Articles | Volume 12, issue 9
Research article
02 Sep 2016
Research article |  | 02 Sep 2016

Testing the impact of stratigraphic uncertainty on spectral analyses of sedimentary series

Mathieu Martinez, Sergey Kotov, David De Vleeschouwer, Damien Pas, and Heiko Pälike

Data sets

Magnetic susceptibility dataset from the early Givetian to early Frasnian in the La Thure section D., De Vleeschouwer, F., Boulvain, A.-C., Da Silva, D., Pas, C., Labaye, P., Claeys

Astrochronology of the Valanginian Stage from reference sections (Vocontian Basin, France) and palaeoenvironmental implications for the Weissert Event M., Martinez, J.-F., Deconinck, P., Pellenard, L., Riquier, S., Reboulet

Short summary
Identification of Milankovitch cycles within the sedimentary record depends on spectral analyses, but these can be biased because there are always slight uncertainties in the sample position within a sedimentary column. Here, we simulate uncertainties in the sample position and show that a tight control on the inter-sample distance together with a density of 6–12 samples per precession cycle are needed to accurately reconstruct the contribution of the orbital forcing on past climate changes.