The role of microbes in reef-building communities of the Cannindah limestone (Mississippian), Monto region, Queensland, Australia

Shen, Jianwei; Webb, Gregory E.

doi:10.1007/s10347-007-0116-2

Cited by 18 publications

(7 citation statements)

References 39 publications

(36 reference statements)

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“…When discussing the diVerent taxonomic interpretations of Lithocodium found in the literature, the terms calcimicrobes and microbial carbonates (or microbialites) are used. For pragmatic reasons, these tiny Wlamentous-branching and tubiferous microorganisms (e.g., cyanobacteria) are here neutrally termed calcimicrobes (= microbes capable of triggering carbonate precipitation) (e.g., Riding 2000;Shen and Webb 2008) in a broader sense (e.g., Leinfelder et al 1993) as the taxonomic status of these forms is still insuYciently known. One previous concept of fossil calciWed cyanobacteria provided by Riding (1991a) included a variety of taxa of uncertain taxonomic status (microproblematica); some authors equate calcimicrobes with cyanobacteria, others also include problematic cyanophyta such as the porostromate algae (Shen and Qing 2008, "porostromate calcimicrobes").…”

Section: Terminologymentioning

confidence: 99%

Erratum to: New insights into Lithocodium aggregatum Elliott 1956 and Bacinella irregularis Radoičić 1959 (Late Jurassic–Lower Cretaceous): two ulvophycean green algae (?Order Ulotrichales) with a heteromorphic life cycle (epilithic/euendolithic)

Schlagintweit¹,

Bover‐Arnal

Salas

2010

Facies

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Section: Terminologymentioning

confidence: 99%

Erratum to: New insights into Lithocodium aggregatum Elliott 1956 and Bacinella irregularis Radoičić 1959 (Late Jurassic–Lower Cretaceous): two ulvophycean green algae (?Order Ulotrichales) with a heteromorphic life cycle (epilithic/euendolithic)

Schlagintweit¹,

Bover‐Arnal

Salas

2010

Facies

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“…Although Renalcis occurred again in a subsidiary role in the reefs of the British Isles (Adams, 1984; Somerville et al. , 1992) and Eastern Australia (Webb, 1989; Shen & Webb, 2005, 2008), it never again played the major constructional role that it had in the Frasnian and Famennian. Interestingly, Renalcis resurged at the same time as skeletal reef builders such as rugose corals in the Visean.…”

Section: Interpretation and Discussionmentioning

confidence: 99%

Microbial mounds prior to the Frasnian-Famennian mass extinctions, Hantang, Guilin, South China

Shen¹,

Webb²,

Qing³

2010

Sedimentology

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Late Frasnian mounds of the Yunghsien Formation, Guilin, South China, developed as part of the Guilin platform, mostly in reef‐flat and platform margin settings. Microbial mounds in platform margin settings at Hantang, about 10 km west of Guilin, contain Frasnian biota, such as Stachyodes and Kuangxiastraea and, thus, occur below the Frasnian‐Famennian mass extinction boundary. Platform margin facies were dominated by microbes, algae and receptaculitids. Massive corals and stromatoporoids are not common and rarely show reef‐building functions as they did in Givetian time. The margin mounds are composed of brachiopod‐receptaculitid cementstone, and a variety of boundstones that contain Rothpletzella, Renalcis, thrombolite and stromatolite. Other microbial communities include Girvanella, Izhella, Ortonella and Wetheredella. Solenoporoid algae are abundant locally. Zebra structures and neptunian dykes are well‐developed at some intervals. Pervasive early cementation played an important role in lithification of the microbial boundstones and rudstones. Frasnian reefs of many regions of the world were constructed by stromatoporoids and corals, although a shift to calcimicrobe‐dominated frameworks occurred before the Famennian. However, the exact ages of many Frasnian margin outcrops are poorly constrained owing to difficulties dating shallow carbonate facies. The Hantang mounds represent a microbe‐dominated reef‐building community with rare skeletal reef builders, consistent with major Late Devonian changes in reef composition, diversity and guild structure occurring before the end of the Frasnian. A similar transition occurred in the Canning Basin of Western Australia, but coeval successions in North America, Western Europe and the northern Urals are either less well‐known or represent different bathymetric settings. The transition in reef‐building style below the Frasnian‐Famennian boundary is documented here in the two best exposed successions on two continents, which may have been global. Set in the larger context of Late Devonian and Mississippian microbial reef‐building, the Hantang mounds help to demonstrate that controls on microbial reef communities differed from those on larger skeletal reef biota. Calcimicrobes replaced stromatoporoids as major reef builders before the Frasnian‐Famennian extinction event, and increasing stromatoporoid diversity towards the end of the Famennian did not result in a resurgence of skeletal reef frameworks. Calcimicrobes dominated margin facies through the Famennian, but declined near the Devonian‐Carboniferous boundary. Stromatolite and thrombolite facies, which occurred behind the mound margin at Hantang, rose to dominate Mississippian shallow‐water reef frameworks with only a minor resurgence of the important Frasnian calcimicrobe Renalcis in the Visean when well‐skeletonized organisms (corals) also became volumetrically significant frame builders again.

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“…Park City Fm., Wyoming (see Scholle and Ulmer-Scholle 2003, p. 328). Girvanella-like problematica also occur as thin, millimetric, and cryptic microbial crusts overgrown on corallites in the Syringopora interstices, which are similar to that of Girvanella layers encrusted fasciculate corallites in the Cannindah Limestone, eastern Australia (Shen and Webb 2008). Microbial crusts are supposed to be chiefly built by microbes, particularly cyanobacteria and other bacteria (Leinfelder et al 1993).…”

Section: Classification Of Calcimicrobes Environmental Significancementioning

confidence: 99%

Calcimicrobes and microbialites in lagoonal sediments from Mississippian Midale Beds, Williston Basin, southeastern Saskatchewan, Canada

Shen

Yang²,

Qing

et al. 2011

Int J Earth Sci (Geol Rundsch)

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The role of microbes in reef-building communities of the Cannindah limestone (Mississippian), Monto region, Queensland, Australia

Cited by 18 publications

References 39 publications

Erratum to: New insights into Lithocodium aggregatum Elliott 1956 and Bacinella irregularis Radoičić 1959 (Late Jurassic–Lower Cretaceous): two ulvophycean green algae (?Order Ulotrichales) with a heteromorphic life cycle (epilithic/euendolithic)

Erratum to: New insights into Lithocodium aggregatum Elliott 1956 and Bacinella irregularis Radoičić 1959 (Late Jurassic–Lower Cretaceous): two ulvophycean green algae (?Order Ulotrichales) with a heteromorphic life cycle (epilithic/euendolithic)

Microbial mounds prior to the Frasnian-Famennian mass extinctions, Hantang, Guilin, South China

Calcimicrobes and microbialites in lagoonal sediments from Mississippian Midale Beds, Williston Basin, southeastern Saskatchewan, Canada

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