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  • 1
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    PANGAEA
    In:  Supplement to: Wüthrich, Lorenz; Brändli, Claudio; Braucher, Régis; Veit, Heinz; Haghipour, Negar; Terrizzano, Carla; Christl, Marcus; Gnägi, Christian; Zech, Roland (2017): 10Be depth profiles in glacial sediments on the Swiss Plateau: deposition age, denudation and (pseudo-) inheritance. E&G - Eiszeitalter und Gegenwart - Quaternary Science Journal, 66(2), 57-68, https://doi.org/10.5194/egqsj-66-57-2017
    Publication Date: 2023-02-07
    Description: During the Pleistocene, glaciers advanced repeatedly from the Alps onto the Swiss Plateau. Numeric age control for the last glaciation is good and thus the area is well suited to test a method which has so far not been applied to till in Switzerland. In this study, we apply in situ produced cosmogenic 10Be depth profile dating to several till deposits. Three sites lie inside the assumed Last Glacial Maximum (LGM) extent of the Rhône and Aare glaciers (Bern, Deisswil, Steinhof) and two lie outside (Niederbuchsiten, St. Urban). All sites are strongly affected by denudation, and all sites have reached steady state, i.e., the 10Be production is in equilibrium with radioactive decay and denudational losses. Deposition ages can therefore not be well constrained. Assuming constant denudation rates of 5 cm/kyr, total denudation on the order of 100 cm for sites within the extent of the LGM and up to tens of meters for older moraines are calculated. Denudation events, for example related to periglacial conditions during the LGM, mitigate the need to invoke such massive denudation and could help to explain high 10Be concentrations at great depths, which we here dub "pseudo-inheritance". This term should be used to distinguish conceptionally from "true inheritance", i.e., high concentrations derived from the catchment.
    Keywords: Beryllium-10; Beryllium-10, production rate per year; Beryllium-10, standard deviation; Beryllium-10/Beryllium-9; Beryllium-10/Beryllium-9, standard deviation; Carrier; Deisswil; DEPTH, sediment/rock; Elevation of event; Event label; Gurten; Latitude of event; Longitude of event; Mass per area; Niederbuchsiten; Quartz, dissolved; ROCK; Rock sample; Sample code/label; St_Urban; Steinhof; Switzerland
    Type: Dataset
    Format: text/tab-separated-values, 181 data points
    Location Call Number Limitation Availability
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  • 2
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    PANGAEA
    In:  Supplement to: Wüthrich, Lorenz; Bliedtner, Marcel; Schäfer, Imke Kathrin; Zech, Jana; Shajari, Fatemeh; Gaar, Dorian; Preusser, Frank; Salazar, Gary; Szidat, Sönke; Zech, Roland (2017): Late Quaternary climate and environmental reconstruction based on leaf wax analyses in the loess sequence of Möhlin, Switzerland. E&G - Eiszeitalter und Gegenwart - Quaternary Science Journal, 66(2), 91-100, https://doi.org/10.5194/egqsj-66-91-2017
    Publication Date: 2023-07-29
    Description: We have measured leaf wax n-Alkanes from a Loess Paleosol Sequence (location: 47.56819 / 7.88053) ranging back to MIS 4. The data set contains n-Alkane patterns, Deuterium and Radiocarbon. We also present some calculations, derived from the Patterns: Average chain length gives a hint whether trees/shrubs or grasses were the dominant vegetation. The higher the value, the higher the contribution of grasses. ACL=(27 x nC_27+29 x nC_29+31 x nC_31+33 x nC_33)/(nC_27+nC_29+nC_31+nC_33 ) OEP is a marker for degradation. The higher the values, the less degraded are the n-alkanes. OEP=(nC_27+nC_29+nC_31+nC_33)/(nC_26+nC_28+nC_30+nC_32 ) For more information, further calculations and discussion see the related manuscript.
    Keywords: Age, dated, range, maximum; Age, dated, range, minimum; Carbon mass; Fraction modern carbon; Fraction modern carbon, standard deviation; Laboratory code/label; Moehlin; n-Alkane, average chain length; n-Alkane, total per unit sediment mass; n-Alkane C25, per unit sediment mass; n-Alkane C26, per unit sediment mass; n-Alkane C27, per unit sediment mass; n-Alkane C28, per unit sediment mass; n-Alkane C29, per unit sediment mass; n-Alkane C29, standard deviation; n-Alkane C29, δD; n-Alkane C30, per unit sediment mass; n-Alkane C31, per unit sediment mass; n-Alkane C31, standard deviation; n-Alkane C31, δD; n-Alkane C32, per unit sediment mass; n-Alkane C33, per unit sediment mass; n-Alkane C34, per unit sediment mass; n-Alkane C35, per unit sediment mass; Odd-even predominance index; Sample code/label; Sample mass; SOIL; Soil profile; Switzerland
    Type: Dataset
    Format: text/tab-separated-values, 673 data points
    Location Call Number Limitation Availability
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