Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 103-126 |
| Seitenumfang | 24 |
| Fachzeitschrift | BOREAS |
| Jahrgang | 44 |
| Ausgabenummer | 1 |
| Publikationsstatus | Veröffentlicht - 1 Jan. 2015 |
Abstract
The exact number, extent and chronology of the Middle Pleistocene Elsterian and Saalian glaciations in northern Central Europe are still controversial. This study presents new luminescence data from Middle Pleistocene ice-marginal deposits in northern Germany, giving evidence for repeated glaciations during the Middle Pleistocene (MIS 12 to MIS 6). The study area is located in the Leine valley south of the North German Lowlands. The data set includes digital elevation models, high-resolution shear wave seismic profiles, outcrop and borehole data integrated into a 3D subsurface model to reconstruct the bedrock relief surface. For numerical age determination, we performed luminescence dating on 12 ice-marginal and two fluvial samples. Luminescence ages of ice-marginal deposits point to at least two ice advances during MIS 12 and MIS 10 with ages ranging from 461±34 to 421±25ka and from 376±27 to 337±21ka. The bedrock relief model and different generations of striations indicate that the older ice advance came from the north and the younger one from the northeast. During rapid ice-margin retreat, subglacial overdeepenings were filled with glaciolacustrine deposits, partly rich in re-worked Tertiary lignite and amber. During MIS 8 and MIS 6, the study area may have been affected by two ice advances. Luminescence ages of glaciolacustrine delta deposits point to a deposition during MIS 8 or early MIS 6, and late MIS 6 (250±20 to 161±10ka). The maximum extent of both the Elsterian (MIS 12 and MIS 10) and Saalian glaciations (MIS 8? and MIS 6) approximately reached the same position in the Leine valley and was probably controlled by the formation of deep proglacial lakes in front of the ice sheets, preventing a further southward advance.
ASJC Scopus Sachgebiete
- Agrar- und Biowissenschaften (insg.)
- Ökologie, Evolution, Verhaltenswissenschaften und Systematik
- Geisteswissenschaftliche Fächer (insg.)
- Archäologie
- Erdkunde und Planetologie (insg.)
- Geologie
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in: BOREAS, Jahrgang 44, Nr. 1, 01.01.2015, S. 103-126.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Luminescence dating of ice-marginal deposits in northern Germany
T2 - Evidence for repeated glaciations during the Middle Pleistocene (MIS 12 to MIS 6)
AU - Roskosch, Julia
AU - Winsemann, Jutta
AU - Polom, Ulrich
AU - Brandes, Christian
AU - Tsukamoto, Sumiko
AU - Weitkamp, Axel
AU - Bartholomäus, Werner A.
AU - Henningsen, Dierk
AU - Frechen, Manfred
N1 - Publisher Copyright: © 2014 Collegium Boreas. Published by John Wiley & Sons Ltd.
PY - 2015/1/1
Y1 - 2015/1/1
N2 - The exact number, extent and chronology of the Middle Pleistocene Elsterian and Saalian glaciations in northern Central Europe are still controversial. This study presents new luminescence data from Middle Pleistocene ice-marginal deposits in northern Germany, giving evidence for repeated glaciations during the Middle Pleistocene (MIS 12 to MIS 6). The study area is located in the Leine valley south of the North German Lowlands. The data set includes digital elevation models, high-resolution shear wave seismic profiles, outcrop and borehole data integrated into a 3D subsurface model to reconstruct the bedrock relief surface. For numerical age determination, we performed luminescence dating on 12 ice-marginal and two fluvial samples. Luminescence ages of ice-marginal deposits point to at least two ice advances during MIS 12 and MIS 10 with ages ranging from 461±34 to 421±25ka and from 376±27 to 337±21ka. The bedrock relief model and different generations of striations indicate that the older ice advance came from the north and the younger one from the northeast. During rapid ice-margin retreat, subglacial overdeepenings were filled with glaciolacustrine deposits, partly rich in re-worked Tertiary lignite and amber. During MIS 8 and MIS 6, the study area may have been affected by two ice advances. Luminescence ages of glaciolacustrine delta deposits point to a deposition during MIS 8 or early MIS 6, and late MIS 6 (250±20 to 161±10ka). The maximum extent of both the Elsterian (MIS 12 and MIS 10) and Saalian glaciations (MIS 8? and MIS 6) approximately reached the same position in the Leine valley and was probably controlled by the formation of deep proglacial lakes in front of the ice sheets, preventing a further southward advance.
AB - The exact number, extent and chronology of the Middle Pleistocene Elsterian and Saalian glaciations in northern Central Europe are still controversial. This study presents new luminescence data from Middle Pleistocene ice-marginal deposits in northern Germany, giving evidence for repeated glaciations during the Middle Pleistocene (MIS 12 to MIS 6). The study area is located in the Leine valley south of the North German Lowlands. The data set includes digital elevation models, high-resolution shear wave seismic profiles, outcrop and borehole data integrated into a 3D subsurface model to reconstruct the bedrock relief surface. For numerical age determination, we performed luminescence dating on 12 ice-marginal and two fluvial samples. Luminescence ages of ice-marginal deposits point to at least two ice advances during MIS 12 and MIS 10 with ages ranging from 461±34 to 421±25ka and from 376±27 to 337±21ka. The bedrock relief model and different generations of striations indicate that the older ice advance came from the north and the younger one from the northeast. During rapid ice-margin retreat, subglacial overdeepenings were filled with glaciolacustrine deposits, partly rich in re-worked Tertiary lignite and amber. During MIS 8 and MIS 6, the study area may have been affected by two ice advances. Luminescence ages of glaciolacustrine delta deposits point to a deposition during MIS 8 or early MIS 6, and late MIS 6 (250±20 to 161±10ka). The maximum extent of both the Elsterian (MIS 12 and MIS 10) and Saalian glaciations (MIS 8? and MIS 6) approximately reached the same position in the Leine valley and was probably controlled by the formation of deep proglacial lakes in front of the ice sheets, preventing a further southward advance.
UR - http://www.scopus.com/inward/record.url?scp=84920197388&partnerID=8YFLogxK
U2 - 10.1111/bor.12083
DO - 10.1111/bor.12083
M3 - Article
AN - SCOPUS:84920197388
VL - 44
SP - 103
EP - 126
JO - BOREAS
JF - BOREAS
SN - 0300-9483
IS - 1
ER -