Fossil Record 18(1): 57-72, doi: 10.5194/fr-18-57-2015
Facies, origin, and palaeontological inventory of an Early Carboniferous neptunian dyke in the Devonian reef limestone near Rösenbeck (Brilon Anticline, Rhenish Mountains)
expand article infoF. Heuer, D. Korn§, Z. Belka|, V. Hairapetian
‡ Fachbereich Geowissenschaften, Geotechnik und Bergbau, TU Bergakademie Freiberg, Bernhard-von-Cotta-Straße 2, 09599 Freiberg, Germany§ Museum für Naturkunde, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, Invalidenstraße 43, 10115 Berlin, Germany| AMU Isotope Laboratory, ul. Dziegielowa 27, 61-680 Poznan, Poland¶ Geology Department, Esfahan (Khorasgan) Branch, Islamic Azad University, P.O. Box 81595-158, Esfahan, Iran
Open Access
The Devonian reef limestone complex of Rösenbeck nearBrilon (Rhenish Mountains) shows numerous neptunian dykes and otherhollowswhich have been filled with Carboniferous siliciclastic as well asfossil-rich carbonate sediments with ammonoids, conodonts, and chondrichthyanfish. While the shales of the infill can be interpreted as autochthonoussediments, the carbonates represent erratic blocks of sediments which weredeposited in elevated areas but subsequently eroded and transported aserratic blocks into the karstic cavities. The biota of the carbonatesdemonstrates that two stratigraphic intervals are represented: (1) theTournaisian–Viséan boundary interval, which can be identified by thepresence of trilobites, and (2) the late Viséan (Asbian–Brigantian),proven by the presence of ammonoids and conodonts embedded in shales thatprobably have an early Serpukhovian age. Two carbonate facies can bedistinguished in the Late Viséan blocks: (1) low-energy micriticsediments with Goniatites crenistria, which are probablyequivalent to the crenistria Limestone and (2)high-energy (tempestite) sediments with numerous ammonoid specimens and in amore subordinate role other to fossil groups.