RODOLFO COCCIONI - Profile on Academia.edu (original) (raw)

Papers by RODOLFO COCCIONI

250 Million Years of Earth History in Central Italy: Celebrating 25 Years of the Geological Observatory of Coldigioco

The complete and well-studied pelagic carbonate successions from the Umbria-Marche basin (Italy) ... more The complete and well-studied pelagic carbonate successions from the Umbria-Marche basin (Italy) permit the study of the event-rich stratigraphic interval around the Cretaceous-Paleogene boundary (e.g., Deccan volcanism, boundary impact, Paleocene recovery, and climate). To test the robustness of various proxy records (bulk carbonate d 13 C, d 18 O, 87 Sr/ 86 Sr, and Ca, Fe, Sr, and Mn concentrations) inside the Umbria-Marche basin, several stratigraphically equivalent sections were investigated (Bottaccione Gorge, Contessa Highway, Fornaci East quarry, Frontale, Morello, and Petriccio core). Besides the classical Gubbio sections of Bottaccione and Contessa, the new Morello section is put forward as an alternative location for this stratigraphic interval because it is less altered by burial diagenesis. Elemental profiles (Ca, Fe, Sr, Mn) acquired by handheld X-ray fluorescence (pXRF) efficiently provide regional chemostratigraphic and paleoenvironmental information. The Deccan volcanism, the Cretaceous-Paleogene boundary, the characteristic pattern of the Sr/Ca profile across the boundary driven by the extinction and recovery of coccolithophores, and the Dan-C2 hyperthermal event are examples of such recorded paleoenvironmental events. Moreover, cyclostratigraphic analyses of proxies of detrital input (magnetic susceptibility and Fe concentrations) show the imprint in the sedimentary record of a 2.4 m.y. eccentricity minimum around 66.45-66.25 Ma, and suggest that the occurrence of the Dan-C2 hyperthermal event was astronomically paced.

Large ecosystem perturbations : causes and consequences

Contents Preface............................................................................ v 1.... more Contents Preface............................................................................ v 1. Cenozoic mass extinctions in the deep sea: What perturbs the largest habitat on Earth?......... 1 Ellen Thomas 2. A major Pliocene coccolithophore turnover: Change in morphological strategy in the photic zone..................... ...

Variação na mineralogia magnética ao longo dos eventos de anoxia oceânica do Cretáceo: Um exemplo do OAE1 na Bacia Umbria-Marche, Itália

13th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 26–29 August 2013, 2013

Marine Ecosystems, 2012

Among the meiobenthic protozoans, Foraminifera (class Foraminifera, phylum Granuloreticulata) are... more Among the meiobenthic protozoans, Foraminifera (class Foraminifera, phylum Granuloreticulata) are the most abundant and diverse of the shelled microorganisms in the www.intechopen.com Marine Ecosystems 78 oceans (Sen Gupta, 1999). The phylum Nematoda, meanwhile, is the most plentiful (often >50% of the total meiofauna, up to >90% in deep-sea sediments) and diverse metazoan meiofauna taxon (Boucher & Lambshead, 1995; Giere, 2009). Foraminifera play a significant role in global biogeochemical cycles of inorganic and organic compounds, making them one of the most important groups on Earth (Yanko et al., 1999). Furthermore, many foraminiferal taxa secrete a carbonate shell that is readily preserved, and so record evidence of environmental stresses and changes over time. They are commonly small and abundant compared to other hard-shelled taxa and easy to collect, providing a highly reliable database for statistical analysis, even when only a limited volume of samples is available. Because of their widespread distribution, short life and reproductive cycles, high biodiversity, and specific ecological requirements, foraminifera may respond to environmental changes (e.g. Alve, 1995; Murray & Alve, 2002; Yanko et al., 1994). Moreover, with their high number of species and genera-around three to four thousand of the former (Murray, 2007)-benthic foraminifera are more likely to contain a variety of specialists that are sensitive to environmental change. For all of these reasons, they are particularly sensitive and can thus be successfully used for their value as bio-indicators of environmental change in a wide range of marine environments (Armynot du Châtelet & Debenay, 2010; Frontalini & Coccioni, 2011). The use of benthic foraminifera as bioindicators of environmental quality can be investigated in terms of population density and diversity, assemblage structure, reproduction capability, test morphology-including size (dwarfism), prolocular morphology, ultrastructure, pyritization, abnormality, and the chemistry of the test. The study of pollution effects on benthic foraminifera and their use as proxies began in the 1960s (Boltovskoy, 1965; Resig, 1960; Watkins, 1961), and has been increasingly developed in recent decades as a result of environmental research (for reviews,

Scientia Marina, 2013

This paper presents an integrated investigation of benthic foraminiferal, meiofaunal and macrofau... more This paper presents an integrated investigation of benthic foraminiferal, meiofaunal and macrofaunal assemblages that was carried out in front of the marine area of the Monte St. Bartolo Regional Natural Park (Adriatic Sea, Italy). Although this area is not yet subject to conservation plans, an overall good quality status of its benthic assemblages was documented. In particular, the assemblages were somewhat diversified and generally minimally to moderately affected by anthropogenic activities. Both the foraminifera and macrofauna seemed to be primarily influenced by variations in the habitat's features, whereas significant changes in the meiofaunal assemblage were related more to trophic supply fluctuations. These data suggest the potential vulnerability of this area and highlight the importance of defining and applying an appropriate integrated zone management plan.

Heidbergella Rhinoceros Sp. N., a Potential New Biostratigraphic Marker from Late Aptian-Early Albian Marne a Fucoidi (Central Italy)

A new planktonic foraminiferal species, Hedbergella rhinoceros, from the Late Aptian to the Early... more A new planktonic foraminiferal species, Hedbergella rhinoceros, from the Late Aptian to the Early Albian sediments of the Marne a Fucoidi formation (Umbro —Marchean Apennines, central Italy) is described and illustrated

有孔虫の超微細構造:蛍光プローブと蛍光プローブからの展望【JST・京大機械翻訳】

Journal of Geophysical Research, 2019

Table S1) He isotope ratios from Bottaccione Gorge

(Table 3) Planktic foraminiferal abundance in Oligocene to Early Pliocene sediments of ODP Hole 177-1090D on the Agulhas Ridge, South Atlantic

Osmium isotopic data of Hauterivian carbonate samples obtained from Fiume Bosso section, central Italy

Data sets include the osmium and carbon isotopic information of the limestone samples collected f... more Data sets include the osmium and carbon isotopic information of the limestone samples collected from the Fiume Bosso section (43°31'07.2N 12°34'15.4E), central Italy. Os and carbon isotopic measurements were conducted from December 2019 to October 2020 to reconstruct paleo-marine Os and carbon isotopic variations. Os isotopic ratios were measured with thermal ionization mass spectrometry (TRITON, Thermo Fisher Scientific, USA) and carbon isotopic ratio were measured with isotope ratio mass spectrometry (Delta V plus, Thermo Fisher Scientific, USA). Our data covers from the upper Hauterivian to the lower Barremian of the Lower Cretaceous.

Carbon isotopic data of Hauterivian carbonate samples obtained from Fiume Bosso section, central Italy

Micropaleontology

Three Paleocene-Eocene (P-E) stratigraphic transect sections namely, from the north to south, Ain... more Three Paleocene-Eocene (P-E) stratigraphic transect sections namely, from the north to south, Ain Maqfi, Farafra-Ain Dalla road, and El-Quess Abu Said in the northern Farafra Oasis,Western Desert (Egypt) are described and interpreted based upon field observations, microfacies analysis, chronostratigraphy and foraminiferal paleobathymetry, to detect the effect of the Syrian Arc Fold System (SAFS) on the lateral and vertical facies changes, various stratigraphic breaks and to reconstruct the depositional paleoenvironments. Lithostratigraphically, the P-E successions are composed of the upper part of the Dakhla Formation, Tarawan Chalk and Esna Shale Formation. Vertical and lateral facies changes are noted between tectonic paleo-highs and paleo-lows in the Farafra Oasis. Eight microfacies types are recognized. The larger benthic and planktonic foraminiferal zones are here used to correlate the shallow and deeper facies. Two larger benthic (SBZ4 and SBZ6), six planktonic foraminiferal (...

(Appendix 1) Sulphur isotope ratios barite and carbonate associated sulphates from Cretaceous ODP and DSDP sediment samples

(Table S7) Os/Ir and Pt/Ir ratios in DSDP Hole 74-525A

(Table S5) Os isotope and platinum group element content in ODP Hole 113-690C

(Table S3) Calcium carbonate content in ODP Hole 113-690C and DSDP Site 86-577

(Table 3) Isotopic composition of total organic carbon in sediments from Gorgo a Cerbara

(Table 4) Planktic foraminiferal abundance in Oligocene to Early Miocene sediments of ODP Hole 177-1090E on the Agulhas Ridge, South Atlantic

(Table 1) Main planktic foraminiferal events at ODP Site 177-1090 on the Agulhas Ridge, South Atlantic

Determinação do M0r (limite Barremiano-Aptiano) na seção sedimentar de Poggio Le Guaine (PLG), Itália