Search results for " Paleoecologia"

Globorotalia truncatulinoides in the Mediterranean Basin during the Middle–Late Holocene: Bio-Chronological and Oceanographic Indicator

2022

The planktonic foraminiferal species Globorotalia truncatulinoides is widely used as a biostratigraphic proxy for the Quaternary in the Mediterranean region. High-resolution quantitative studies performed on sediment cores collected in the central and western Mediterranean Sea evidence a significant abundance of G. truncatulinoides during the Middle Holocene. The robust chronological frame allows us to date this bio-event to 4.8–4.4 ka Before Present (BP), very close to the base of the Meghalayan stage (4.2 ka BP). As a consequence, we propose that G. truncatulinoides can be considered a potential marker for the Middle–Late Holocene chronological subdivision. G. truncatulinoides is a deep-d…

LA COLLEZIONE DI AMMONOIDI TRIASSICI G.G. GEMMELLARO. REVISIONE SISTEMATICA ED IMPORTANZA PALEOBIOGEOGRAFICA

2011

Carbonate/evaporitic sedimentation during the Messinian salinity crisis in active accretionary wedge basins of the northern Calabria, southern Italy

2020

Abstract This work deals with Messinian deposits belonging to the Neogene infill of the Rossano and Belvedere Basins, respectively developed along the fore-arc and the back-arc areas of the north Calabria accretionary wedge. The main goal is to characterize the carbonate and evaporitic sedimentation during the Messinian Salinity Crisis, in the general framework of the basin architecture and the interplay between eustatic vs tectonic controlled sea-level variations. Fieldwork integrated with seismic lines and well logs interpretations led to the revision of the general stratigraphy of the basins and the proposal of a new sequential stratigraphic model driven by cyclic sea-level variations. E…

Sistematica, tafonomia e paleobiogeografia delle associazioni ad ammoniti del Giurassico Medio e Superiore della Sicilia Occidentale con particolare …

2012

Nuovi dati sulla paleoecologia del sito pleistocenico di San Teodoro (Acquedolci, Messina)

2022

La Grotta di San Teodoro (ST) è uno dei siti preistorici più importanti del Mediterraneo cen-trale. Da pochi anni il sito è oggetto di una ripre-sa delle attività di analisi stratigrafica, geologica, geochimica e paleontologia, alla luce di una colla-borazione tra il Parco Archeologico di Tindari e l’Università degli Studi di Palermo.

High-frequency modification of the central Mediterranean seafloor environment over the last 74 ka

2022

Here we present a high-resolution record of benthic foraminiferal assemblages for the last 74 kyr from the Sicily Channel Ocean Drilling Program Leg 160 Site 963. Benthic foraminiferal results are compared with geochemical (benthic and planktic δ18O and δ13C) and calcareous plankton data, previously acquired on the same marine core sediments. Within the succession, three benthic foraminifera compositional zones were defined. Temporal changes in the assemblages are interpreted in the context of the modification of subtropical and temperate climate systems that affected the Mediterranean thermohaline circulation. A close connection between bottom conditions in the Sicily Channel and eastern M…

Influence of waste water in marine ecosystem: preliminary data on benthic foraminifera assemblages and metal concentration in marine sediments

2007

Preliminary data on correlations between aberrant benthic foraminifera and metal concentrations in sediments from Palermo and Termini gulfs (Sicily)

2005

Considerations on an integrated biochronological scale of Italian Quaternary Mammals

2011

Viene analizzato il lavoro di MASINI e SALA (2007) sull’approccio integrato della distribuzione dei grandi e piccoli mammiferi dell’Italia continentale del tardo Pliocene e del Pleistocene, tenendo conto della nuova definizione del Quaternario, mettendo in risalto i punti di forza e quelli deboli della scala proposta. Vengono inoltre aggiunti nuovi dati sulla biocronologia a mammiferi del Pleistocene Superiore. The paper of MASINI and SALA (2007) regarding an integrated approach on the stratigraphic distribution patterns of large and small mammals in the late Pliocene and Pleistocene of the Italian peninsula is analysed, showing the weak and strong points. New data are presented on the mamm…

Poggetti Vecchi (Tuscany, Italy): A late Middle Pleistocene case of human-elephant interaction

2019

Abstract A paleosurface with a concentration of wooden-, bone-, and stone-tools interspersed among an accumulation of fossil bones, largely belonging to the straight-tusked elephant Palaeoloxodon antiquus, was found at the bottom of a pool, fed by hot springs, that was excavated at Poggetti Vecchi, near Grosseto (Tuscany, Italy). The site is radiometrically dated to the late Middle Pleistocene, around 171,000 years BP. Notable is the association of the artifacts with the elephant bones, and in particular the presence of digging sticks made from boxwood (Buxus sp.). Although stone tools show evidence of use mainly on animal tissues, indicating some form of interaction between hominins and an…