Sequence analysis of early Saalian glacial lake deposits (NW Germany): evidence of local ice margin retreat and associated calving processes

Winsemann, Jutta; Asprion, Ulrich; Meyer, Thomas

doi:10.1016/j.sedgeo.2003.11.010

Cited by 37 publications

(39 citation statements)

References 32 publications

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“…To the east (e.g. Winsemann et al, 2004) and west (e.g. Gibbard, 1995) of the present-day North Sea, river valleys relatively close to the ice front were temporarily occupied by proglacial or ice-dammed lakes.…”

Section: Features From Glacial Timesmentioning

confidence: 99%

North Sea palaeogeographical reconstructions for the last 1 Ma

Cohen

Gibbard

Weerts

2014

Netherlands Journal of Geosciences

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The landscape evolution of the southern North Sea basin is complex and has left a geographically varying record of marine, lacustrine, fluvial and glacial sedimentation and erosion. Quaternary climatic history, which importantly included glaciation, combined with tectonics gave rise to cyclic and non-cyclic changes of sedimentation and erosion patterns. Large-scale landscape reorganisations left strong imprints in the preserved record, and are important for the detail that palaeogeographical reconstructions for the North Sea area can achieve. In the spirit of the North Sea Prehistory Sea. It summarises current stratigraphical and chronological frameworks and provides an overview of sedimentary environments. As we go back in time, the understanding of Quaternary palaeo-environmental evolution in the North Sea basin during the last 1 million years becomes decreasingly accurate, with degree of preservation and accuracy of age control equally important controls. Comparing palaeogeographical reconstructions for the Middle Pleistocene, the last interglacial-glacial cycle and the period following the Last Glacial Maximum illustrates this. More importantly, a series of palaeogeographical maps provide an account of basin-scale landscape change, which provides an overall framework for comparing landscape situations through time.

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Section: Features From Glacial Timesmentioning

confidence: 99%

North Sea palaeogeographical reconstructions for the last 1 Ma

Cohen

Gibbard

Weerts

2014

Netherlands Journal of Geosciences

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“…quasi-steady hyperpycnal turbidity currents following Mulder & Eurasian ice sheets, NW Russia Alexander (2001). A high sedimentation rate is also seen in the steeply climbing ripples and channel and bar forms typical of subaqueous fans (Martini 1990;Winsemann et al 2004). We interpret this subunit to have been deposited by a continuous supply of meltwater with high sediment loads to an ice-marginal basin.…”

Section: Unit 1 Marine Eemianmentioning

confidence: 84%

Eurasian ice‐sheet interaction in northwestern Russia throughout the late Quaternary

Kjær

Larsen

Funder

et al. 2006

Boreas

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Sediment successions from the Kanin Peninsula and Chyoshskaya Bay in northwestern Russia contain information on the marginal behaviour of all major ice sheets centred in Scandinavia, the Barents Sea and the Kara Sea during the Eemian ÁWeichselian. Extensive luminescence dating of regional lithostratigraphical units, supported by biostratigraphical evidence, identifies four major ice advances at 100 Á90, 70 Á65, 55 Á45 and 20 Á18 kyr ago interbedded with lacustrine, glaciolacustrine and marine sediments. The widespread occurrence of marine tidal sediments deposited c. 65 Á60 kyr ago allows a stratigraphical division of the Middle Weichselian Barents Sea and Kara Sea ice sheets into two shelf-based glaciations separated by almost complete deglaciation. The first ice dispersal centre was in the Barents Sea and thereafter in the Kara Sea. It is possible to extract both flow patterns from ice marginal landforms inside the southward termination. Accordingly, it is proposed that the Markhida line and its western continuation are asynchronous and originate from two separate glaciations before and after the marine transgression. The marine sedimentation occurred during a eustatic sea-level rise of up to 20 m/1000 yr, i.e. the Mezen Transgression. We speculate that the rapid eustatic sea-level rise triggered a collapse of the Barents Sea Ice Sheet at the MIS (Marine Isotope Stage) 4 to 3 transition. This is motivated by lack of an early marine highstand, the timing of events, and the marginal position of Arkhangelsk relative to open marine conditions.

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“…The blocking of the River Weser Valley by the Middle Pleistocene (Older Saalian) Scandinavian Ice Sheet led to the formation of glacial Lake Rinteln (e.g. Spethmann, 1908;Thome, 1983;Klostermann, 1992;Winsemann et al, 2004). Two ice-lobes advanced into the Weser Valley, blocking the east and northward drainage.…”

Section: Study Area and Previous Reseachmentioning

confidence: 99%

“…Skupin et al, 2003). The ice advance from the western lake margin successively closed lake outlets leading to an overall lake-level rise (Winsemann et al, 2004). These overspills are located at the southwestern lake margin, lie at altitudes between c. 89 -215 m a.s.l.…”

Section: Study Area and Previous Reseachmentioning

confidence: 99%

“…2) mainly deposited from highenergy meltwater flows (Winsemann et al, 2004;Hornung et al, 2007). Well logs and several clay pits record the widespread occurrence of up to 20 m thick fine-grained lake bottom sediments ('Hauptbeckenton'), overlying older Quaternary fluvial deposits of the River Weser or bedrocks in the basin centre (c. 55 -75 m a.s.l.).…”

Section: Study Area and Previous Reseachmentioning

confidence: 99%

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Lake‐Level Control on Ice‐Margin Subaqueous Fans, Glacial Lake Rinteln, Northwest Germany

Winsemann

Asprion

Meyer

2007

Glacial Sedimentary Processes and Products

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During the maximum advance of the Early Saalian Scandinavian Ice Sheet ice-dammed lakes developed within valleys of the Northwest German Mountain ranges. The blocking of the River Weser valley led to the formation of glacial Lake Rinteln where most of the sediment was deposited by meltwater. Two subaqueous fan complexes have been identified, which formed lakeward of retreating ice-lobes during an overall lake-level rise. The sediment transport on the fans has been dominated by sustained gravity-flows, mainly cohesionless debris flows or high-and low-density turbidity currents, reflecting discharge of semi-continuous meltwater flows. Intercalations of surge-type high-and lowdensity turbidites increase towards the mid-and lower-fan slopes, indicating more ice-distal and periodic deposition. Individual fan bodies commonly have a coarse-grained proximal core of steeply dipping gravel, overlain by gently to steeply dipping mid-to outer fan deposits. During glacier retreat commonly fine-grained sediments, rich in ice-rafted debris, were deposited on the ice-distal and ice-proximal slopes of the abandoned fans. Climbing-ripple cross-laminated sand may onlap coarse-grained upper fan gravel and in some cases overtop the older fan deposits. Phases of glacier still-stands are characterised by fan systems that display an upward flattening of fan clinoforms and minor vertical facies changes. The position of ice marginal fans was controlled by the combination of bedrock topography and water depth. At the eastern lake margin topographic highs served as pinning points for the retreating glacier and facilitated ice margin stabilisation. A strong lake-level fall probably triggered a major drainage event that tapped previously unconnected reservoirs of englacial and subglacial meltwater.

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Sequence analysis of early Saalian glacial lake deposits (NW Germany): evidence of local ice margin retreat and associated calving processes

Cited by 37 publications

References 32 publications

North Sea palaeogeographical reconstructions for the last 1 Ma

North Sea palaeogeographical reconstructions for the last 1 Ma

Eurasian ice‐sheet interaction in northwestern Russia throughout the late Quaternary

Lake‐Level Control on Ice‐Margin Subaqueous Fans, Glacial Lake Rinteln, Northwest Germany

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