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The AAPG/Datapages Combined Publications Database

CSPG Special Publications

Abstract


Intl. Symposium of the Devonian system: Papers, Volume II, 1967
Pages 295-306
Reefs and Carbonates

Reef development in the Devonian of the eastern Rhenish Slate Mountains, Germany

Wolfgang Krebs

Abstract

The late Middle Devonian and early Late Devonian reefs in the eastern Rhenish Slate Mountains, the so-called “Massenkalk”, can be divided in (1) a bank-type (Schwelm facies), (2) a reef-type (Dorp facies), and (3) a cap-type (Iberg facies). Surrounding the reef, stagnant, anaerobic shale facies, the so-called “Flinz”-facies, occurs on the flat shelf of the Old-Red-Continent in two distinct paleogeographical positions: (1) in front of the reefs and (2) behind the reefs or bars. The bank-type reefs are restricted to the flat shelf area of the Old-Red-Continent. The reef- and the cap-type are predominantly isolated structures on the shelf (Bergisches Land, Sauerland) and in the open sea (Lahn-Dill area). In the eastern Rhenish Slate Mountains the reef-type probably forms atolls or table reef-like structures.


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