Oligocene Reef Coral Biofacies of the Vicentin, Northeast Italy

Frost, S. H.

doi:10.2110/pec.81.30.0483

Cited by 40 publications

(25 citation statements)

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“…Examples include the Middle Ordovician of Canada (Barnes 1965), the Middle Devonian of Morocco (Königshof and Kershaw 2006), the Late Devonian of the Canning Basin, Australia (Playford 1980;Wood 2000), the Late Jurassic of Germany (Barthel 1977), the Oligocene of the Caribbean (Frost 1977) and northern Italy (Frost 1981), and the Pleistocene of Henderson Island, southeastern PaciWc (PandolW 1995). Like in the modern, the formation of fossil spurs and grooves has been explained both by construction (Playford 1980;Wood 2000) and erosion (Barnes 1965;Barthel 1977).…”

Section: Discussionmentioning

confidence: 99%

Indo-Pacific and Atlantic spurs and grooves revisited: the possible effects of different Holocene sea-level history, exposure, and reef accretion rate in the shallow fore reef

Gischler

2010

Facies

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Shallow fore-reef areas worldwide are usually characterized by spurs and grooves. A comparison of examples from the three world oceans suggests that Indo-PaciWc spurs and grooves are shaped predominantly by erosion, whereas western Atlantic spur and groove systems are largely a product of constructive processes. I propose that this diVerence is caused by regional diVerences in Holocene sea-level change, which controlled exposure to waves and currents, and reef-accretion rates. The transgressive-regressive sea-level curve in the Indo-PaciWc realm, i.e., the Mid-to-Late Holocene sea-level fall in these areas has maintained high-energy conditions in the shallow fore reef. Higher exposure to waves and currents favors erosion and leads to a dominance of crustose coralline algae that have relatively slow growth rates. In the western Atlantic, the transgressive Holocene sea level has caused Mid-to-Late Holocene deepening and has maintained accommodation space for reef accretion. Fast-growing acroporid corals thrive under lower exposure and are more common than coralline algae. The fossil record of the spur and groove system is rather poor, which is probably a consequence of the need of excellent, three-dimensional outcrops for identiWcation.

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Section: Discussionmentioning

confidence: 99%

Indo-Pacific and Atlantic spurs and grooves revisited: the possible effects of different Holocene sea-level history, exposure, and reef accretion rate in the shallow fore reef

Gischler

2010

Facies

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“…In the lower part, in particular where Oligocene calcarenites directly lay on top of the Boro Conglomerate, minor marly inter-layers are present. This limestone formation represents the shelf lagoon deposit of a carbonate platform whose reef margin was located on the south-eastern Berici Hills (Geister and Ungaro, 1977;Frost, 1981).…”

Section: Geographical and Geological Setting Of Priabona Areamentioning

confidence: 99%

Hypogenic contribution to speleogenesis in a predominant epigenic karst system: A case study from the Venetian Alps, Italy

et al. 2012

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“…S1a, S1b and S2. Data from subsurface Malta indicates miliolid wackestone with corals (FA V), whereas outcrops of the Castelgomberto Formation in Veneto (Italy) (Frost 1981) and Greece (Wieland-Schuster et al 2004) include coral reef framework (FA IV) and miliolid packstone associated with lagoonal environment. Data from other localities are sparse due to major fig.…”

Section: Depositional Sequencesmentioning

confidence: 99%

“…Coral frameworks increased in size from isolated to coalescent patch reefs in the northern Sirt Basin of Libya (Hladil et al 1991) and Malta, to large reefal constructions in north central Greece (Wieland-Schuster et al 2004) and in Italy along palaeoslopes of the Apulian Platform (Bosellini 2006) and Veneto (Frost 1981). Secondary porosity is enhanced by the dissolution of the aragonite of scleractinian corals, resulting in heterogeneous vertical and horizontal porosity.…”

Section: Climate Control On the Cenozoic Mediterranean Limestone Recordmentioning

confidence: 99%

Climatic controls on facies in Palaeogene Mediterranean subtropical carbonate platforms

Gatt

Gluyas

2012

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Cenozoic carbonate platforms in the central Mediterranean region show distinct vertical changes in carbonate skeletal assemblages and porosity characteristics that reflect shifts in environmental conditions affecting the western Tethys. The Photozoan Association produced by carbonate ecosystems adapted to low nutrient environments and the Heterozoan Association favoured by mesotrophic conditions alternate through time over the Malta Platform and nearby carbonate platforms, although not in phase with trans-Mediterranean Oligocene carbonates. This anomaly reflects the transitional nature of Cenozoic climate as well as continental convergence of the Tethyan margins. Restricted conditions amplified the effect of nutrient flux from North African fluvial systems, which was controlled by meridional shifts in the inter-tropical convergence zone (ITCZ) precipitation belt. We model the climate-carbonate interaction by comparing the global oxygen isotope proxy to ice volume and meridional position of the ITCZ to changes in trophic level of carbonate ecosystems. The results show that the development of Palaeogene Mediterranean photozoan assemblages coincides with periods when the ITCZ had shifted away from North Africa (as is the case presently), whereas the heterozoan assemblages thrived during increased nutrient flux when the precipitation belt was located over the Sahara. The climatic controls resulted in facies characteristics that exert a fundamental influence on porosity in carbonate reservoirs. Downloaded from fig. 2. Location and name of Oligocene formations referred to in text. Biotas include coralline red algae (CRA), large benthic foraminifera (LBF), bryozoans (Bry) and coral recorded in outcrops from the inner, mid-and outer platform environment.

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Oligocene Reef Coral Biofacies of the Vicentin, Northeast Italy

Cited by 40 publications

References 0 publications

Indo-Pacific and Atlantic spurs and grooves revisited: the possible effects of different Holocene sea-level history, exposure, and reef accretion rate in the shallow fore reef

Indo-Pacific and Atlantic spurs and grooves revisited: the possible effects of different Holocene sea-level history, exposure, and reef accretion rate in the shallow fore reef

Hypogenic contribution to speleogenesis in a predominant epigenic karst system: A case study from the Venetian Alps, Italy

Climatic controls on facies in Palaeogene Mediterranean subtropical carbonate platforms

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