Depositional environment of the Laptev Sea (Arctic Siberia) during the Holocene

The Holocene depositional setting of the Laptev Sea was studied using three marine sediment cores from water depths between 77 and 46 m. Based on sedimentary parameters (TOC content, δ 13 C org , sedimentation rates) controlled by radiocarbon age models the palaeoenvironment of a strongly coupled ri...

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Published in:Boreas
Main Authors: BAUCH, HENNING A., KASSENS, HEIDEMARIE, ERLENKEUSER, HELMUT, GROOTES, PIETER M., THIEDE, JÖRN
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 1999
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Online Access:http://dx.doi.org/10.1111/j.1502-3885.1999.tb00214.x
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spelling crwiley:10.1111/j.1502-3885.1999.tb00214.x 2024-06-02T08:02:22+00:00 Depositional environment of the Laptev Sea (Arctic Siberia) during the Holocene BAUCH, HENNING A. KASSENS, HEIDEMARIE ERLENKEUSER, HELMUT GROOTES, PIETER M. THIEDE, JÖRN 1999 http://dx.doi.org/10.1111/j.1502-3885.1999.tb00214.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.1999.tb00214.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.1999.tb00214.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 28, issue 1, page 194-204 ISSN 0300-9483 1502-3885 journal-article 1999 crwiley https://doi.org/10.1111/j.1502-3885.1999.tb00214.x 2024-05-03T10:39:36Z The Holocene depositional setting of the Laptev Sea was studied using three marine sediment cores from water depths between 77 and 46 m. Based on sedimentary parameters (TOC content, δ 13 C org , sedimentation rates) controlled by radiocarbon age models the palaeoenvironment of a strongly coupled river‐shelf system was reconstructed since ˜11 ka BP. Caused by a transgressing sea after the last glaciation, all cores reveal progressive decreases in sedimentation rates. Using the sedimentary records of a core from the Khatanga‐Anabar river channel in the western Laptev Sea, several phases of change are recognized: (1) an early period lasted until ˜10 ka BP characterized by an increased deposition of plant debris due to shelf erosion and fluvial runoff; (2) a transitional phase with consistently increasing marine conditions until 6 ka BP, which was marked at its beginning near 10 ka BP by the first occurrence of marine bivalves, high TOC content and an increase in δ 13 C org (3) a time of extremely slow deposition of sediments, commencing at ˜6 ka BP and interpreted as Holocene sea‐level highstand, which caused a southward retreat of the depositional centres within the now submerged river channels on the shelf; (4) a final phase with the establishment of modern conditions after ˜2 ka BP. Article in Journal/Newspaper Arctic khatanga laptev Laptev Sea Siberia Wiley Online Library Arctic Laptev Sea Anabar ENVELOPE(113.624,113.624,73.286,73.286) Boreas 28 1 194 204
institution Open Polar
collection Wiley Online Library
op_collection_id crwiley
language English
description The Holocene depositional setting of the Laptev Sea was studied using three marine sediment cores from water depths between 77 and 46 m. Based on sedimentary parameters (TOC content, δ 13 C org , sedimentation rates) controlled by radiocarbon age models the palaeoenvironment of a strongly coupled river‐shelf system was reconstructed since ˜11 ka BP. Caused by a transgressing sea after the last glaciation, all cores reveal progressive decreases in sedimentation rates. Using the sedimentary records of a core from the Khatanga‐Anabar river channel in the western Laptev Sea, several phases of change are recognized: (1) an early period lasted until ˜10 ka BP characterized by an increased deposition of plant debris due to shelf erosion and fluvial runoff; (2) a transitional phase with consistently increasing marine conditions until 6 ka BP, which was marked at its beginning near 10 ka BP by the first occurrence of marine bivalves, high TOC content and an increase in δ 13 C org (3) a time of extremely slow deposition of sediments, commencing at ˜6 ka BP and interpreted as Holocene sea‐level highstand, which caused a southward retreat of the depositional centres within the now submerged river channels on the shelf; (4) a final phase with the establishment of modern conditions after ˜2 ka BP.
format Article in Journal/Newspaper
author BAUCH, HENNING A.
KASSENS, HEIDEMARIE
ERLENKEUSER, HELMUT
GROOTES, PIETER M.
THIEDE, JÖRN
spellingShingle BAUCH, HENNING A.
KASSENS, HEIDEMARIE
ERLENKEUSER, HELMUT
GROOTES, PIETER M.
THIEDE, JÖRN
Depositional environment of the Laptev Sea (Arctic Siberia) during the Holocene
author_facet BAUCH, HENNING A.
KASSENS, HEIDEMARIE
ERLENKEUSER, HELMUT
GROOTES, PIETER M.
THIEDE, JÖRN
author_sort BAUCH, HENNING A.
title Depositional environment of the Laptev Sea (Arctic Siberia) during the Holocene
title_short Depositional environment of the Laptev Sea (Arctic Siberia) during the Holocene
title_full Depositional environment of the Laptev Sea (Arctic Siberia) during the Holocene
title_fullStr Depositional environment of the Laptev Sea (Arctic Siberia) during the Holocene
title_full_unstemmed Depositional environment of the Laptev Sea (Arctic Siberia) during the Holocene
title_sort depositional environment of the laptev sea (arctic siberia) during the holocene
publisher Wiley
publishDate 1999
url http://dx.doi.org/10.1111/j.1502-3885.1999.tb00214.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.1999.tb00214.x
https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.1999.tb00214.x
long_lat ENVELOPE(113.624,113.624,73.286,73.286)
geographic Arctic
Laptev Sea
Anabar
geographic_facet Arctic
Laptev Sea
Anabar
genre Arctic
khatanga
laptev
Laptev Sea
Siberia
genre_facet Arctic
khatanga
laptev
Laptev Sea
Siberia
op_source Boreas
volume 28, issue 1, page 194-204
ISSN 0300-9483 1502-3885
op_rights http://onlinelibrary.wiley.com/termsAndConditions#vor
op_doi https://doi.org/10.1111/j.1502-3885.1999.tb00214.x
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