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The Brilon-reef complex is one of the biggest Devonian carbonate buildups (~80 km2) of the Rheinisches Schiefergebirge. The Burgberg section is located in the southeastern fore-reef area of the Brilon Reef Complex and exposes a succession of strata (117 m thick), which extends from the Middle Givetian (middle varcus conodont Zone) to the Viséan (bilineatus conodont Zone). Field and microfacies observations...
The Lower Devonian reefs of the Urals were formed in two different environmental settings: (1) the Novaya Zemlya-West-Uralian reefs were rigid organic structures that grew at a passive platform at the eastern margin of Baltica; (2) reefal limestones from the Eastern Urals developed in an island arc during a phase of volcanism. The reef belts can be traced for more than 2,500 km. The largest barrier...
Stenolaemate bryozoans with their stable calcitic skeletons play a significant role in reef building. In the Middle Devonian Sabkhat Lafayrina reef complex (Western Sahara), bryozoans are abundant and diverse. Although they do not form part of the principal framework of reefs, bryozoans are involved significantly in reef growth, especially in the initial stage. In this way, bryozoans are important...
Growth forms of well-preserved stromatoporoids, including genera Actinostroma, Stachyodes, and Stromatopora, are described for the first time from the Devonian Sabkhat Lafayrina reef complex of southern Morocco (west Sahara), one of the best exposed Middle-Devonian stromatoporoid-dominated fossil reefs. Three facies types representing the well illuminated fore-reef, reef-core and transition to back-reef...
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