Lower-Middle Ordovician δ ¹³C chemostratigraphy of western Baltica (Jämtland, Sweden)

Wu R, Calner M, Lehnert O, Petterfy O, Joachimski M (2015)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2015

Journal

Palaeoworld Elsevier BV

Publisher: Elsevier BV

Book Volume: 24

Pages Range: 110-122

DOI: 10.1016/j.palwor.2015.01.003

Abstract

The province of Jämtland, central Sweden, records a well-preserved but very thin suite of the Lower-Middle Ordovician cool-water carbonates. In this study we present the first carbon isotope profile for these strata on the basis of whole-rock samples from the Brunflo 2 core. The studied succession is 41.55m thick and includes, in ascending order, the Bjørkåsholmen Formation, Latorp Limestone, Tøyen Shale, and the Lanna, Holen, and Segerstad limestones. We identify two distinct positive δ¹³C excursions that can be used for intra- as well as inter-continental correlations. A positive excursion in the Tøyen Shale probably correlates to the mid-late Floian and the Oepikodus evae Zone in Baltica and Precordillera, and the Reutterodus andinus Zone in North America. A continuous increase in δ¹³C values through the upper Holen Limestone and the preserved part of the overlying Segerstad Limestone is interpreted as the rising limb of the Middle Darriwilian Isotope Carbon Excursion (MDICE), an important tie-point for the global correlation of the Jämtland strata. Negative δ¹³C values associated with the Latorp Limestone may correlate with similar low values in the late Tremadocian and early Floian of the Argentine Precordillera and the Shingle Pass and Ibex sections in North America.

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

Sweden (SE)

How to cite

APA:

Wu, R., Calner, M., Lehnert, O., Petterfy, O., & Joachimski, M. (2015). Lower-Middle Ordovician δ <sup>13</sup>C chemostratigraphy of western Baltica (Jämtland, Sweden). Palaeoworld, 24, 110-122. https://doi.org/10.1016/j.palwor.2015.01.003

MLA:

Wu, R., et al. "Lower-Middle Ordovician δ <sup>13</sup>C chemostratigraphy of western Baltica (Jämtland, Sweden)." Palaeoworld 24 (2015): 110-122.