Search results for "NORTHERN SICILY"
showing 10 items of 22 documents
Evidences of a polyphasic tectonics in a sedimentary basin developed above an orogenic belt; the Scillato Basin study case (N Sicily)
2010
VARIABILITY OF DEPOSITIONAL SETTING ALONG THE NORTH-WESTERN SICILY CONTINENTAL SHELF (ITALY) DURING LATE QUATERNARY: EFFECTS OF SEA LEVEL CHANGES AND…
2012
The geological, geomorphological and sedimentological features of the north-western Sicily continental shelf are here illustrated with the aim to propose a geological model able to explain the Neogene-Quaternary evolution of the Sicilian continental margin in the context of the central Mediterranean region. Above the continental shelf and upper slope the sedimentary succession, showing along the different sectors of the margin considerably variable internal geometry and stratigraphic relationships with the underlying units, is interpreted as a IV order depositional sequence (Late Quaternary Depositional Sequence, LQDS) deposited during the last eustatic change (last 125 ky). The lower bound…
Benthic foraminiferal response to trace element pollution. The case study of the Gulf of Milazzo, NE Sicily (Central Mediterranean Sea).
2013
The response of benthic foraminiferal assemblages to trace element pollution in the marine sediments of the Gulf of Milazzo (north-eastern Sicily) was investigated. Since the 1960s, this coastal area has been a preferred site for the development of two small marinas and a commercial harbour as well as for heavy industry. Forty samples collected in the uppermost 3-4 cm of an undisturbed layer of sediment in the littoral environment were used for this benthic foraminiferal analysis. The enrichment factors (EFs) of selected trace elements (As, Co, Cr, Cu, Mn, Ni, Pb and Zn) were also calculated. Changes both in benthic foraminiferal assemblages and in some trace elements concentrations have pr…
The holocene marine depositional event in the historical centre of palermo
2004
Studi recenti hanno indicato come al di sopra della classica sequenza del Quaternario marino della Piana di Palermo ricorra, in alcunisiti del Centro Storico, un limitato spessore di depositi marini di età post-tirreniana. Con lo scopo di precisare l’età di tali depositi sonostate studiate le associazioni di microfossili di campioni provenienti da sondaggi geognostici. Utilizzando lo schema ecobiozonale anannofossili calcarei recentemente proposto per l’ultima deglaciazione nel Mediterraneo centrale (Canale di Sicilia) detti depositi contengononannoflore attribuibili all’Olocene. Un'analisi al radiocarbonio ha confermato tale attribuzione, limitando alla parte bassadell'Olocene la pertinenz…
Estimation of historical vertical displacement at the Capo d’Orlando coast (Northern Sicily) based on submerged grinding wheels of Greek age
2009
Sorbus madoniensis (Rosaceae), a new species from Sicily
2012
Abstract Sorbus madoniensis, a new species of Sorbus sect. Aria, is described, so far known only from two neighbouring localities on Mt. Carbonara (Madonie mountains, Sicily). It is related to S. graeca, which also occurs in the Madonie, and indeed shares with S. madoniensis one of its localities.
New seismological and geological-structural contributions to the support of a seismotectonic model of the hinge area between northern Sicily and sout…
2012
Relationships between seismicity and tectonic in northern Sicily and southern Tyrrhenian: some important open problems.
2009
Sequence of deformation in the sicilidi units (northern sicilian chain)
2004
The foredeep deposits of Northern Sicily, indicated as Sicilidi units, have undergone different deformations' since Oligocene time. The resulting tectonic Structures, analysed in several outcrops in the Eastern Madonie Mts, are 1 cm-to- 100 m in scale and are similar to the larger structures forming the Sicily belt, allowing for scale extrapolation. Also the overprinting relationships of the minor structures recorded in the so-called Tufiti di Tusa reflect the sequence of fault activation which determined the present-day geometry of the tectonic units, suggesting that the tectonic evolution of the foreland basin developed during the stacking of the Maghrebide fold-and-thrust belt. The overp…
Algal assemblages response to fish-farm biodeposition in a Southern Mediterranean area (Gulf of Castellammare, Sicily): preliminary data
2005
This study, carried out in the Gulf of Castellammare (northern coast of Sicily), concerns the effects of fish-farm nutrient enrichment on the algal assemblage growing on artificial substrata of cages. A total of 51 taxa were identified (3 Cyanophyceae, 3 Phaeophyceae, 5 Bacillariophyceae, 3 Chlorophyceae, 6 Ulvophyceae and 31 Rhodophyceae). A dominance of opportunistic species was highlighted, following a gradient from impact areas to controls.