DIETZE, Michael; KREUTZER, Sebastian; FUCHS, Margret C.; MESZNER, Sascha

doi:10.5194/gchron-4-323-2022

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DIETZE, Michael
German Research Centre for Geosciences - Helmholtz-Centre Potsdam [GFZ]
Georg-August-University of Göttingen = Georg-August-Universität Göttingen

KREUTZER, Sebastian
Archéosciences Bordeaux
Aberystwyth University

FUCHS, Margret C.
Helmholtz Institute Freiberg for Resource Technology [HIF]

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Article de revue

Ce document a été publié dans

Geochronology. 2022, vol. 4, n° 1, p. 323-338

Copernicus Publications

Résumé en anglais

Past environmental information is typically inferred from proxy data contained in accretionary sediments. The validity of proxy data and analysis workflows are usually assumed implicitly, with systematic tests and uncertainty estimates restricted to modern analogue studies or reduced-complexity case studies. However, a more generic and consistent approach to exploring the validity and variability of proxy functions would be to translate a sediment section into a model scenario: a “virtual twin”. Here, we introduce a conceptual framework and numerical tool set that allows the definition and analysis of synthetic sediment sections. The R package sandbox describes arbitrary stratigraphically consistent deposits by depth-dependent rules and grain-specific parameters, allowing full scalability and flexibility. Virtual samples can be taken, resulting in discrete grain mixtures with defined parameters. These samples can be virtually prepared and analysed, for example, to test hypotheses. We illustrate the concept of sandbox, explain how a sediment section can be mapped into the model and explore geochronological research questions related to the effects of sample geometry and grain-size-specific age inheritance. We summarise further application scenarios of the model framework, relevant for but not restricted to the broader geochronological community.< Réduire

Mots clés en anglais

Luminescence dating

Geochronology

Modelling

DOI

http://dx.doi.org/10.5194/gchron-4-323-2022

Projet Européen

CREDit - Chronological REference Datasets and Sites (CREDit) towards improved accuracy and precision in luminescence-based chronologies

Origine

Importé de hal

Unités de recherche

Archéosciences Bordeaux - UMR 6034