Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/14454
Authors: | Ferranti, Luigi* Burrato, Pierfrancesco* Sechi, Daniele* Andreucci, Stefano* Pepe, Fabrizio* Pascucci, Vincenzo* |
Title: | Late Quaternary coastal uplift of southwestern Sicily, central Mediterranean sea | Journal: | Quaternary Science Reviews | Series/Report no.: | /255 (2021) | Publisher: | Elsevier | Issue Date: | 1-Mar-2021 | DOI: | 10.1016/j.quascirev.2021.106812 | URL: | https://www.sciencedirect.com/science/article/pii/S0277379121000196 | Keywords: | Marine terraces Aeolian ridges Luminescence dating Pleistocene Frontal thrust belt Fold growth Southwestern Sicily Mediterranean sea |
Subject Classification: | 04.04. Geology | 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 uplift rate of ∼0.75 mm/a, and indicate a late Middle-Late Pleistocene (80–400 ka) age for the sequence of terraces. The elevation of Lower Pleistocene morpho-depositional markers points that uplift may have occurred at similar rates at the beginning of the Early Pleistocene, but almost zeroed between ∼1.5 and 0.4 Ma before the recent renewal. The uneven elevation of Middle-Upper Pleistocene paleoshorelines observed moving along the coast documents that uplift embeds both a regional and a local component. The regional, symmetric bell-shaped uplift is related to involvement in the thrust belt of thicker crustal portions of the northern African continental margin. The short-wavelength undulations represent the local component and correspond to actively growing bedrock folds. The present study contributes to unravel the different spatial and temporal scales of deformation processes at a collisional margin. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Ferranti&2021_QSR_SicilySW.pdf | Published paper | 11.17 MB | Adobe PDF | View/Open |
Ferranti&2021_pagination_JQSR_106812.pdf | Pre-print | 5.98 MB | Adobe PDF | View/Open |
Page view(s)
144
checked on Apr 24, 2024
Download(s)
148
checked on Apr 24, 2024