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The Quaternary geology of the Benevento urban area (southern Italy) for seismic microzonation purposes

Maria Rosaria Senatore, Modestino Boscaino and Felice Pinto
The Quaternary geology of the Benevento urban area (southern Italy) for seismic microzonation purposes
Italian Journal of Geosciences (February 2019) 138 (1): 66-87

Abstract

The aim of this paper is to show how the classical methods of geology can be used to evaluate local seismic effects. This knowledge is essential for planning the renovation of public and private buildings and preserving architectural heritage. The urban area of Benevento, located in the Sannio region, on the axis of the Southern Apennine Chain, is the case in point. A detailed geological survey was carried out. Sixteen boreholes were analysed, and 400 stratigraphic logs were re-interpreted. According to sediment characteristics, and depositional environments, several stratigraphic units were recognized. Their stratal correlation patterns enabled the creation of a geological model. The bedrock consists of Meso-Cenozoic pre- and syn-orogenic units followed by cover units, the oldest of which consists of lower Pleistocene Pacevecchia alluvial deposits. A geological map (1:4,000 scale), and five cross-sections define the geological model of reference. The possible amplification of seismic waves was assessed on the basis of the stratigraphic units and their internal and external characteristics in terms of lithology, lateral and vertical variations, thickness, and heterogeneity. Therefore, areas of the city safe or with the possibility to be affected by amplification phenomena have been defined. These geological results are supported by geophysical data.


ISSN: 2038-1719
EISSN: 2038-1727
Coden: BOGIAT
Serial Title: Italian Journal of Geosciences
Serial Volume: 138
Serial Issue: 1
Title: The Quaternary geology of the Benevento urban area (southern Italy) for seismic microzonation purposes
Affiliation: Universita degli Studi del Sannio, Dipartimento di Scienze e Tecnologie, Benevento, Italy
Pages: 66-87
Published: 201902
Text Language: English
Publisher: Societa Geologica Italiana, Rome, Italy
References: 73
Accession Number: 2019-005258
Categories: Quaternary geologySeismology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, geol. sketch maps
N41°04'60" - N41°10'00", E14°45'00" - E14°49'60"
Country of Publication: Italy
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Abstract, Copyright, Societa Geologica Italiana. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201905
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