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FORAMINIFERI PLIO-PLEISTOCENICI DEL VERSANTE SETTENTRIONALE DEI MONTI PELORITANI: ANALISI BIOSTRATIGRAFICA E PALEOAMBIENTALE
No full textThis study deals with the foraminiferal assemblages of Plio-Pleistocene sediments of the northern side of the Peloritani Mountains (North-Eastern Sicily). Six sections were closely sampled in the surroundings of Rometta (Sottocastello Sud, Sottocastello, Torrione, Sperone, Sottorometta, Rometta}, three in nearbyvalleys (Torretta, S. Sehastiano, Serro), and three others come from a quarry in the northern plain toward the Tyrrhenian Sea (Villafranca Tirrena)
IL "TIRRENIANO" DELL’ISOLA DI PANAREA (MESSINA)
No full textSeveral authors have noted the presence of sea-terraces on the island of Panarea (Aeolian Islands), which provide evidence of sea-level changes during the Quaternary interglacials. The terraces are at different heights, from a maximum of+80/110 m t0+8/18 m above sea level. A terrace has been found,+50/60m above sea level, which can date back to the "Milazziano" stage
SEDIMENTOLOGY, STRATIGRAPHY AND MICROPALEONTOLOGY OF THE TRIASSIC EVAPORITIC SEQUENCE IN THE SUBSURFACE OF THE BOCCHEGGIANO AND IN SOME OUTCROPS OF SOUTHERN TUSCANY (ITALY)
No full textThe Burano Formation, consisting of evaporitic-dolomitic horizons, has been encountered partly in boreholes and partly as scattered outcrops in Boccheggiano and southern Tuscany areas. In the boreholes, this unit overlies the Filladi di Boccheggiano Formation and is overlain by the Calcare Cavernoso or theLigurian Nappe. In outcrops, this evaporitic-dolomitic sequence, following sulphate dissolution, is represented by the brecciated unit known as Calcare Cavernoso. Sedimentological, micropaleontological and stratigraphical analyses have allowed to assign a Carnian-Norian age to the Burano Formation in southern Tuscany
A NEW SPECIES OF BIVALVE, LIMATULA GRAVINAE (PLEISTOCENE, SOUTHERN ITALY)
No full textA new species of Limatula is erected. The material derives from clayey silt cropping out near Gravina in Puglia that represents the regressive final phase of the Pleistocene "Gravina Clay" Formation
LA SUCCESSIONE NEOGENICA DI CAPO MILAZZO (SICILIA NORD-ORIENTALE)
No full textThe Neogene sedimentary sequence of Capo Milazzo (NE Sicily) has been analyzed in detail. Interest has been focused on the stratigraphic interval comprised between the metamorphic basement and the Pliocene units, which documents the response of a coastal area to the complex events that affected the Mediterranean basin during the Late Miocene
SEDIMENTOLOGIA E STRATIGRAFIA DELLE SUCCESSIONI RETICHE AL CONFINE FRA LOMBARDIA E TRENTINO
No full textThis paper deals with Rhaetic facies at the Lombardy-Trentino border, in the Giudicarie Region. This area is characterized by important facies changes crossing strike slip faults. Two coeval sections, showing remarkable facies differences, are examined in detail, in order to describe the transition between the Rhaetic Lombardy Basin and the peritidal Trento Platform. The western section shows clear lombardian features and includes two marly formations: the Argillite di Riva di Solto and the Calcare di Zu. They are characterized by asymmetric marl-limestone cycles, developed on a metric scale, and show a shallowing upward evolution, from poorly oxygenated fairly deep environments to tidal flats. The upper portion of this section is referred as a new unit, the Tremalzo limestone, that is characterized commonly by a clear peritidal bathymetric cyclicity. The wholly carbonate eastern section is considered entirely Tremalzo limestone. It shows a similar evolution, but it was deposited in shallower environments on the western margin of the Trento Platform. Bothsections are mud- dominated, but storm waves and tidal currents at times produced lenticular grainy beds. A detailed sedimentological analysis shows that these facies were deposited in a ramp system, the dynamics ofwhich were mainly controlled by eustatic fluctuations and climatic cycles
PARONELLA ? OSTUNENSIS N. SP. FROM THE UPPER CRETACEOUS OF APULIA (SOUTHERN ITALY)
No full textA new radiolitid rudist, Paronella ? ostunensis n. sp. from the Late Cretaceous of Apulia is described. The excellent preservation of the fossil material made possible to discuss the validity of the genus Paronella Wiontzek, 1934.
LE CRÉTACÉ SUPÉRIEUR DES MURGES SUD-ORIENTALES (ITALIE MÉRIDIONALE): STRATIGRAPHIE ET ÉVOLUTION DES PALÉOENVIRONNEMENTS
No full textCet etude a eu pour objectifs de préciser les connaissances litho-bio et chronostratigraphiques des successions du Crétacé supérieur (Cénomanien-Maastrichtien) affleurantes dans l’aire sud-orientale des Murges et, en plus, d’interpréter, atraversl’analyse des facies carbonatiques, l’évolution verticale et latérale des paleoenvironnements sous l’influence de l’activité tectonique de la plate-forme apulienne an cours du Cretacé superieur. En particulier, du point de vue lithostratigraphique, au dela de préciser les caracteres de la partie termina-le du Calcaire de Bari et du Calcaire d’Altamura, formations déja connues, nous avons fourni des précisations utiles si propos du "livello Sannicandro" et du "livello Toritto", des Auteurs: le premier vient retenu un Membre du Calcaire cle Bari et pourtant il vient decrit en detail, le second est inclus dans le premier puisque il s’estrévele un niveau a Rudistes present localement dans la zone de Toritto. Deux nouvelles formations sont creees: le Calcaire de Caranna et le Calcaire d’Ostuni, stratigraphiquement superposees au Calcaire d’Altamura