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

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

doi:https://doi.org/10.5194/cp-12-1765-2016

Articles | Volume 12, issue 9

https://doi.org/10.5194/cp-12-1765-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/cp-12-1765-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

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

Supplement

https://doi.org/10.5194/cp-12-1765-2016-supplement

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 https://doi.org/10.1594/PANGAEA.855764

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 https://doi.org/10.1016/j.palaeo.2013.02.021

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.