Advanced

MIS 3 sediment stratigraphy in southern Sweden sheds new light on the complex glacial history and dynamics across southern Scandinavia

Möller, Per LU ; Alexanderson, Helena LU ; ANJAR, JOHANNA LU and Björck, Svante LU (2020) In Boreas 49(3). p.389-416
Abstract
Recent studies have revealed that areas with sediments pre-dating the Last Glacial Maximum (LGM) are more common in southern Scandinavia than previously thought. To describe and date these sediments, four deep core drillings were made in the province of Småland and one in the province of Skåne, southern Sweden, and an existing sediment core drilled in the 1960s from western Skåne was re-examined and re-dated, all resulting in a total of 22 AMS 14C ages and 19 OSL ages. With some variation, the Småland cores revealed a stratigraphy consisting of two tills separated by proglacial glaciofluvial and glaciolacustrine sediments, dated to between 46 and 25 ka BP (Marine Isotope Stage (MIS) 3 to 2). We suggest that these sediments were deposited... (More)
Recent studies have revealed that areas with sediments pre-dating the Last Glacial Maximum (LGM) are more common in southern Scandinavia than previously thought. To describe and date these sediments, four deep core drillings were made in the province of Småland and one in the province of Skåne, southern Sweden, and an existing sediment core drilled in the 1960s from western Skåne was re-examined and re-dated, all resulting in a total of 22 AMS 14C ages and 19 OSL ages. With some variation, the Småland cores revealed a stratigraphy consisting of two tills separated by proglacial glaciofluvial and glaciolacustrine sediments, dated to between 46 and 25 ka BP (Marine Isotope Stage (MIS) 3 to 2). We suggest that these sediments were deposited during the ice retreat of the MIS 3 Ristinge glaciation over southern Scandinavia and the subsequent re-advance over the area in late MIS 3 and the transition to MIS 2, when the Fennoscandian Ice Sheet advanced towards its LGM marginal positions. This contrasts with the glacial history of southernmost Skåne, where an additional MIS 3 glacial advance through the Baltic Basin is suggested by the occurrence of a till named Allarp till. New ages from sediments under- and overlying this till suggest that it was deposited by the same Baltic ice advance that deposited the Klintholm till in Denmark (Klintholm Advance, c. 34-30 ka). (Less)
Abstract (Swedish)
Recent studies have revealed that areas with sediments pre-dating the Last Glacial Maximum (LGM) are more common in southern Scandinavia than previously thought. To describe and date these sediments, four deep core drillings were made in the province of Småland and one in the province of Skåne, southern Sweden, and an existing sediment core drilled in the 1960s from western Skåne was re-examined and re-dated, all resulting in a total of 22 AMS 14C ages and 19 OSL ages. With some variation, the Småland cores revealed a stratigraphy consisting of two tills separated by proglacial glaciofluvial and glaciolacustrine sediments, dated to between 46 and 25 ka BP (Marine Isotope Stage (MIS) 3 to MIS 2). We suggest that these sediments were... (More)
Recent studies have revealed that areas with sediments pre-dating the Last Glacial Maximum (LGM) are more common in southern Scandinavia than previously thought. To describe and date these sediments, four deep core drillings were made in the province of Småland and one in the province of Skåne, southern Sweden, and an existing sediment core drilled in the 1960s from western Skåne was re-examined and re-dated, all resulting in a total of 22 AMS 14C ages and 19 OSL ages. With some variation, the Småland cores revealed a stratigraphy consisting of two tills separated by proglacial glaciofluvial and glaciolacustrine sediments, dated to between 46 and 25 ka BP (Marine Isotope Stage (MIS) 3 to MIS 2). We suggest that these sediments were deposited during the ice retreat of the MIS 3 Ristinge glaciation over southern Scandinavia and the subsequent re-advance over the area in late MIS 3 and the transition into MIS 2, when the Fennoscandian Ice Sheet advanced towards its LGM ice marginal positions. This contrasts with the glacial history of southernmost Skåne, where till from at least one additional MIS 3 glacial advance through the Baltic basin, resulting in the deposition of the Allarp till. New ages from sediments under- and overlying this till suggest that it was deposited by the same Baltic ice advance which deposited the Klintholm till in Denmark (Klintholm Advance, c. 34-30 ka). (Less)
Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Boreas
volume
49
issue
3
pages
389 - 416
publisher
John Wiley and Sons
external identifiers
  • scopus:85078769996
ISSN
1502-3885
DOI
10.1111/bor.12433
language
English
LU publication?
yes
id
6885051f-d839-4524-985d-5bccd356989a
date added to LUP
2019-12-19 14:03:32
date last changed
2021-04-16 11:09:33
@article{6885051f-d839-4524-985d-5bccd356989a,
  abstract     = {Recent studies have revealed that areas with sediments pre-dating the Last Glacial Maximum (LGM) are more common in southern Scandinavia than previously thought. To describe and date these sediments, four deep core drillings were made in the province of Småland and one in the province of Skåne, southern Sweden, and an existing sediment core drilled in the 1960s from western Skåne was re-examined and re-dated, all resulting in a total of 22 AMS 14C ages and 19 OSL ages. With some variation, the Småland cores revealed a stratigraphy consisting of two tills separated by proglacial glaciofluvial and glaciolacustrine sediments, dated to between 46 and 25 ka BP (Marine Isotope Stage (MIS) 3 to 2). We suggest that these sediments were deposited during the ice retreat of the MIS 3 Ristinge glaciation over southern Scandinavia and the subsequent re-advance over the area in late MIS 3 and the transition to MIS 2, when the Fennoscandian Ice Sheet advanced towards its LGM marginal positions. This contrasts with the glacial history of southernmost Skåne, where an additional MIS 3 glacial advance through the Baltic Basin is suggested by the occurrence of a till named Allarp till. New ages from sediments under- and overlying this till suggest that it was deposited by the same Baltic ice advance that deposited the Klintholm till in Denmark (Klintholm Advance, c. 34-30 ka).},
  author       = {Möller, Per and Alexanderson, Helena and ANJAR, JOHANNA and Björck, Svante},
  issn         = {1502-3885},
  language     = {eng},
  month        = {07},
  number       = {3},
  pages        = {389--416},
  publisher    = {John Wiley and Sons},
  series       = {Boreas},
  title        = {MIS 3 sediment stratigraphy in southern Sweden sheds new light on the complex glacial history and dynamics across southern Scandinavia},
  url          = {http://dx.doi.org/10.1111/bor.12433},
  doi          = {10.1111/bor.12433},
  volume       = {49},
  year         = {2020},
}