Multi-proxy reconstruction of Holocene paleoenvironments from a sediment core retrieved from the Wadden Sea near Norderney, East Frisia, Germany

Bulian, Francesca; Enters, Dirk; Schlütz, Frank; Scheder, Juliane; Blume, Katharina; Zolitschka, Bernd; Bittmann, Felix

doi:10.1016/j.ecss.2019.106251

Cited by 17 publications

(19 citation statements)

References 36 publications

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“…In addition, the organic matter absorbs Br and Cl due to their high affinity (Keppler & Biester, 2003;Leri & Myneni, 2012). This interpretation is supported by the corresponding results of TOC and Br analyses from an accompanying study (Bulian et al, 2019). Without conventional grain-size measurements, the usefulness of a common grain-size proxy, e.g.…”

Section: Discussionmentioning

confidence: 60%

“…Macroscopically and/or microscopically determined sediment structures and colours combined with basic physical, chemical and biological information, such as the hydrochloric acid (HCl) test for carbonates, and smear slides for identifying minerals and organisms (e.g. diatoms and foraminifers) are used to distinguish different sediment facies (Anderton, 1985;Flügel, 2010;Daidu et al, 2013;Bulian et al, 2019). This description is a qualitative measure relying on the experience of scientists.…”

Section: Introductionmentioning

confidence: 99%

“…Element ratios are often applied in these studies, such as the Ca/Sr and Zr/Al ratios, to characterise the sediment. Some studies integrate palaeontological analyses to discover more details with regard to climatic oscillations and depositional evolution (Dellwig et al, 1998(Dellwig et al, , 1999Freund et al, 2004;Schüttenhelm & Laban, 2005;Beck et al, 2011;Bulian et al, 2019). Since peats play an essential role in this coastal region, some studies focus on its formation's chemical and biological processes (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Facies characterisation of sediments from the East Frisian Wadden Sea (Germany): new insights from down-core scanning techniques

Lee

Enters

Titschack

et al. 2021

Netherlands Journal of Geosciences

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Sediment facies provide fundamental information to interpret palaeoenvironments, climatic variation, archaeological aspects and natural resource potentials since they are summary products of depositional processes, environmental conditions and biological activities for a given time and location. The conventional method of facies discrimination relies on macroscopic and/or microscopic determination of sediment structures combined with basic physical, chemical and biological information. It is a qualitative measure, depending on observer-dependent sedimentological descriptions, which cannot be reanalysed readily by further studies. Quantitative laboratory measurements can overcome this disadvantage, but are in need of large sample numbers and/or high temporal resolution, and are time-, labour- and cost-intensive. In order to facilitate an observer-independent and efficient method of facies classification, our study evaluates the potential of combining four non-destructive down-core scanning techniques: magnetic susceptibility (MS), X-ray computed tomography (CT), X-ray fluorescence (XRF) and digital photography. These techniques were applied on selected sections of sediment cores recovered around the island of Norderney (East Frisian Wadden Sea, Germany). We process and integrate the acquired scanning measurements of XRF elemental intensities, represented by principal components, MS, CT density and lightness of eight sediment facies previously recognised by conventional facies analysis: moraine, eolian/fluvial, soil, peat, lagoonal, sand flat, channel fill and beach-foreshore. A novel type of density plot is introduced to visualise the digitised sediment information that allows an observer-independent differentiation of these facies types. Thus, the presented methodology provides the first step towards automated supervised facies classification with the potential to reproduce human assessments in a fully reproducible and quantitative manner.

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Section: Discussionmentioning

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Facies characterisation of sediments from the East Frisian Wadden Sea (Germany): new insights from down-core scanning techniques

Lee

Enters

Titschack

et al. 2021

Netherlands Journal of Geosciences

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“…The top of these deposits shows higher C/N ratios pointing to terrestrial conditions (Khan et al, 2015), but inconclusively as the counts of C and N are low (N77, chapter 4). The terrestrial origin is clear in VVC17, as decomposition of organic matter indicates the formation of a palaeosol on top of the aeolian and glaciofluvial sands (Bulian et al, 2019).…”

Section: Correlationmentioning

confidence: 99%

“…However, an influence of relocation of the dated material in N77 (Table 1) has to be considered. Since the salt-marsh deposits documented in the adjacent core VVC17 (Bulian et al, 2019) are of approximately the same age but are situated~2 m deeper than in N77, a correlation of both layers is difficult, supporting the assumption of relocation in N77.…”

Section: Correlationmentioning

confidence: 99%

Microfauna- and sedimentology-based facies analysis for palaeolandscape reconstruction in the back-barrier area of Norderney (NW Germany)

Elschner

Scheder

Bungenstock

et al. 2021

Netherlands Journal of Geosciences

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Palaeolandscape reconstructions at the German North Sea coast are essential for the understanding of coastal changes and dynamic landscape-forming processes. This study contributes to reconstructing Holocene coastal changes in the back-barrier area of the East Frisian island of Norderney and draws conclusions on the local palaeogeography. Five sediment cores were analysed in terms of sedimentology (grain-size distribution), geochemistry (TOC, TIC, N, C/N), microfauna (foraminifers and ostracods) and 13 radiocarbon dates. In order to identify driving environmental factors and support the facies interpretation, multivariate statistics (PCA) were carried out. Additional cores from the surrounding area (WASA Project and ‘Landesamt für Bergbau, Energie und Geologie’ (LBEG) Hannover) enabled correlation of the investigated cores over a transect of ~6 km, showing six depositional environments, which can be used for landscape reconstruction. Deposition starts with periglacial (aeolian and glaciofluvial) Pleistocene sediments, with subsequent pedogenesis followed by swamp conditions that develop into a salt marsh. The overlying tidal-flat sediments are partially cut by (fossil and recent) channel deposits. A hiatus at the base of the tidal-flat deposits that spans some 3000 years hints at their reworking caused by a combination of antrophogenic coastal protection measures and the impact of storms. Furthermore, based on the profile correlation and the age data, a widespread salt-marsh area with a minimum age of ~4000 cal BP is defined for the ‘Hohes Riff’ in the southwestern back-barrier of Norderney Island.

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The depositional record of the French Flemish Coastal plain since antiquity: Impacts of land reclamation in a tide‐dominated estuary

Ouchaou,

Reynaud,

Besse

et al. 2024

The Depositional Record

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The French Flemish Coastal Plain, which extends from Denmark to France, is characterised by a topography close to sea level and protected by a system of coastal dunes. Quaternary sediments, comprised of marine, estuarine and continental deposits, accumulated by infilling and then prograding above a network of incised valleys. This study focusses on the Holocene infill of the Denna palaeoestuary, south‐west to Dunkerque. Surface geophysics (electrical conductivity and ground‐penetrating radar) and vibrocore data are used to reconstruct the landscape evolution during the last stages of sedimentation. The conductivity map highlights the last network of tidal channels, ditches and dikes of the eastern side of the palaeoestuary. Over the upper 4 m of the infill, the ground‐penetrating radar profiles show two superimposed units. The bottom unit is composed of meandering channel bars and the top unit of flat strata intersected by sparse channels, mostly infilled in place. The sediment analysis of the vibrocores shows a predominantly sandy filling of marine to estuarine origin, evidenced by sponge spicules and a fauna of bivalves and foraminifera adapted to brackish settings. The uppermost deposit exhibits an oxidation profile which marks the groundwater zone transition. Clayey sediments are also present, infilling the uppermost channels and ditches dug during reclamation, in increasing proportions towards the axis of the estuarine palaeovalley. The tidal signature of sedimentary dynamics is evidenced by heterolithic facies in some channel fills and tidal rhythmites infilling scour depressions linked to dike breaching. The abrupt decrease in channel dynamics across the unit boundary, although sedimentation remained sandy in the upper unit, coincides with the development of embankment of the estuarine border and is tentatively interpreted as a result of reclamation.

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Multi-proxy reconstruction of Holocene paleoenvironments from a sediment core retrieved from the Wadden Sea near Norderney, East Frisia, Germany

Cited by 17 publications

References 36 publications

Facies characterisation of sediments from the East Frisian Wadden Sea (Germany): new insights from down-core scanning techniques

Facies characterisation of sediments from the East Frisian Wadden Sea (Germany): new insights from down-core scanning techniques

Microfauna- and sedimentology-based facies analysis for palaeolandscape reconstruction in the back-barrier area of Norderney (NW Germany)

The depositional record of the French Flemish Coastal plain since antiquity: Impacts of land reclamation in a tide‐dominated estuary

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