Preprints
https://doi.org/10.5194/gi-2021-13
https://doi.org/10.5194/gi-2021-13

  12 Jul 2021

12 Jul 2021

Review status: this preprint is currently under review for the journal GI.

Assessment of the influence of astronomical cyclicity on sedimentation processes in Eastern Paratethys based on paleomagnetic measurements using Discrete Mathematical Analysis

Boris Dzeboev1,2, Anastasia Odintsova1,3, and Alena Rybkina1,3 Boris Dzeboev et al.
  • 1Geophysical Center of the Russian Academy of Sciences (GC RAS), Moscow 119296, Russia
  • 2Geophysical Institute - the Affiliate of Vladikavkaz Scientific Centre of the Russian Academy of Sciences (VSC RAS), Vladikavkaz 362002, Russia
  • 3Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences (IPE RAS), Moscow 123995, Russia

Abstract. The main objective of this study is to apply Discrete Mathematical Analysis (DMA) to the development of the methodology of cyclostratigraphy. This aim is supported by exploring the magnetic properties of rocks, the lithology of sediments and obtained geochronological reference definitions. The analysis was based on measurements of the variability of the magnetic susceptibility of rocks, which reflects climate variations. Astronomical cycles are global; this makes it possible to carry out a correlation analysis over a large area and on different facial types of sediments, considering their lithology and other sedimentary features. The introduction of modern methods of mathematical processing of geological data is one of the prospective areas for investigation and development in geoscience. Astronomical cycles can be revealed from measurements of scalar magnetic parameters of rocks (magnetic susceptibility as presented by the authors). Specific software developed by the authors allows the processing of measurement data and assessment of the presence of stable oscillation cycles based on the obtained measurement base. The present study attempts to apply mathematical methods to magnetic data using the existing PAST program, which allows spectral analysis of primary data with the construction of Lomb-Scargle and REDFIT periodograms. We interpret the spectral analysis data based on paleomagnetic determinations, considering the available dates for the boundaries of direct and reverse polarity chrons on a general stratigraphic scale.

Boris Dzeboev et al.

Status: open (until 25 Aug 2021)

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  • RC1: 'Comment on gi-2021-13', Anonymous Referee #1, 20 Jul 2021 reply

Boris Dzeboev et al.

Boris Dzeboev et al.

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Short summary
DMA-based algorithm developed by the authors allows us to solve the main tasks of cyclostratigraphy: periodograms were constructed with further identification of repetitive cycles for carrying out geological reconstructions and correlations of sediments of the same age over a large area.