Search results for " Paleoecologia"
showing 10 items of 184 documents
New biostratigraphic data from the Ladinian pelagic limestones of Pizzo di Sant’Otiero - Madonie Mountains, Sicily
2014
New biostratigraphic data, based on conodont investigations, were collected from the Ladinian limestones recently described at Sant’Otiero, a locality near the Village of Petralia Sottana in the Madonie Mountains (Central-Northern Sicily). At this locality a new calcareous succession lying at the base of a major tectonic unit of the Maghrebian chain is described. This succession consists of a lower massive part formed by a carbonate megabreccia, the elements of which are shallow water extraclasts with dasycladalean algae (Diplopora annulatissima Pia), benthic foraminifers, “Tubiphytes” and problematic organisms commonly described from Anisian carbonate platforms. Upward a well-bedded succes…
Benthic foraminifera as indicators of relative sea-level fluctuations: Paleoenvironmental and paleoclimatic reconstruction of a Holocene marine succe…
2017
This study presents the results of an integrated stratigraphic analysis conducted on a marine gravity core (MSK-12 C4) recovered from the outer continental shelf (82 mwater depth) of western Calabria, ~2.6 km, NE of Capo Vaticano (Eastern Tyrrhenian margin). The gravity core MSK-12 C4 recovered a stratigraphic succession of 4.18 m beneath the seafloor representing the last ~11.1 ka. Sedimentological analysis, micropaleontological quantitative analysis on benthic foraminiferal assemblages, tephrostratigraphy, sequence stratigraphic analysis of high resolution reflection seismic data recorded in the core site area and AMS 14C absolute age determinations allowed reconstructing the marine recor…
Sea-level changes during the last 41,000 years in the outer shelf of the southern Tyrrhenian Sea: Evidence from benthic foraminifera and seismostrati…
2011
Abstract An integrated high resolution study based both on a seismostratigraphic approach and on a sedimentary core (VIB 10), collected in the outer shelf (127 m depth) from the southern Tyrrhenian Sea (Gulf of Termini, Sicily), provides new data about climatic, eustatic and paleoenvironmental changes during the last ∼41,000 years. The results based on the interpretation of a seismic profile, on benthic foraminifera assemblages and on δ18O records, allowed recognition of two drastic sea-level falls during the Last Glacial Maximum (LGM) and the Younger Dryas (YD). The short deglacial event, between LGM and YD, known as Bolling/Allerod, played an important role in the sea-level rise that prod…
The revision of Pinacoceras (Ammonoidea, Upper triassic) of the Gemmellaro Collection.
2010
Paleocarta del Valdarno: esperienze di valorizzazione del territorio
2019
Le faune fossili plio-pleistoceniche del Valdarno (Toscana, Italia centrale) costituiscono un patrimonio di grande importanza storico-scientifica. Al fine di favorire l’accesso della collettività alle faune del Valdarno Superiore custodite presso il Museo Paleontologico di Montevarchi (Arezzo), sia al pubblico generale che agli specialisti, è stata studiata e sviluppata la Paleocarta del Valdarno Superiore, un progetto basato sulla piattaforma Google Maps e sul software gratuito Qgis. Il progetto ha portato alla costruzione di due carte geografico-paleontologiche, suddivise a loro volta nei tre diversi momenti di popolamento del Valdarno. The Upper Pliocene – Lower Pleistocene faunas of Val…
A GEOSITE TO BE SAVED: THE TYRRHENIAN FOSSIL DEPOSIT ON THE ISLAND OF USTICA
2014
During the 1960s, fossil beds characterized by a tropical-sea malacofauna were discovered by G. Ruggieri and G. Buccheri in the Island of Ustica, on the southern slope of Falconiera hill, 32 m asl. Thanks to the presence of Strombus bubonius and other Senegalese guests, the authors estimated that the molluscan fauna had lived around 125,000 years ago, during the Tyrrhenian stage. Recently on the initiative of the “Centro Studi e Documentazione Isola di Ustica”, a research has been initiated to verify the persistence of sand-layers mixed up with Tyrrhenian fossils, even though, in the last 50 years, that area has undergone great changes, because of earthworks which have sealed the deposit. T…
The use of insular vertebrates in palaeogeographic reconstructions.
2009
Una valutazione tassonomica quantitativa preliminare della documentazione di vertebrati del Quaternario della Sicilia.
2008
A preliminary taxonomic evaluation of the Quaternary vertebrate fossil record of Sicily. A compilation of a dataset concerning the Quaternary vertebrates of Sicily, based on information from literature sources, is presented. A quantitative methodology for compilation and analysis of the data is described. The adopted numerical treatment of data is particularly effective in synthesizing and analyzing the large amount of information contained in the data set. The paper gives a synthetic picture of the consistence of the Sicilian fossil record during the considered time interval. The compilation fully confirms that the fossil record of Sicily is an important source of information on the divers…