Search results for "terraces"

Sedimentation close to the active Medlicott Wadia Thrust (Western Himalaya): how to estimate climatic base level changes and tectonics.

2017

16 pages; International audience; The Medlicott-Wadia Thrust (MWT) is one of the major active out-of-sequence thrusts in the Himalaya. Studies on Quaternary terraces in its vicinity have been performed using sedimentological, geomorphic and geochronological methods. We focus on the Riasi zone, south of the Pir Panjal range, in the Jammu and Kashmir region of India. The sedimentary units of Quaternary landforms have been mapped as a function of their location with respect to the thrust faults, their relative chronology, and their lithology. Three aggrading sedimentary units, five thin units above strath surfaces at the footwall of the fault system, and seven thin units above strath surfaces …

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…

STOP 9: Upper Daugava spillway valley and associated gully network at Vasargelišķi

2014

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…

Original vegetation recovery of two degraded areas in the Mediterranean island of Marettimo.

2009

Olive agroforestry systems in Sicily: Cultivated typologies and secondary succession processes after abandonment

2011

The first part of this study provides an overview on Sicilian olive systems. Subsequently, the study describes the different typologies of cultivated agroforestry systems present in South-Eastern Sicily employing olive trees in association with other Mediterranean tree species, in particular for the production of firewood, coal and animal food (downy or pubescent oak, holm oak, cork oak), but also in association with forage or grazing species (oat, barley, vetch, etc.) or cereals. The study shows that Sicilian agroforestry systems are much more diversified than it was known so far. In the second part, the study describes the spontaneous colonization processes by plants, observed in abandone…

An empirical test of neighbourhood effect and safe-site effect in abandoned Mediterranean vineyards

2011

The importance of both neighbourhood effect and safe-site effect for the colonization of Mediterranean old fields by woody plants was investigated. Using a transect approach, we recorded colonization of 21 species of woody plants on abandoned, terraced vineyards on Pantelleria Island (Sicily) in dependence from neighbouring terraces in older succession stages (Maquis) and available safe sites for seedling establishment (former crop plant, terrace wall). With a paired design of four treatments, including presence/absence of adjacent older successional stages, and North-/South-facing slopes, a neighbourhood effect could be shown for both expositions if the transect started from an adjacent fi…

Muyong and subak. Farm production, cultural heritage and environmental challenges in the terraced rice fields of Bali, Indonesia and the Ifugao count…

2017

The terraced rice fields of Bali and the northern Philippines are not just spectacular agricultural production sites located in hilly or mountainous areas. Their development by the Hindu Balinese and the non-Christianized Ifugao includes a strong religious dimension as well as a complex social organization around the management of water resources. The recent rise of tourism, coupled with the UNESCO world heritage recognition of these agricultural areas, leads today to several challenges that may jeopardize the balance of these societies: tourism overcrowding, loss of authenticity, abandonment of farming by young people. Are these sophisticated local farming systems sustainable in the contex…

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 …