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Oxygen and carbon stable isotope records of the Lochkovian-Pragian boundary interval from the Prague Basin (Lower Devonian, Czech Republic)

Weinerová H, Bábek O, Slavík L, Vonhof H, Joachimski M, Hladil J (2020)

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Publication Type: Journal article

Publication year: 2020

Journal

Book Volume: 560

Article Number: 110036

DOI: 10.1016/j.palaeo.2020.110036

Abstract

Climate changes close to the Lochkovian-Pragian Event are still widely discussed. Carbonate δ¹⁸O and δ¹³C and conodont apatite δ¹⁸O from medial to distal carbonate ramp sediments were analysed to provide further stable isotope data from the stratotype area in the Prague Basin. The uppermost Silurian to lower Emsian δ¹⁸O trends are put into an updated conodont biostratigraphy framework. Carbonate δ¹⁸O and δ¹³C are discussed in the context of facies-dependent diagenesis. The δ¹³C pattern measured from different sections enables the correlation of intervals with development of different facies inside the Prague Basin. Positive δ¹³C shifts are often coupled with trends of decreasing computed gamma-ray (CGR) values interpreted as regressions, whereas negative δ¹³C shifts commonly coincide with opposite trends in CGR. The Lochkovian-Pragian boundary interval coincided with an increase in carbonate δ¹³C and an increase in the δ¹⁸O of conodont apatite and carbonate, which we interpret as consequence of climate cooling. Generally, the Lochkovian was warmer than the Pragian and earliest Emsian.

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APA:

Weinerová, H., Bábek, O., Slavík, L., Vonhof, H., Joachimski, M., & Hladil, J. (2020). Oxygen and carbon stable isotope records of the Lochkovian-Pragian boundary interval from the Prague Basin (Lower Devonian, Czech Republic). Palaeogeography, Palaeoclimatology, Palaeoecology, 560. https://doi.org/10.1016/j.palaeo.2020.110036

MLA:

Weinerová, Hedvika, et al. "Oxygen and carbon stable isotope records of the Lochkovian-Pragian boundary interval from the Prague Basin (Lower Devonian, Czech Republic)." Palaeogeography, Palaeoclimatology, Palaeoecology 560 (2020).

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