1,721,058 research outputs found
34th IAS International Meeting of Sedimentology, Rome, 10-13 September 2019. Field Trip - Guide Book
No full textLate Cretaceous open shelf to slope facies in the Matese Mounts (Central Apennines, Italy). Aggradation and progradation sequences
No full textRuberti D. Late Cretaceous open shelf to slope facies in the Matese Mounts (Central Apennines, Italy). Aggradation and progradation sequences. In: Géologie Méditerranéenne. Tome 21, numéro 3-4, 1994. Perimediterranean carbonate platforms. First International Meeting. Marseille – France (5-8 septembre 1994) sous la direction de Jean-Pierre Masse. pp. 159-161
Aspetti geologici e morfoclimatici di un sito di studio nella Piana Campana
No full textLa conoscenza delle caratteristiche meteoclimatiche dell’area, degli aspetti geologici, geomorfologici e idrogeologici dei terreni superficiali e del sottosuolo, indirizza la progettazione ambientale negli interventi per il drenaggio delle acque di ruscellamento superficiale di provenienza meteorica in ambito urbano e periurbano. Si concorre così alla mitigazione di fenomeni quali flash floods, allagamenti e ristagni d’acqua in aree urbane e periurbane depresse, erosione superficiale da ruscellamento concentrato e sotterranea (piping), aumentando in tal modo la stabilità complessiva e la sicurezza geologica dei terreni. In considerazione di tali aspetti, lo studio morfoclimatico del territorio di interesse si articola nei seguenti punti: 1. analisi delle caratteristiche idromorfologiche, 2. analisi delle serie di dati registrati da stazioni termopluviometriche, 3. classificazione microclimatica, 4. identificazione della legge di possibilità pluviometrica, descrivendo i principali aspetti fisico-climatici del paesaggio e idrogeologici del sottosuolo dell’area in esame.
The knowledge of meteorological and climatic features of the area, of geological, geomorphological, and hydrogeological aspects of the soil and subsoil, directs the environmental planning in the interventions for the drainage of surface runoff of meteoric waters in urban and peri-urban zones. This learning contributes to mitigating phenomena such as flash floods, flooding and stagnant water in depressed urban and peri-urban areas, and surface erosion from concentrated and underground runoff (piping), thus increasing the overall stability and geological safety of the landscape. Considering these aspects, the morphoclimatic study of the territory concerns the following points: 1. analysis of the hydromorphological characteristics, 2. analysis of the series of data recorded by thermo-pluviometric stations, 3. microclimatic classification, 4. identification of the rainfall possibility law, describing the main physical-climatic aspects of the landscape and hydrogeological features of the subsoil of the study area
Low energy vs. high energy depositional settings related sedimentary bodies in early Senonian rudist bearing carbonate shelves (central-southern Italy)
No full textCarannante Gabriele, Laviano A., Ruberti D., Simone Lucia, Sirna G., Sirna M., Tropeano M. Low energy vs. high energy depositional settings and related sedimentary bodies in early Senenian rudist bearing carbonate shelves (central-southern Italy). In: Géologie Méditerranéenne. Tome 28, numéro 1-2, 2001. Anatomy of Carbonate Bodies / Anatomie des corps carbonates. International Meeting / Colloque international. Marseille, 9-12 mai 2001, France, sous la direction de Marc Floquet, Jérôme Hennuy et Jean-Pierre Masse. pp. 37-40
Facies changes on shelves and related slopes in the Senonian Rudist bearing, foramol carbonate deposits
No full textCarannante Gabriele, Graziano R., Ruberti D., Simone Lucia. Facies changes on shelves and related slopes in the Senonian Rudist bearing, foramol carbonate deposits. In: Géologie Méditerranéenne. Tome 21, numéro 3-4, 1994. Perimediterranean carbonate platforms. First International Meeting. Marseille – France (5-8 septembre 1994) sous la direction de Jean-Pierre Masse. pp. 21-25
RUDIST LITHOSOMES RELATED TO CURRENT PATHWAYS IN UPPER CRETACEOUS, TEMPERATE-TYPE, INNER SHELVES: A CASE STUDY FROM THE CILENTO AREA, SOUTHERN ITALY
No full textShallow-water foramol limestones have been studied from a locality in the southern Apennines in which outcrop conditions show an excellent overview of the lateral and vertical evolution of rudist bodies and allow their geometry and the dynamic aspects to be reconstructed. The lithofacies suggest open depositional settings characterized by peloidal siltymuddy sediments. Rudists inhabited well-defined sectors of these shelves, giving rise to wide biostromal bodies, and supplied most of the skeletal debris via bioerosion and minor physical breakdown. In particular, the characteristics of rudist lithosomes document the existence of a complex network of channel-like depressions. In such a depositional context, the evolution of rudist lithosomes was controlled by the environmental hydrodynamic conditions. The resulting composite rudist assemblages are characterized by often-toppled individuals, suggesting continuous sediment removal between the organisms. The good preservation of the shells and the common articulation of the valves, however, point to an absence of sustained transport but rather a slight sediment destabilization. The gross lenticular geometry of the shell beds could be related to the above-mentioned patterns of weak, perhaps channelized, pathways. In such a depositional context, rudist colonization on channel margins assumes particular importance as it documents the rudist ability to exploit a wide array of environments, comparable to that of oysters in Recent seas, and reflecting the probable opportunistic nature of rudists
TEMPERATE-TYPE (FORAMOL FACIES) CARBONATE PLATFORMS VERSUS TROPICAL-TYPE (CHLOROZOAN FACIES) CARBONATE PLATFORMS: TRI-DIMENSIONAL ARRANGEMENT OF LITHOFACIES....
No full textProceedings of the COFIN 2000 Workshop "Temperate-type (Foramol facies) carbonate platforms versus tropical-type (chlorozoan facies) carbonate platforms: tridimensional arrangement of lithofacies, benthic associations and evolution of the related depositional systems", Pozzuoli, 25-27 February 200
From the Bourbon reclamation to the present landscape structure of the Volturno River coastal plain (northern Campania).
No full textThe coastal deltaic environments represent mobile geomorphic systems highly sensitive to any type of environmental change, especially those deriving from human activities that influence the landscape structure and, consequently, the ecological processes. Most of the world’s coastal wetlands are located in the delta and host natural ecosystems of great ecological and economic value. Until the beginning of the last century, most coastal areas escaped human impacts as they were sites of marshes and ponds with a high incidence of malaria. In recent decades, land reclamation and the development of tourism industries, together with rising sea levels, have exposed these areas to multiple and complex disturbance agents. The changes induced by remediation have also significantly influenced the landscape on different time and scales, and above all the hydrographic system that supplies sediments to the delta plains and beaches, resulting in accelerated coastal erosion, impoverishment of the coastal environment and degradation of habitats. The present study focused on morphological, hydraulic and land use changes that have occurred over the last 150 years in the northern Campania plain, along the eastern Tyrrhenian Sea. The analysis of historical cartography, collected, digitized and analyzed in the GIS environment, has allowed us to obtain: (1) a qualitative reconstruction of landscape changes over the last 150 years; (2) a reconstruction of land reclamation works; (3) the quantification of the resulting changes in land use and morphological configuration over the last 100 years. Since the reclamation works, which began in the 16th century, this area recorded rapid economic development and growth in urbanization, increased above all in the last 100 years. The analysis of the landscape allowed the evaluation and quantification of the main land use dynamics, highlighting the relationships between land reclamation, urbanization growth and land use changes. The main composition of the landscape underwent important changes until the beginning of 1900, when the reclamation works completed the channeling of most secondary courses of the coastal plain. This favored the development of agriculture and farming which were the main drivers of changes in the landscape structure. The fragmentation and complexity of the landscape increased between the 1960s and 1990s. Since the 1970s the built-up areas expanded at an accelerated rate along the coastal plain, at the expense of the beach-dune system, and along the river’s course. The negative sedimentary balance resulting from the reclamation works on the river courses, together with the interventions along the Volturno river basin, resulted in an accelerated and severe coastal erosion. The overgrowth of urban areas towards the sea, combined with the intensification of agricultural and tourism activities, has led over time to the loss of high quality ecosystems such as the wet coastal environment, the retrodunal lacustrine area and, in most cases, also the beach-dune system. The integration of landscape analysis and historical information highlights the importance of an interdisciplinary approach to land management and provides important indications for environmental requalification
Cenomanian carbonate depositional settings: case histories from central-southern Apennines (Italy).IN: SCOTT R.W. (ED.), CRETACEOUS RUDISTS AND CARBONATE PLATFORMS: ENVIRONMENTAL FEEDBACK-SEPM Special Pubbl.
No full textDuring latest Aptian to latest Turonian time interval global changes triggered widespread crises that resulted in world-wide anoxic episodes and drastic variations in biogenic assemblages and lithofacies in carbonate sequences. The related carbonate depositional systems changed as well. In this context, the Cenomanian represents one of the keys to understanding the turnover of facies and biota observed in Cretaceous carbonate platforms. In particular, in this time interval, both the eustatic oscillations and the tectonic events of the Periadratic region produced localized emersions and deep physiographic alterations of the Apenninic carbonate platforms. Emersion phases resulted in reduced and discontinuous Cenomanian records in centralsouthernItaly. The Cenomanian strata generally show restricted peritidal deposits and more open lagoon facies, colonized by radiolitids, nerineids, and ostreids. These pass laterally into large, complex mosaics of molluscan bioclastic shoals, closely associated with small caprinid mounds. Cenomanian outcrops of rudist-bearing limestones have been selected to show differences in the sedimentological and/or paleontological characterization. Particular attention was given to the evolution of the different depositional areas that were characterized by shelf-margin conditions vs. areas which suffered restricted circulation. The lithofacies indicate a complex zonation corresponding to transitions from shelf-margin rudist patches and their related debris to semi-restricted areas and tidal flats. Sand-shoal-related deposits also occurred. These sediments built complex sand bodies or “small islands”. “Transition zones” between shelf-margin and semi-restricted environments were characterized by the intercalation of skeletal sands episodically washed back into the inner shelf from the high-energy shelf-margin belt and migrated across the colonized areas. Waves, currents, and/or storm-related events controlled the dispersion of the skeletal grains along active current pathways and/or tide-related small channel networks. Tectonics controlled the relationships between different areas and the creation of the related accommodation space. In addition, the presence of a tectonically induced irregular topography resulted in the coexistence of areas with very different hydrodynamic conditions, allowing colonization by different organic communities and complex distribution patterns of the skeletal debris. As a consequence, Cenomanian lithofacies architecture was significantly heterogeneous
- …
