气候变化领域集成服务门户(CCPortal): Active north-vergent thrusting in the northern Sicily continental margin in the frame of the quaternary evolution of the Sicilian collisional system

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DOI	10.1016/j.tecto.2021.228717
	Active north-vergent thrusting in the northern Sicily continental margin in the frame of the quaternary evolution of the Sicilian collisional system
	Sulli A.; Gasparo Morticelli M.; Agate M.; Zizzo E.
发表日期	2021
ISSN	00401951
卷号	802
英文摘要	A three-stage evolution has characterized the Sicilian Fold and Thrust Belt (SFTB) during the last 15 My: two main thin-skinned shortening events involving mainly Meso-Cenozoic carbonate units, followed by thick-skinned thrusting involving Plio-Pleistocene deposits in the frontal area as well as the crystalline basement in the inner and deeper sector of the chain. We investigated the northern Sicily continental margin, by using differently-penetrative seismic reflection data and new field surveys, which revealed, both offshore and onshore, north-vergent compressional structures that affected the tectonic edifice during Quaternary time. These structures, correlated with the kinematic setting pointed out by seismicity and GPS measurements, could disclose an important change in distribution and orientation of deformation in the frame of the Africa-Europe convergence. Our hypothesis is that the most recent tectonic processes in the northern Sicily continental margin are representative of a jump of the deformation from the frontal area of the SFTB in the Sicily Channel to the inner sector in the Southern Tyrrhenian Sea. This study is in agreement with recent interpretations about a change in the subduction polarity in the central Mediterranean orogenic system, as a consequence of the ongoing collision of the African promontory with the thinned continental to oceanic sectors (Algerian and Tyrrhenian basins) of the European plate. The seismic activity associated with the north-vergent thrust could have implication for the assessment of the seismic risk in the Central Mediterranean and understanding of active structures in marine areas that could be responsible for tsunami hazard. © 2021 Elsevier B.V.
关键词	Active Tectonics Backthrust Fold and Thrust Belt Seismicity Subduction
英文关键词	Buildings; Deformation; Offshore oil well production; Risk assessment; Tectonics; Central Mediterranean; Collisional system; Continental margin; Crystalline basement; Fold-and-thrust belts; Quaternary evolution; Seismic reflection data; Southern Tyrrhenian Sea; Seismology; collision zone; continental margin; fold and thrust belt; Quaternary; seismicity; subduction; tectonics; thrust; Italy; Sicily
语种	英语
来源期刊	Tectonophysics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/208074
作者单位	Department of Earth and Marine Science, University of Palermo, Via Archirafi 20-22, 90123, Palermo, Italy; Istituto Nazionale di Geofisica e Vulcanologia (INGV), Osservatorio Nazionale Terremoti, Via di Vigna Murata 605 - 00143, Roma
推荐引用方式 GB/T 7714	Sulli A.,Gasparo Morticelli M.,Agate M.,et al. Active north-vergent thrusting in the northern Sicily continental margin in the frame of the quaternary evolution of the Sicilian collisional system[J],2021,802.
APA	Sulli A.,Gasparo Morticelli M.,Agate M.,&Zizzo E..(2021).Active north-vergent thrusting in the northern Sicily continental margin in the frame of the quaternary evolution of the Sicilian collisional system.Tectonophysics,802.
MLA	Sulli A.,et al."Active north-vergent thrusting in the northern Sicily continental margin in the frame of the quaternary evolution of the Sicilian collisional system".Tectonophysics 802(2021).