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  Detecting and quantifying palaeoseasonality in stalagmites using geochemical and modelling approaches

Baldini, J. U. L., Lechleitner, F. A., Breitenbach, S. F. M., van Hunen, J., Baldini, L. M., Wynn, P. M., Jamieson, R. A., Ridley, H. E., Baker, A. J., Walczak, I. W., Fohlmeister, J. (2021): Detecting and quantifying palaeoseasonality in stalagmites using geochemical and modelling approaches. - Quaternary Science Reviews, 254, 106784.
https://doi.org/10.1016/j.quascirev.2020.106784

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Baldini, James U. L.1, Autor
Lechleitner, Franziska A.1, Autor
Breitenbach, Sebastian F. M.1, Autor
van Hunen, Jeroen1, Autor
Baldini, Lisa M.1, Autor
Wynn, Peter M.1, Autor
Jamieson, Robert A.1, Autor
Ridley, Harriet E.1, Autor
Baker, Alexander J.1, Autor
Walczak, Izabela W.1, Autor
Fohlmeister, Jens2, Autor              
Affiliations:
1External Organizations, ou_persistent22              
24.3 Climate Dynamics and Landscape Evolution, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146046              

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 Zusammenfassung: Stalagmites are an extraordinarily powerful resource for the reconstruction of climatological palaeoseasonality. Here, we provide a review of different types of seasonality preserved by stalagmites and methods for extracting this information. A new drip classification scheme is introduced, which facilitates the identification of stalagmites fed by seasonally responsive drips and which highlights the wide variability in drip types feeding stalagmites. This hydrological variability, combined with seasonality in Earth atmospheric processes, meteoric precipitation, biological processes within the soil, and cave atmosphere composition means that every stalagmite retains a different and distinct (but correct) record of environmental conditions. Replication of a record is extremely useful but should not be expected unless comparing stalagmites affected by the same processes in the same proportion. A short overview of common microanalytical techniques is presented, and suggested best practice discussed. In addition to geochemical methods, a new modelling technique for extracting meteoric precipitation and temperature palaeoseasonality from stalagmite δ18O data is discussed and tested with both synthetic and real-world datasets. Finally, world maps of temperature, meteoric precipitation amount, and meteoric precipitation oxygen isotope ratio seasonality are presented and discussed, with an aim of helping to identify regions most sensitive to shifts in seasonality.

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 Datum: 2021
 Publikationsstatus: Final veröffentlicht
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 Identifikatoren: DOI: 10.1016/j.quascirev.2020.106784
GFZPOF: p4 T2 Ocean and Cryosphere
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Titel: Quaternary Science Reviews
Genre der Quelle: Zeitschrift, SCI, Scopus
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Seiten: - Band / Heft: 254 Artikelnummer: 106784 Start- / Endseite: - Identifikator: ISSN: 0277-3791
Publisher: Elsevier
CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals418