Dynamics of Tethyan Carbonate Platforms

Bosellini, Alfonso

doi:10.2110/pec.89.44.0003

Cited by 98 publications

(80 citation statements)

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“…This domain was part of the western continental margin of Africa, known as Adria or Apulia margin, which was composed of platforms and deep-sea basins with a predominantly Meso-Cenozoic carbonate sedimentation (D'Argenio, 1976;Mostardini and Merlini, 1986;Bosellini, 1989Bosellini, , 2004. This configuration was controlled by extensional faulting linked to a Norian-Lias rifting phase which led to the opening of the Mesozoic Tethyan basin (Winterer and Bosellini, 1981;Doglioni, 1987;Bertotti et al, 1993;Bernoulli, 2001;Fantoni and Franciosi, 2010).…”

Section: Regional Settingmentioning

confidence: 99%

Southern Adriatic Sea as a Potential Area for CO₂Geological Storage

Volpi

Forlin

Donda

et al. 2014

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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-The Southern Adriatic Sea is one of the five prospective areas for CO 2 storage being evaluated under the three year (FP7) European SiteChar project dedicated to the characterization of European CO 2 storage sites. The potential reservoir for CO 2 storage is represented by a carbonate formation, the wackstones and packstones of the Scaglia Formation (Upper CretaceousPaleogene). In this paper, we present the geological characterization and the 3D modeling that led to the identification of three sites, named Grazia, Rovesti and Grifone, where the Scaglia Formation, with an average thickness of 50 m, reveals good petrophysical characteristics and is overlain by an up to 1 200 thick caprock. The vicinity of the selected sites to the Enel -Federico II power plant (one of the major Italian CO 2 emittor) where a pilot plant for CO 2 capture has been already started in April 2010, represents a good opportunity to launch the first Carbon Capture and Storage (CCS) pilot project in Italy and to apply this technology at industrial level, strongly contributing at the same time at reducing the national CO 2 emissions.Re´sume´-Le sud de l'Adriatique, un secteur potentiel pour le stockage du CO 2 -Le sud de la mer Adriatique est l'un des cinq secteurs a`avoir e´te´e´value´pour le stockage du CO 2 dans le cadre du projet europe´en FP7 SiteChar qui a dure´trois ans. Le re´servoir potentiel de CO 2 consiste en une formation de carbonates, les wackestones et les packstones de la formation de la Scaglia (limite Cre´tace´-Pale´oge`ne). Nous pre´sentons dans cet article la caracte´risation ge´ologique et le mode`le 3D qui ont permis l'identification de trois sites, appele´s Grazia, Rovesti et Grifone, au niveau desquels la formation de la Scaglia, d'une e´paisseur moyenne de 50 m, pre´sente des bonnes caracte´ristiques pe´trophysiques et est recouverte d'un caprock d'une e´paisseur allant jusqu'a1 200 m. La proximite´des sites se´lectionne´s avec la centrale e´lectrique Enel -Federico II (un des e´metteurs de CO 2 italiens les plus importants), ou`une installation pilote pour la capture du CO 2 a de´ja`e´te´mise en place a`partir d'avril 2010, repre´sente une bonne opportunite´pour lancer le premier projet pilote Capture et Stockage du CO 2 (CSC) en Italie et pour appliquer cette technologie a`un niveau industriel, en contribuant fortement en meˆme temps a`la re´duction des e´missions nationales de CO 2 .

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Section: Regional Settingmentioning

confidence: 99%

Southern Adriatic Sea as a Potential Area for CO₂Geological Storage

Volpi

Forlin

Donda

et al. 2014

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…This section was deposited in the Belluno Basin, a paleogeographic unit formed in the Jurassic from regional rifting, breaking up and subsequent collapse of the Triassic shallow-water carbonate platforms (e. g., Winterer and Bosellini, 1981). Deep-water facies persisted in the south-western sector of the Belluno Basin, surrounded by shallower areas to the west (Lessini Shelf of Bosellini, 1989) and east (Friuli Platform; Fig. 1), until the late Eocene (Cita, 1975;Trevisani, 1997).…”

Section: Setting Lithology and Biochronostratigraphymentioning

confidence: 99%

“…The Alano section provides therefore an exceptional opportunity to better comprehend the role, if any, played by the MECO-related changes upon calcareous plankton evolution. Bosellini, 1989 andPapazzoni, 2003) and location of the Alano di Piave (referred to as Alano section in the text) section (star). Legend: 1) deepwater mudstones of the Jurassic basins; 2) Paleogene lagoon and shelf edge reefs; 3) Palaeogene pelagic claystones and marlstones.…”

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confidence: 99%

Ecological and evolutionary response of Tethyan planktonic foraminifera to the middle Eocene climatic optimum (MECO) from the Alano section (NE Italy)

Luciani

Giusberti

Agnini

et al. 2010

Palaeogeography, Palaeoclimatology, Palaeoecology

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a b s t r a c t a r t i c l e i n f oThe enigmatic middle Eocene climatic optimum (MECO) is a transient (∼ 500 kyr) warming event that significantly interrupted at ∼ 40 Ma the long-term cooling through the middle and late Eocene, eventually resulting in establishment of permanent Antarctic ice-sheet. This event is still poorly known and data on the biotic response are so far scarce. Here we present a detailed planktonic foraminiferal analysis of the MECO interval from a marginal basin of the central-western Tethys (Alano section, northeastern Italy). The expanded and continuous Alano section provides an excellent record of this event and offers an appealing opportunity to better understand the role of climate upon calcareous plankton evolution. A sapropel-like interval, characterized by excursions in both the carbon and oxygen bulk-carbonate isotope records, represents the lithological expression of the post-MECO event in the study area and follows the δ 18 O negative shift, interpreted as representing the MECO warming. High-resolution quantitative analysis performed on both N38 μm and N 63 μm fractions reveals pronounced and complex changes in planktonic foraminiferal assemblages indicating a strong environmental perturbation that parallels the variations of the stable isotope curves corresponding to the MECO and post-MECO intervals. These changes consist primarily in a marked increase in abundance of the relatively eutrophic subbotinids and of the small, low-oxygen tolerant Streptochilus, Chiloguembelina and Pseudohastigerina. At the same time, the arrival of the abundant opportunist eutrophic Jenkinsina and Pseudoglobigerinella bolivariana, typical species of very high-productivity areas, also occurs. The pronounced shift from oligotrophic to more eutrophic, opportunist, low-oxygen tolerant planktonic foraminiferal assemblages suggests increased nutrient input and surface ocean productivity in response to the environmental perturbation associated with the MECO. Particularly critical environmental conditions have been reached during the deposition of the sapropel-like beds as testified by the presence of common giant and/or odd morphotypes. This is interpreted as evidence of transient alteration in the ocean chemistry. The enhanced surface water productivity inferred by planktonic foraminiferal assemblages at the onset of the event should have resulted in heavier δ 13 C values. The recorded lightening of the carbon stable isotope preceding the maximum warmth therefore represents a robust indication that it derives principally by a conspicuous increase of pCO 2 . The increased productivity of surface waters, also supported by geochemical data, may have acted as mechanism for pCO 2 reduction and returned the climate system to the general Eocene cooling trend. The oxygen-depleted deep waters and the organic carbon burial following the peak of the MECO event represent the local response to the MECO warming and suggest that high sequestration of organic matter, if representing a widespread response to this event, m...

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“…1, 2) belongs to the Calcare di Nago Formation (Castellarin and Cita, 1969a), which was deposited on the western margin of the Lessini Shelf, a Cenozoic carbonate platform superimposed on the Jurassic Trento platform (Bosellini, 1989;Luciani, 1989).…”

Section: Palaeogeographic and Stratigraphic Settingmentioning

confidence: 99%

Bryozoan beds in northern Italy as a shallow-water expression of environmental changes during the Oligocene isotope event 1

Jaramillo‐Vogel

Bover‐Arnal

Strasser

2016

Sedimentary Geology

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Shifts in carbonate-producing biotic communities in the geological record provide evidence of past environmental changes in the neritic realm. The shallow-marine Calcare di Nago Formation exposed in the San Valentino section (northern Italy) covers the Late Eocene and Earliest Oligocene. The succession is characterized by the occurrence of light-dependent biota such as coralline algae and larger benthic foraminifera. In the uppermost part of the section, however,\ the fossil association is dominated by bryozoans, which are filter-feeder organisms. This ca. 12 m thick interval locally contains up to 86% bryozoans, while coralline algae as well as larger benthic foraminifera are absent. Coralline algae and nummulitid foraminifera recover in the upper part of the bryozoan beds, whereas orthophragminids do not recover. The gradual disappearance of larger foraminifera and coralline algae within the bryozoan-dominated deposits is coeval with a pronounced positive shift in δ 13 C. Based on its biostratigraphic position, this positive shift is interpreted to be linked to the positive shift in δ 13 C recognized in deepsea records shortly above the Eocene-Oligocene boundary, which in turn is associated to the positive shift in δ 18 O leading to the Oi-1 (Oligocene isotope event 1) cooling phase. Total phosphorus content increases in the bryozoan beds, suggesting enhanced nutrient supply to the neritic ecosystem. This phosphorous peak is coeval with the globally recognized increment in ocean productivity around the Oi-1 and δ 13 C positive shift. Thus, disappearance of light-dependent biota and the dominance of bryozoans in the platform carbonates studied are interpreted to result not necessarily from a deepening of the depositional environment but from the combination of lower seasurface temperatures and the deterioration of underwater light conditions on account of elevated turbidity in surface waters, resulting from enhanced primary productivity. As bryozoan beds occur in several Italian localities around the Eocene-Oligocene boundary, they are interpreted to represent the regional expression of neritic carbonate depositional systems to global environmental changes occurring at the dawn of an ice-house Earth.

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Dynamics of Tethyan Carbonate Platforms

Cited by 98 publications

References 0 publications

Southern Adriatic Sea as a Potential Area for CO₂Geological Storage

Southern Adriatic Sea as a Potential Area for CO₂Geological Storage

Ecological and evolutionary response of Tethyan planktonic foraminifera to the middle Eocene climatic optimum (MECO) from the Alano section (NE Italy)

Bryozoan beds in northern Italy as a shallow-water expression of environmental changes during the Oligocene isotope event 1

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Dynamics of Tethyan Carbonate Platforms

Cited by 98 publications

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Southern Adriatic Sea as a Potential Area for CO2Geological Storage

Southern Adriatic Sea as a Potential Area for CO2Geological Storage

Ecological and evolutionary response of Tethyan planktonic foraminifera to the middle Eocene climatic optimum (MECO) from the Alano section (NE Italy)

Bryozoan beds in northern Italy as a shallow-water expression of environmental changes during the Oligocene isotope event 1

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Southern Adriatic Sea as a Potential Area for CO₂Geological Storage

Southern Adriatic Sea as a Potential Area for CO₂Geological Storage