Multiple varve chronologies for the last 2000 years from the sediments of Lake Żabińskie (northeastern Poland) – Comparison of strategies for varve counting and uncertainty estimations

Żarczyński, Maurycy; Tylmann, Wojciech; Goslar, Tomasz

doi:10.1016/j.quageo.2018.06.001

Cited by 31 publications

(24 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Exploiting the full potential of varved records requires dating to the exact year, which is potentially provided through layer counting. In reality, however, invisible, blurred, or duplicate layers cause dating errors [9]. Furthermore, many varve records include poorly or non-varved sections, hence creating floating varve sections.…”

Section: Synchronization and Dating Of Varved Sedimentsmentioning

confidence: 99%

“…As a result, the presence of poorly visible, missing or wrong varves is much higher than similar problems in wood. Hence, errors in varve counting may approach 5% even in well-preserved laminations [9], and higher errors are to be expected with poor varve preservation. Validation with parallel cores from the same site may reduce errors but is rarely applied because of the high work load [9].…”

Section: Introductionmentioning

confidence: 99%

“…Hence, errors in varve counting may approach 5% even in well-preserved laminations [9], and higher errors are to be expected with poor varve preservation. Validation with parallel cores from the same site may reduce errors but is rarely applied because of the high work load [9]. Cross-dating between sites is hampered because varve thickness (or other varve parameters), unlike tree-ring width, does not show regionally synchronous variations.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Using Annual Resolution Pollen Analysis to Synchronize Varve and Tree-Ring Records

et al. 2019

View full text Add to dashboard Cite

Fossil wood and varved lake sediments allow proxy analysis with exceptionally high, (sub-)annual resolution. Both archives provide dating through ring and layer counting, yet with different accuracy. In wood, counting errors are small and can be eliminated through cross-dating because tree-rings show regionally synchronous patterns. In varved sediments, counting errors are larger and cross-dating is hampered by missing regional patterns in varve parameters. Here, we test whether annual pollen analysis is suited to synchronize varve records. To that end, annual pollen deposition was estimated in three short cores from two lakes in north-eastern Germany for the period 1980–2017 CE. Analysis has focused on Fagus sylvatica and Picea abies, which show the strongest annual variations in flowering (mast). For both tree taxa, annual flowering variations recorded by forest and pollen monitoring are well represented in varved lake sediments, hence indeed allow us to synchronize the records. Some pollen mast events were not recognized, which may relate to sampling uncertainties, redeposition or regional variations in flowering. In Fagus sylvatica, intense flowering limits wood growth in the same year. Peaks in pollen deposition hence correlate with minima in tree-ring width, which provides a link between varved lake sediments and fossil wood.

show abstract

Section: Synchronization and Dating Of Varved Sedimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Using Annual Resolution Pollen Analysis to Synchronize Varve and Tree-Ring Records

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The lake basin has a simple morphology with one, centrally located deepest point of 44 m ( Figure 1B). Strong seasonal thermal stratification and anoxia in the hypolimnion [4] lead to the formation and preservation of varved lake sediments [31,32].…”

Section: Study Areamentioning

confidence: 99%

“…The chronology is based on three individual varve counts and covers 2028 +34 / -53 varve years, reaching year 17 +34 / -53 BCE at a depth of 5.95 m. Additional age control of this period was achieved with 29 AMS 14 C dates, 137 Cs chronostratigraphic horizons, and the Askja cryptotephra of 1875 CE [33]. Details on the chronology are published byŻarczyński et al [32]. Based on varve chronology, the mass accumulation rate (MAR in g × cm −2 × year −1 ) was calculated by multiplying varve thickness (VT in mm) by dry bulk density (DBD in g × cm -3 ).…”

Section: Chronology and Sedimentological Variablesmentioning

confidence: 99%

Grain-Size Distribution and Structural Characteristics of Varved Sediments from Lake Żabińskie (Northeastern Poland)

2019

Self Cite

View full text Add to dashboard Cite

Typically, the description of varve microfacies is based on microscopic sedimentary structures, while standard grain-size analysis is commonly applied with lower resolution. Studies involving a direct comparison of varve microfacies and particle-size distributions, common for clastic environments, are scarce for biogenic varves. In this study, we analyzed nine-year resolution grain-size data from Lake Żabińskie (northeastern Poland) to detect differences between varve microfacies. Six varve microfacies were differentiated using grain-size distributions and sedimentological attributes (calcite layer thickness, dark layer thickness, mass accumulation rate). However, changes in particle-size distributions between different varve types are relatively small and indicate a similar source for the material deposited. Decomposition of grain-size distributions with the end-member approach allows recognition of relative changes for the deposition of allochthonous (mineral) and autochthonous (carbonates, (hydr)oxides) components. Grain-size data suggest that sources of allochthonous material remained constant, while varve formation was controlled mostly by in-lake processes.

show abstract

Detection of the historical Askja ad 1875 and modern Icelandic cryptotephras in varved lake sediments – results from a first systematic search in northern Poland

Kinder

Wulf

Appelt

2020

J Quaternary Science

View full text Add to dashboard Cite

Volcanic ash can disperse thousands of kilometres from the source volcano and provide valuable chronostratigraphic markers for palaeoclimate studies. We present new cryptotephra findings of historical and modern Icelandic eruptions in annually laminated lacustrine sediment records from several sites within a 570 km SW-NE transect across northern Poland. Sediments from the two lakes Wąsoskie and Szurpiły contain glass shards originating from the Plinian Askja AD 1875 eruption and showing bimodal, rhyolitic and dacitic affinities. A further cryptotephra finding in Lake Lubińskie suggests a potential origin from the Hekla AD 1845 eruption. These new findings extend the tephra dispersal map towards the southeast and provide valuable isochrons for the synchronisation of palaeoclimate proxy data at the termination of the Little Ice Age in central eastern Europe. Very low glass concentrations of modern cryptotephra in Lake Wąsoskie were potentially correlated with the Eyjafjallajökull AD 2010 eruption. Further findings in the uppermost sediments of lakes Szurpiły and Żabińskie in northeastern Poland tentatively suggest other sources from either the Hekla and/or Kamchatkan volcanoes.

show abstract

Multiple varve chronologies for the last 2000 years from the sediments of Lake Żabińskie (northeastern Poland) – Comparison of strategies for varve counting and uncertainty estimations

Cited by 31 publications

References 49 publications

Using Annual Resolution Pollen Analysis to Synchronize Varve and Tree-Ring Records

Using Annual Resolution Pollen Analysis to Synchronize Varve and Tree-Ring Records

Grain-Size Distribution and Structural Characteristics of Varved Sediments from Lake Żabińskie (Northeastern Poland)

Detection of the historical Askja ad 1875 and modern Icelandic cryptotephras in varved lake sediments – results from a first systematic search in northern Poland

Contact Info

Product

Resources

About