Search results for "Marine terraces"
showing 5 items of 5 documents
Late Quaternary coastal uplift of southwestern Sicily, central Mediterranean sea
2021
Abstract Mapping and luminescence aging of raised marine terraces and aeolian ridges along an ∼90 km coastal stretch in southwestern Sicily provide the first quantitative assessment of vertical tectonic deformation in this region, which spans the frontal part of an active thrust belt. We recognized a staircase of eleven terraces and nine related aeolian ridges. The elevation profile of terraces parallel to the coast shows a >90 km long bell-shaped pattern, onto which shorter-wavelength (∼10 km long) undulations are superimposed. Luminescence ages from terraced beach deposits and aeolian sediments constrain the position of paleoshorelines formed during MIS 5e, 7a and 7c, with a maximum uplif…
Spatial Extent of vertical tectonic motions in northern Sicily using Holocene and Last Interglacial sea level markers: a case study between Acquedolc…
2010
Vertical position of sea-level, related deposits and morphologies (e.g., last interglacial, LIG, 125ka,) provide useful markers to utilize with this purpose (LAMBECK et alii, 2004; FERRANTI et alii, 2006, ANTONIOLI et alii, 2009). Using published (ANTONIOLI et alii, 2006) and new data we provide a review of the northern coast of Sicily uplift rates. The markers used in this study are: terraces inner margin, tidal notches, etc., and, for the last millennia archaeological markers and fossil beaches and vermetid reef. Data on vertical movements calculated for the coastal area developing in the north-Sicilian continental margin indicate that, from East to West, a strong variation of vertical ra…
Evidence of Middle and Upper Pleistocene shorelines in the area between Capo Mongerbino (Bagheria) and Piano Sperone (Altavilla Milicia), NC Sicily
2006
In the coastal tract between Capo Mongerbino (Bagheria) and Piano Sperone (Altavilla Milicia), some forms (caves, terraces, erosional surfaces) of marine origin and of remarkable morpho-tectonic importance have been located. The caves lie at different altitudes ranging from about 200 m a. s. l. (Grotta Mazzamuto) to 7 m a. s. l. (Cala dell’Osta); the terraced areas, comprised between 0 and 200 m a. s. l., are arranged in five orders. In Sicily, the coexistence of both glacial-eustatic cycles and a slow uplift, caused by the Pleistocenic tectonics, resulted into the sea showing itself under different forms at different altitudes, presumably dating back to Middle Pleistocene. The age of each …
Plio-Quaternary coastal landscape evolution of north-western Sicily (Italy)
2023
We present and discuss the results of a geomorphological and geological study aimed at reconstructing the Plio-Quaternary evolution of the NW Sicily coastal belt, a low strain rate region in the central Mediterranean Sea. We performed morphometric and field analysis of Quaternary marine terraces extracting more than 300 shoreline location points subdivided into six orders. The obtained dataset was validate by investigating the morphological changes along topographic profiles and comparing the extracted locations and elevations with the stratigraphic boundaries in the Plio-Quaternary units. We distinguished two contiguous coastal sectors characterized by different paleo-shoreline elevations …
Middle-Late Pleistocene marine terraces and fault activity in the Sant’Agata di Militello coastal area (north-eastern Sicily)
2012
Abstract The coastal sector of Sant’Agata di Militello (north-eastern Sicily) is characterized by a flight of raised Middle-Upper Pleistocene marine terraces occurring at different heights with respect to present sea level. In particular, the geomorphological survey and the analysis of stereo-pairs of aerial photographs allowed to recognize at least five main orders of well preserved Quaternary surfaces and relative deposits mostly located at the hanging wall and at the footwall of the Pleistocene northwest-dipping Capo d’Orlando normal fault, which controlled the geomorphological evolution of the coastal area. The marine terraces show an overall good morphological continuity and are formed…