Depositional environments and sea‐level changes deduced from Middle Weichselian tidally influenced sediments, Arkhangelsk region, northwestern Russia
Deposits from a Middle Weichselian transgression, the Mezen Transgression, are found in coastal sections in the Mezen and Chyorskaya Bays, northwestern Russia. The marine event is bracketed between two ice advances from the Barents and Kara Sea shelves and dated by Optically Stimulated Luminescence...
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crwiley:10.1080/03009480600781941 2024-06-02T08:03:01+00:00 Depositional environments and sea‐level changes deduced from Middle Weichselian tidally influenced sediments, Arkhangelsk region, northwestern Russia JENSEN, MARIA LARSEN, EILIV DEMIDOV, IGOR N. FUNDER, SVEND KJæR, KURT H. 2006 http://dx.doi.org/10.1080/03009480600781941 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1080%2F03009480600781941 https://onlinelibrary.wiley.com/doi/pdf/10.1080/03009480600781941 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 35, issue 3, page 521-538 ISSN 0300-9483 1502-3885 journal-article 2006 crwiley https://doi.org/10.1080/03009480600781941 2024-05-03T11:24:42Z Deposits from a Middle Weichselian transgression, the Mezen Transgression, are found in coastal sections in the Mezen and Chyorskaya Bays, northwestern Russia. The marine event is bracketed between two ice advances from the Barents and Kara Sea shelves and dated by Optically Stimulated Luminescence (OSL) to around 60 kyr BP. The deposits represent a shallowing upward succession from offshore marine to intertidal coastal environments. Relative sea‐level maximum was at least 40 m above the present owing to significant isostatic subsidence. The sedimentary record is dominated by shallow‐marine, subtidal deposits bounded below by an erosion surface representing a downward shift in facies and above by subaerial exposure. The succession reflects deposition during forced regression due to isostatic uplift. A rapidly aggrading succession of subtidal deposits at one site suggests a relative sea‐level rise or stillstand superimposed on the isostatically controlled sea‐level fall. The rhythmic tidal deposits allow identification of semi‐monthly to yearly cycles, providing an estimate of the sedimentation rate of 39 cm/year. This implies a high sediment yield and a rapid relative sea‐level rise. We correlate this signal with the rapid eustatic sea‐level rise at the end of OIS 4 known from deep‐sea records. Article in Journal/Newspaper Arkhangelsk Kara Sea Mezen Mezen' Wiley Online Library Kara Sea Boreas 35 3 521 538 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Deposits from a Middle Weichselian transgression, the Mezen Transgression, are found in coastal sections in the Mezen and Chyorskaya Bays, northwestern Russia. The marine event is bracketed between two ice advances from the Barents and Kara Sea shelves and dated by Optically Stimulated Luminescence (OSL) to around 60 kyr BP. The deposits represent a shallowing upward succession from offshore marine to intertidal coastal environments. Relative sea‐level maximum was at least 40 m above the present owing to significant isostatic subsidence. The sedimentary record is dominated by shallow‐marine, subtidal deposits bounded below by an erosion surface representing a downward shift in facies and above by subaerial exposure. The succession reflects deposition during forced regression due to isostatic uplift. A rapidly aggrading succession of subtidal deposits at one site suggests a relative sea‐level rise or stillstand superimposed on the isostatically controlled sea‐level fall. The rhythmic tidal deposits allow identification of semi‐monthly to yearly cycles, providing an estimate of the sedimentation rate of 39 cm/year. This implies a high sediment yield and a rapid relative sea‐level rise. We correlate this signal with the rapid eustatic sea‐level rise at the end of OIS 4 known from deep‐sea records. |
format |
Article in Journal/Newspaper |
author |
JENSEN, MARIA LARSEN, EILIV DEMIDOV, IGOR N. FUNDER, SVEND KJæR, KURT H. |
spellingShingle |
JENSEN, MARIA LARSEN, EILIV DEMIDOV, IGOR N. FUNDER, SVEND KJæR, KURT H. Depositional environments and sea‐level changes deduced from Middle Weichselian tidally influenced sediments, Arkhangelsk region, northwestern Russia |
author_facet |
JENSEN, MARIA LARSEN, EILIV DEMIDOV, IGOR N. FUNDER, SVEND KJæR, KURT H. |
author_sort |
JENSEN, MARIA |
title |
Depositional environments and sea‐level changes deduced from Middle Weichselian tidally influenced sediments, Arkhangelsk region, northwestern Russia |
title_short |
Depositional environments and sea‐level changes deduced from Middle Weichselian tidally influenced sediments, Arkhangelsk region, northwestern Russia |
title_full |
Depositional environments and sea‐level changes deduced from Middle Weichselian tidally influenced sediments, Arkhangelsk region, northwestern Russia |
title_fullStr |
Depositional environments and sea‐level changes deduced from Middle Weichselian tidally influenced sediments, Arkhangelsk region, northwestern Russia |
title_full_unstemmed |
Depositional environments and sea‐level changes deduced from Middle Weichselian tidally influenced sediments, Arkhangelsk region, northwestern Russia |
title_sort |
depositional environments and sea‐level changes deduced from middle weichselian tidally influenced sediments, arkhangelsk region, northwestern russia |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1080/03009480600781941 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1080%2F03009480600781941 https://onlinelibrary.wiley.com/doi/pdf/10.1080/03009480600781941 |
geographic |
Kara Sea |
geographic_facet |
Kara Sea |
genre |
Arkhangelsk Kara Sea Mezen Mezen' |
genre_facet |
Arkhangelsk Kara Sea Mezen Mezen' |
op_source |
Boreas volume 35, issue 3, page 521-538 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1080/03009480600781941 |
container_title |
Boreas |
container_volume |
35 |
container_issue |
3 |
container_start_page |
521 |
op_container_end_page |
538 |
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1800747471122464768 |