Miaolingian (Cambrian) trilobite biostratigraphy and carbon isotope chemostratigraphy in the Tingskullen drill core, Öland, Sweden

Ahlberg P, Lundberg F, Calner M, Lehnert O, Dahlqvist P, Joachimski M (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Estonian Journal of Earth Sciences Estonian Academy Publishers

Book Volume: 70

Pages Range: 18

Issue: 1

DOI: 10.3176/earth.2021.03

Abstract

The Cambrian succession of the Tingskullen drill core from northern Öland comprises Cambrian Series 2 and Miaolingian (Wuliuan Stage) siliciclastic strata. The major portion of the succession is represented by the Miaolingian Borgholm Formation, which, in ascending order, is subdivided into the Mossberga, Bårstad and Äleklinta members. The Äleklinta Member is barren of body fossils, whereas the Mossberga and Bårstad members are moderately to highly fossiliferous and biostratigraphically reasonably well constrained. Trilobites and agnostoids from the Bårstad Member are indicative of the Acadoparadoxides pinus Zone. The Mossberga Member has not yielded any zonal guide fossils but is tentatively assigned to the Eccaparadoxides insularis Zone. A δ13Corg curve throughout the Borgholm Formation shows a general positive trend up-section without any distinctive excursion, suggesting that the Wuliuan Acadoparadoxides (Baltoparadoxides) oelandicus Superzone (the ‘Oelandicus beds’) of Öland is younger than the negative Redlichiid–Olenellid Extinction Carbon isotope Excursion (ROECE), which is known from near the top of Stage 4 and close to the traditional ‘Lower–Middle Cambrian boundary’ in several parts of the world.

Authors with CRIS profile

Oliver Lehnert Lehrstuhl für Geologie (Exogene Dynamik) Michael Joachimski Lehrstuhl für Geologie (Exogene Dynamik)

Involved external institutions

Lund University / Lunds universitet SE Sweden (SE) Geological Survey of Sweden / Sveriges geologiska undersökning (SGU) SE Sweden (SE)

How to cite

APA:

Ahlberg, P., Lundberg, F., Calner, M., Lehnert, O., Dahlqvist, P., & Joachimski, M. (2021). Miaolingian (Cambrian) trilobite biostratigraphy and carbon isotope chemostratigraphy in the Tingskullen drill core, Öland, Sweden. Estonian Journal of Earth Sciences, 70, 18. https://dx.doi.org/10.3176/earth.2021.03

MLA:

Ahlberg, Per, et al. "Miaolingian (Cambrian) trilobite biostratigraphy and carbon isotope chemostratigraphy in the Tingskullen drill core, Öland, Sweden." Estonian Journal of Earth Sciences 70 (2021): 18.

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