Bohemian facies

geology

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June 22, 2026

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In geology, a facies refers to the physical, chemical, and biological characteristics of a sedimentary rock layer, and how these characteristics change laterally within rock layers of the same age. These characteristics are determined by the depositional environment where sediments accumulate.1

The term "Bohemian facies" specifically describes a type of Devonian rock succession found in the Prague Basin of eastern Europe. These deposits are characterized by calcareous (limestone-rich) sediments and are part of a continuous marine sequence that spans from the Silurian into the Devonian period. This facies is known for its reef deposits and is a significant geological feature in the region.2

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Devonian Period
Europe
…calcareous Lower Devonian succession, the Bohemian facies, occurs in the Prague Basin of eastern Europe. A continuous marine succession formed from the Silurian into the Devonian, and the boundary is drawn at the top of the Silurian Series with the crinoid genus Scyphocrinites. The overlying Lochkovian and Pragian formations include…
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…calcareous Lower Devonian succession, the Bohemian facies, occurs in the Prague Basin of eastern Europe. A continuous marine succession formed from the Silurian into the Devonian, and the boundary is drawn at the top of the Silurian Series with the crinoid genus Scyphocrinites. The overlying Lochkovian and Pragian formations include…
Read More