Decoding Deep-Time Rhythms: Probing the Limit of Stratigraphic Correlation in the Time-Specific Facies of the Late Devonian Usseln Limestone (Rhenish Massif, Germany)
- Autor(en)
- Nina Wicher, Or Bialik, Theresa Nohl, R. Thomas Becker, David De Vleeschouwer
- Abstrakt
The iso- or diachronous character of a geologic unit is scale-dependent, especially for time-specific facies. The Usseln Limestone is a Late Devonian time-specific facies from Germany, occurring immediately below the Lower Kellwasser black shale. Here, we investigate whether cm-scale rhythmical bands within the Usseln Limestone are correlatable across its depositional basin. Its facies were studied at three locations ca. 50 km apart, representing different depositional settings. Its cm-scale alternations in lithological facies and elemental content (μXRF) form an excellent target for correlations on millennial timescales. Correlation attempts failed to converge to a solution at the cm-scale of individual rhythmites. Dynamic Time Warping, however, provided convincing correlations at the dm-scale, supporting its use as a high-resolution correlation tool. The Usseln Limestone base may be diachronous, but the top is likely isochronous. This finding is in agreement with sudden basin-wide black shale deposition at the onset of the Kellwasser Crisis.
- Organisation(en)
- Institut für Paläontologie
- Externe Organisation(en)
- Universität Münster, Universität Bremen, Vrije Universiteit Brussel
- Journal
- Geophysical Research Letters
- Band
- 51
- ISSN
- 0094-8276
- DOI
- https://doi.org/10.1029/2024GL109392
- Publikationsdatum
- 05-2024
- Peer-reviewed
- Ja
- ÖFOS 2012
- 105118 Paläontologie
- Schlagwörter
- ASJC Scopus Sachgebiete
- Geophysics, Allgemeine Erdkunde und Planetologie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/3a1fb7d8-60c8-4ba8-86ea-fc9abec79758