The abandoned quarry south-west of Källa church on Northern Öland is the type locality of the Källa Limestone. The quarry provides access to a section of about one meter which has been collected for acritarchs and conodonts. The succession at Källa is composed of fossiliferous green to grey argillaceous limestone (wackestone) interbedded with green shaly marls. Acritarchs are abundant and well preserved. The microflora is diverse but dominated by Baltisphaeridium and Ordovicidium. Even though most of the identified taxa are long-ranging and are known from different palaeogeographic areas, the association is peculiar and has not been reported before. The conodont fauna recovered from the same samples is typical for Baltoscandia and indicates the B. robustus Subzone of the Pygodus serra Zone (Bergström 1971) (Darriwilian). Therefore the acritarch association can be precisely assigned to Dw3.

Darriwilian acritarchs and conodonts from the Källa Limestone, Öland, Sweden

BAGNOLI, GABRIELLA;
2013

Abstract

The abandoned quarry south-west of Källa church on Northern Öland is the type locality of the Källa Limestone. The quarry provides access to a section of about one meter which has been collected for acritarchs and conodonts. The succession at Källa is composed of fossiliferous green to grey argillaceous limestone (wackestone) interbedded with green shaly marls. Acritarchs are abundant and well preserved. The microflora is diverse but dominated by Baltisphaeridium and Ordovicidium. Even though most of the identified taxa are long-ranging and are known from different palaeogeographic areas, the association is peculiar and has not been reported before. The conodont fauna recovered from the same samples is typical for Baltoscandia and indicates the B. robustus Subzone of the Pygodus serra Zone (Bergström 1971) (Darriwilian). Therefore the acritarch association can be precisely assigned to Dw3.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/224734
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