Depositional environment and facies architecture of the Lower to Middle Ordovician carbonate ramp succession, Öland, southern Sweden
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The Lower to Middle Ordovician carbonates of Öland, southern Sweden, exhibit outcrops of up to 12 m thickness and rest conformably on Cambrian black shales of the Alum Formation. Based on lithological and sedimentological characteristics, nine carbonate facies were identified within the successions that are grouped into four facies associations (FAs). FA 1 is composed of glauconite- bearing mud- to wackestone facies. FA 2 consists of three glauconite- and one glauconite- and Fe-ooid bearing mud- to packestone carbonate facies. Deposits of FA 3 are carbonate mud- to wackestone facies. FA 4 is ...