Bioerosional structures and pseudoborings from Late Jurassic and Late Cretaceous-Paleocene shallow-water carbonates (Northern Calcareous Alps, Austria and SE France) with special reference to cryptobiotic foraminifera

Schlagintweit, Félix

doi:10.1007/s10347-008-0137-5

Cited by 14 publications

(11 citation statements)

References 73 publications

(70 reference statements)

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“…Diceratids and gastropods are associated to coral colonies. structures reported by Schlagintweit (2008) in the Northern Calcareous Alps; and 3) macroboring attributed to Gastrochaenolites (Fig. 9C, E, F) and Entobia ichnogenera (Fig.…”

Section: Microencrustersmentioning

confidence: 93%

“…Differently from examples of Schlagintweit (2008), this boring occurs more frequently on coral skeletons and it is filled by diverse microencrusters. Macroboring ranging from 1.5 to 35 mm in length and from 1.5 to 7 mm in diameter; amphora-like, cylindrical with a single chamber and very smooth wall, or with irregular shape characterized by a narrow drilling channel and one or more chambers, probably interconnected, with undulated to irregular walls ( Fig.…”

Section: Microencrustersmentioning

confidence: 95%

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The Ellipsactinia Limestones of the Marsica area (Central Apennines): A reference zonation model for Upper Jurassic Intra-Tethys reef complexes

Rusciadelli

Ricci

Lathuilière

2011

Sedimentary Geology

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Section: Microencrustersmentioning

confidence: 93%

Section: Microencrustersmentioning

confidence: 95%

The Ellipsactinia Limestones of the Marsica area (Central Apennines): A reference zonation model for Upper Jurassic Intra-Tethys reef complexes

Rusciadelli

Ricci

Lathuilière

2011

Sedimentary Geology

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“…7g). These small tubes are interpreted to be boring structures, probably of the genus Trypanites (Cole and Palmer 1999;Schlagintweit 2008). Even if the nuclei of these oncoids are frequently not visible, they are well diversiWed (undiVerentiated bivalves, brachiopods, serpulids, and siliceous sponges).…”

Section: Oncoidsmentioning

confidence: 97%

Microbial carbonates and corals on the marginal French Jura platform (Late Oxfordian, Molinges section)

Olivier

Colombié

Pittet

et al. 2010

Facies

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International audienceMolinges was located on an Upper Jurassic ramp system of low-energy regime that developed at the southern margin of the French Jura platform. The sedimentary succession is characterized by the transition from a mixed siliciclastic-carbonate to a carbonate depositional setting that occurred during a long-term shallowing-upward trend. The disappearance of siliciclastics is explained by a climatic change, from humid and cold to drier and warmer conditions, previously identified in Late Oxfordian adjacent basins. The base of the section shows marl-limestone alternations of outer ramp. In its middle part, the section displays oncolitic marls, coral-microbialite beds and oncolitic limestones that deposited in a mid ramp position. Finally, the upper section part is made of oolitic limestones of inner ramp. In outer- to mid-ramp settings submitted to terrigenous inputs, the stacking pattern of deposits and facies evolution allow the identification of elementary, small-, medium-, and large-scale sequences. Small amplitudes of sea-level variations probably controlled rapid shifts of facies belts and reef window occurrences. In small-scale sequences, the coral beds developed during periods of sea-level rise. The decreasing rate of sea-level rise is marked by the downramp shift of the oncolitic limestone belt that led to the demise of coral-microbialite beds. These bioconstructions are mainly represented by thin biostromes in which corals never reach great sizes. The coral assemblages mainly include the genera Enallhelia, Dimorpharaea, Thamnasteria, and some solitary forms (Montlivaltia and Epistreptophyllum). They suggest relatively low-mesotrophic conditions in marine waters during the edification of the primary framework. Relatively cold water temperatures and periods of more elevated nutrient contents are probably responsible of the reduced coral development and the formation of a large amount of microbialites

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“…, 2007), the Northern Calcareous Alps (Schlagintweit et al. , 2005; Schlagintweit, 2008) and southern Poland (Matyszkiewicz & Słomka, 2004) at palaeolatitudes of up to ca 35° N, whereas they seem to be absent further north. In the southern hemisphere, L. aggregatum and B. irregularis were abundant in mid‐Cretaceous carbonates across the Middle East (Alsharhan, 1985; Alsharhan & Nairn, 1986; Hughes, 2000; van Buchem et al.…”

Section: Lithocodium Aggregatum and Bacinella Irregularis: Known Unknmentioning

confidence: 99%

Morphological patterns of Aptian Lithocodium-Bacinella geobodies: relation to environment and scale

Rameil

Immenhauser

Warrlich³

et al. 2010

Sedimentology

114

111

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Lithocodium aggregatum and Bacinella irregularis are now extinct, shallow marine life forms of unknown taxonomic origin. Forming part of the tropical platform biota during much of the Mesozoic, these organisms experienced bloom periods and temporarily replaced rudist–coral assemblages during parts of the Early Aptian. Within the limitations of time resolution, this ‘out‐of‐balance’ facies is coeval with the Oceanic Anoxic Event 1a‐related black shale deposition in oceanic basins but the triggering factors remain poorly understood. Here, a platform‐wide comparison of Lithocodium–Bacinella geobodies and morphotypes from the Sultanate of Oman is presented and placed in its environmental, bathymetric and physiographic context. Lithocodium–Bacinella geobodies reach from kilometre‐scale ‘superstructures’ to delicate centimetre‐sized growth forms. Clearly, scale matters and care must be taken when drawing conclusions based on spatially limited observational data. Whilst the factors that cause Lithocodium–Bacinella expansion should probably be considered in a global context, regional to local factors affected growth patterns in a more predictable manner. Here, the unresolved taxonomic relationship remains the main obstacle in any attempt to unravel the response of Lithocodium–Bacinella to specific or interlinked environmental parameters as different organisms respond differently to changing environment. Acknowledging these limitations, the following tentative patterns are observed: (i) Lithocodium–Bacinella tolerated a wide range of hydrodynamic levels and responded to differences in energy level or physiographic settings (margin, intrashelf basin, inner platform) by obtaining characteristic growth forms. (ii) Lithocodium–Bacinella favoured low‐sediment input but had the ability to react to higher sedimentation rates by enhanced upward growth; a feature perhaps pointing to a phototrophic metabolism. Circumstantial evidence for continuous growth within the upper‐sediment column is debated. (iii) The availability of accommodation space had a direct influence on the maximum size of geobodies formed. (iv) Fluctuating nutrient levels and sea water alkalinity may have affected the growth potential of Lithocodium–Bacinella. Understanding the relationship between Lithocodium–Bacinella morphogenesis on a wide range of scales and local environmental parameters allows for better prediction of the spatial distribution of reservoir properties and also results in an improved interpretation of palaeoenvironments. This study might represent a useful first step in this direction.

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Bioerosional structures and pseudoborings from Late Jurassic and Late Cretaceous-Paleocene shallow-water carbonates (Northern Calcareous Alps, Austria and SE France) with special reference to cryptobiotic foraminifera

Cited by 14 publications

References 73 publications

The Ellipsactinia Limestones of the Marsica area (Central Apennines): A reference zonation model for Upper Jurassic Intra-Tethys reef complexes

The Ellipsactinia Limestones of the Marsica area (Central Apennines): A reference zonation model for Upper Jurassic Intra-Tethys reef complexes

Microbial carbonates and corals on the marginal French Jura platform (Late Oxfordian, Molinges section)

Morphological patterns of Aptian Lithocodium-Bacinella geobodies: relation to environment and scale

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