Fossilführung und Palökologie des lagunären Massenkalkes (Devon) im Sauerland (Rheinisches Schiefergebirge)

May, Andreas

doi:10.1007/bf02989491

Cited by 12 publications

(8 citation statements)

References 16 publications

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“…sp. shows a parallel to the occurrences of Cyathopaedium paucitabulatum (Schlüter, 1879) in the upper part of the Newberria Formation, lower Givetian of western Sauerland, Germany (May 2003). Lecompte, 1939.…”

Section: Rugose Coralsmentioning

confidence: 73%

The Odivelas Limestone: evidence for a Middle Devonian reef system in western Ossa-Morena Zone (Portugal)

Machado¹,

Hladil²,

Koptíková³

et al. 2009

Geologica Carpathica

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Abstract:The Odivelas Limestone constitutes one of the few records of Middle Devonian sedimentation in the western Ossa-Morena Zone. Although deformed and metamorphosed the limestones have an abundant fossil content which allows their positioning as late Eifelian/early Givetian in age and to relate the reef fauna with the typical Rhenish facies for the same time period. Magnetic susceptibility analysis was attempted and is in agreement with the biostratigraphy, but the limited extent of sections and the metamorphism precludes firm correlations. The field evidence, petrographic and geochemical analysis point to a close paleogeographical relation and dependence of the reef system on volcanic structures which are included in the Beja Igneous Complex. The age of part of the volcanic and sub-volcanic suite of this complex is thus constrained.

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Section: Rugose Coralsmentioning

confidence: 73%

The Odivelas Limestone: evidence for a Middle Devonian reef system in western Ossa-Morena Zone (Portugal)

Machado¹,

Hladil²,

Koptíková³

et al. 2009

Geologica Carpathica

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“…angusta, Fig. 9b), and Caliapora are clear indicators of fully marine, stenohaline conditions (see May 1988). The tabulate corals Thamnopora, Scoliopora, and partially also Roemerolites were able to trap sediment due to their upright and ramose branching colonies ('medial growth strategy ' Scrutton 1998).…”

Section: Coralsmentioning

confidence: 97%

“…11c, h) and Amphipora. The latter are typical fossils of the Hagen-Balve Reef Complex, especially within the lagoonal and back-reef deposits of the Asbeck Member (May 1987(May , 1988Schudack 1993).…”

Section: Sponges (Including Stromatoporoids and Chaetetids)mentioning

confidence: 99%

“…Tabulate corals as well as stromatoporoids are common and diverse in the section and of more or less comparable importance as frame builders. This is remarkable, because in the younger, lagoonal Asbeck Member, stromatoporoids dominate clearly and tabulate corals account for only about 20% of the reef-builders (compare May 1988).…”

Section: Coralsmentioning

confidence: 99%

“…Numerous publications deal with the main reef (e.g. Jux 1960;May 1988May , 1991May , 1997Koch-Früchtl and Früchtl 1993;Schudack 1993;May and Marks 2013), not listing the many unpublished Diploma, mapping, and B.Sc. theses, and the eventual drowning and extinction in the Frasnian (e.g.…”

Section: Introductionmentioning

confidence: 99%

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The initial phase of the Hönne Valley Reef at Binolen (northern Rhenish Massif, Middle Devonian)

Löw

Söte

Becker

et al. 2022

Palaeobio Palaeoenv

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The Hagen-Balve Reef Complex of the northern Rhenish Massif, Germany, is one of the best examples for the globally widespread Givetian to Frasnian reefs. At its eastern end, in the Hönne Valley, it reaches up to 1000 metres in thickness. In general, there is limited knowledge concerning the faunas and palaeoecology of Rhenish initial reef phases. A unique section at Binolen exposes the sharp boundary between the underlying, siliciclastic Upper Honsel Formation and the lower part of the reefal Hagen-Balve Formation. A ca. 14 m thick succession is assigned to the new Binolen Member and investigated in terms of carbonate microfacies, micro-, and macrofaunas. Seven microfacies types (MF) characterise a crinoidal coral-stromatoporoid garden setting (MF-2 to MF-6) or allobiostrome of an initial open platform turning upsection into a coral parabiostrome (MF-7/8). The base of the Asbeck Member is locally defined by the appearance of back-reef facies types, such as fenestral limestones (MF-9), which indicate the transformation into a bioherm. Low-diversity conodont faunas prove an influx of open shelf organisms for the Binolen Member and suggest a lower Givetian age (probably Polygnathus timorensis Zone). There are two new Givetian conodont biofacies types characteristic for open biostrome settings, the Bipennatus Biofacies and a Simple Cone Biofacies. Thin sections reveal over 40 different reef builders (rugose and tabulate corals, stromatoporoids, and chaetetid sponges). Around 4200 microfossils from conodont residues consist of agglutinating foraminifers, calcareous sponge spicules (e.g. Heteractinida), scolecodonts, echinoderms (mostly crinoid ossicles and holothurian sclerites), pyritised benthic ostracods, assumed calcified moulds of chitinozoans, subordinate microvertebrates, and other groups. They were analysed quantitatively in order to document changing distribution patterns and environments through time. We distinguish six microfossil-based biofacies types (BF), namely the Ostracoda Biofacies (BF-O), Foraminifera Biofacies (BF-F), Scolecodont Biofacies (BF-S), Chitinozoa Biofacies (BF-C), Porifera-Scolecodont Biofacies (BF-PS), and Porifera-Echinodermata Biofacies (BF-PE). Microfacies and microfossil assemblages led to a reconstruction of the local facies development, consisting of seven successive depophases with further subdivisions. At the base, the sudden termination of siliciclastic influx enabled a proliferation of reef builders and microfaunas (Depophase I), followed by a longer deepening phase characterised by exclusive bioclastic wackestones (Depophase II). Depophase III is a short regressive phase with crinoidal coral-stromatoporoid floatstones. Depophase IV is characterised by fluctuations in facies and relative sea-level, which results in three subphases. Depophase V resembles Depophase III, but with argillaceous interbeds and more abundant scolecodonts. It is followed by an interval with coral-stromatoporoid rudstones, which grade into coral-dominated bafflestones of an (auto)parabiostrome (both Depophase VI). Depophase VII represent the back-reef facies, including fenestral pack-bindstones of the basal Asbeck Member. The systematic analysis of reefal microfaunas represents pioneer work that should be tested and expanded to other reefs of the Rhenish Massif and beyond.

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Microfacies controls on weathering of carbonate building stones: Devonian (northern Sauerland, Germany)

May

1994

Facies

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Fossilführung und Palökologie des lagunären Massenkalkes (Devon) im Sauerland (Rheinisches Schiefergebirge)

Cited by 12 publications

References 16 publications

The Odivelas Limestone: evidence for a Middle Devonian reef system in western Ossa-Morena Zone (Portugal)

The Odivelas Limestone: evidence for a Middle Devonian reef system in western Ossa-Morena Zone (Portugal)

The initial phase of the Hönne Valley Reef at Binolen (northern Rhenish Massif, Middle Devonian)

Microfacies controls on weathering of carbonate building stones: Devonian (northern Sauerland, Germany)

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