Rudists as gregarious sediment-dwellers, not reef-builders, on Cretaceous carbonate platforms

Gili, Eulàlia; Massé, Jean-Pierre; Skelton, Peter W.

doi:10.1016/0031-0182(95)00006-x

Cited by 211 publications

(125 citation statements)

References 40 publications

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“…Cementation occurs sporadically among the Heterodonta, but is most spectacularly developed in the extinct Hippuritida (the rudistids), whose often massive, coiled shells formed large bioherms in Tethyan carbonate sequences (e.g., SkElton, 1978;gili, MaSSE, & SkElton, 1995). Among anomalodesmatan bivalves, two small families, the Cleidothaeridae and Myochamidae, both centered around Australasia, have cemented taxa.…”

Section: Taxonomic Occurrencementioning

confidence: 99%

“…Many cementers are highly gregarious, e.g., oysters (galtSoff, 1964;Southworth & others, 2010), rudists (SkElton, 1979;gili, MaSSE, & SkElton, 1995), lithiotids (nauSS & SMith, 1988;fraSEr, bottjEr, & fiSchEr, 2004), and Etheria laMarck, 1807(kat, 1987, forming bioherms on open surfaces. Such aggregations may considerably influence local sedimentation rates and patterns and form complex habitat systems.…”

Section: Introductionmentioning

confidence: 99%

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Treatise Online no. 45: Part N, Revised, Volume 1, Chapter 21: Cementing Bivalvia

Harper¹

2012

TREON

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Section: Taxonomic Occurrencementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Treatise Online no. 45: Part N, Revised, Volume 1, Chapter 21: Cementing Bivalvia

Harper¹

2012

TREON

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“…The presence of oncoids, intensive burrowing, perforations and micritization suggest lower sedimentary rates. The fragmentation of rudists is probably the result of intensive in-situ bioerosion (Gili 1992;Gili et al 1995) or of periodic reworking by highenergy episodes.…”

Section: Paleoenvironmental Reconstruction and Evolutionmentioning

confidence: 99%

“…At certain intervals, rudists took part to the colonization of the substrate building-up a typical Urgonian-type facies (Masse 1979(Masse , 1995Gili et al 1995) (Fig. 7.1,2).…”

Section: Mft 4: Packstone-grainstone With Rudists and Wackestone/ Pacmentioning

confidence: 99%

An Upper Jurassic-Lower Cretaceous carbonate platform from the Vâlcan Mountains (Southern Carpathians, Romania): paleoenvironmental interpretation

Michetiuc¹,

Catincuţ²,

Bucur³

2012

Geologica Carpathica

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Abstract:The results of a biostratigraphic and sedimentological study of the Upper Jurassic-Lower Cretaceous limestones cropping out in the southern sector of the Vâlcan Mountains in Romania are presented, including the definition of microfacies types, fossil assemblages and environmental interpretation. Six microfacies types (MFT 1-MFT 6) have been identified, each of them pointing to a specific depositional environment. The deposits are characteristic of a shallow carbonate platform. They contain normal marine or restricted marine facies deposited in low or high energy environments from the inner, middle and outer platform. The age attribution of these deposits (Late Jurassic to Berriasian-Valanginian-?Hauterivian, and Barremian) is based on foraminiferal and calcareous algae associations. The micropaleontological assemblage is exceptionally rich in the Vâlcan Mountains and brings new arguments for dating the Upper Jurassic-Lower Cretaceous limestones in this area.

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“…Al-Aasm & Veizer (1986) suggested that their outer shell layer originally consisted of diagenetically stable low Mg calcite and their large size results in well-resolved annual growth increments, which reflect seasonal variations in temperature and/or salinity (Steuber 1999, Steuber et al 2005. They inhabited tropical and subtropical environments (Ross & Skelton 1993) and are generally restricted to normal marine environments, though some groups are tolerant to salinity changes (Gili et al 1995).…”

mentioning

confidence: 99%

Carbon and oxygen stable isotopes of selected Cenomanian and Turonian rudists from Egypt and Czech Republic, and a note on changes in rudist diversity

El-Shazly¹,

Košťák²,

Kloučková³

et al. 2011

Bull. Geosci.

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The stable isotope record and diversity of Cenomanian and Turonian rudists were compared for areas located at low paleolatitudes (10°N -Northern Egypt; 5 samples; 13 analyses) and middle paleolatitudes (35°N -Czech Republic, Bohemian Cretaceous Basin, BCB; 4 samples; 7 analyses). The oxygen isotope data indicate that the δ 18 O value of seawater was not identical for both areas. Moreover, local variations in seawater δ 18 O in the range of at least ±1‰ are probable in the shallow water near-shore environment where the rudists lived. Supposing a value of -1‰ VSMOW for contemporaneous seawater, the paleotemperature can be calculated as being between 24.5 and 31.5°C for the Late Cenomanian and between 32.9 and 34.7°C for the Early Turonian in the BCB. The δ 18 O seawater value for the northern part of Egypt was probably slightly lower. Calculation using a seawater value of -1.5‰ VSMOW gives temperatures for the Egypt in the range of 31.0 to 38.8°C for the Late Cenomanian and 35.5 to 41.2°C for the Turonian. The sclerochronological isotope profiles within one shell show changes of the calcite δ 18 O value, probably reflecting seasonal changes, with the largest observed within-shell temperature shift corresponding to 8°C. The analyzed pilot sample set shows that the BCB and Egyptian rudists contain valuable paleoenvironmental information and that a detailed isotope study is needed. Rudist generic diversity of both areas was also compared. The Cenomanian and Turonian rudist assemblages from Egypt and the BCB show similar generic diversity, and also display a similar marked diversity decrease across the Cenomanian/Turonian boundary interval. It is important to note that both areas have similar diversity on the generic and partially species level during the Cenomanian and Turonian. •

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Rudists as gregarious sediment-dwellers, not reef-builders, on Cretaceous carbonate platforms

Cited by 211 publications

References 40 publications

Treatise Online no. 45: Part N, Revised, Volume 1, Chapter 21: Cementing Bivalvia

Treatise Online no. 45: Part N, Revised, Volume 1, Chapter 21: Cementing Bivalvia

An Upper Jurassic-Lower Cretaceous carbonate platform from the Vâlcan Mountains (Southern Carpathians, Romania): paleoenvironmental interpretation

Carbon and oxygen stable isotopes of selected Cenomanian and Turonian rudists from Egypt and Czech Republic, and a note on changes in rudist diversity

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