from drilling cores. The techniques of optically stimulated luminescence and radiocarbon accelerator mass-spectrometry dating were used to establish sediment chronology. The fjord-fill sedimentary succession includes the fjord-bottom late Weichselian subglacial till of the Last Glacial Maximum, the early Holocene muddy glaciomarine deposits with ice-rafted debris formed during the fjord deglaciation, and the younger Holocene deposits of a fjord-head Gilbert-type delta of which the fluvial distributary plain shows raised alluvial terraces hosting aeolian sedimentation. This sedimentary record of the last glaciation/deglaciation cycle is interpreted in terms of sequence stratigraphy. Zones of epigenetic and syngenetic permafrost are recognized from the vertical distribution of cryofacies, with a conclusion that the formation of permafrost commenced and extended down-fjord as the fluvio-deltaic fjord-fill was gradually reaching subaerial exposure. The upwards-grown syngenetic permafrost and the top part of downwards-grown epigenetic permafrost below contain excess ice in a suite of cryofacies indicating ground-ice segregation and segregative intrusion. The deeper epigenetic permafrost is ice-poor and contains cryofacies formed solely by segregation processes. This case study may serve as an analogue for other similar Arctic fjord-valleys where the fjord-head shoreline was established during the post-Weichselian deglaciation. |
format |
Article in Journal/Newspaper |
author |
Gilbert, Graham L. O'Neill, Hugh B. Nemec, Wojciech Thiel, Christine Christiansen, Hanne H. Buylaert, Jan-Pieter |
author_facet |
Gilbert, Graham L. O'Neill, Hugh B. Nemec, Wojciech Thiel, Christine Christiansen, Hanne H. Buylaert, Jan-Pieter |
author_sort |
Gilbert, Graham L. |
title |
Late Quaternary sedimentation and permafrost development in a Svalbard fjord-valley, Norwegian high Arctic |
title_short |
Late Quaternary sedimentation and permafrost development in a Svalbard fjord-valley, Norwegian high Arctic |
title_full |
Late Quaternary sedimentation and permafrost development in a Svalbard fjord-valley, Norwegian high Arctic |
title_fullStr |
Late Quaternary sedimentation and permafrost development in a Svalbard fjord-valley, Norwegian high Arctic |
title_full_unstemmed |
Late Quaternary sedimentation and permafrost development in a Svalbard fjord-valley, Norwegian high Arctic |
title_sort |
late quaternary sedimentation and permafrost development in a svalbard fjord-valley, norwegian high arctic |
publishDate |
2018 |
url |
https://orbit.dtu.dk/en/publications/e6e1d6ca-0fcf-4ffc-a9bc-c1979af1738a https://doi.org/10.1111/sed.12476 |
genre |
Adventdalen Arctic Ice permafrost Svalbard Spitsbergen |
genre_facet |
Adventdalen Arctic Ice permafrost Svalbard Spitsbergen |
op_source |
Gilbert , G L , O'Neill , H B , Nemec , W , Thiel , C , Christiansen , H H & Buylaert , J-P 2018 , ' Late Quaternary sedimentation and permafrost development in a Svalbard fjord-valley, Norwegian high Arctic ' , Sedimentology , vol. 65 , no. 7 , pp. 2531-2558 . https://doi.org/10.1111/sed.12476 |
op_relation |
https://orbit.dtu.dk/en/publications/e6e1d6ca-0fcf-4ffc-a9bc-c1979af1738a |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1111/sed.12476 |
container_title |
Sedimentology |
container_volume |
65 |
container_issue |
7 |
container_start_page |
2531 |
op_container_end_page |
2558 |
_version_ |
1810441197297074176 |