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La definizione delle geometrie sedimentarie sepolte attraverso l’interpretazione integrata di dati geologici, geomorfologici e geofisici nella piana di Bojano (Provincia di Campobasso)
Author(s)
Type
Extended abstract
Language
Italian
Obiettivo Specifico
3.2. Tettonica attiva
Status
Submitted
Conference Name
Issued date
September 15, 2008
Conference Location
Sassari (Italy)
Subjects
Abstract
The Bojano plain corresponds to an elongated basin with Apennine direction, delimited by the Matese massif to SW and by the Sannio hills to NE. This area was studied utilizing geologic, geomorphologic and geophysical data, acquired mainly for microzoning of the Bojano town.
Seismic reflection data reveal structural depressions nearby the centre of the town and two basins filled by recent fluvial-lacustrine deposits at the NW and SE sectors of the plain, respectively. Low angle tectonic structures correlate with the thrust of the Matese chain over the frontal more deformable sequences of the Sannio units, but any high angle active structure cutting the Matese thrusts at their eastern limit and in the first 1500 m has been imaged.
The seismic sections have been complemented by H/V measurements of the seismic noise utilizing a seismological network installed for sites amplification analysis with a reference station and by an accurate study of the geomorphology of the area. Analyses of the morphogenetic processes contribute to the description of the evolution of the plain and of the depocentres, with depressions and structural highs or divides which strongly influenced the rivers action and the arrival of the alluvial cones.
Seismic reflection data reveal structural depressions nearby the centre of the town and two basins filled by recent fluvial-lacustrine deposits at the NW and SE sectors of the plain, respectively. Low angle tectonic structures correlate with the thrust of the Matese chain over the frontal more deformable sequences of the Sannio units, but any high angle active structure cutting the Matese thrusts at their eastern limit and in the first 1500 m has been imaged.
The seismic sections have been complemented by H/V measurements of the seismic noise utilizing a seismological network installed for sites amplification analysis with a reference station and by an accurate study of the geomorphology of the area. Analyses of the morphogenetic processes contribute to the description of the evolution of the plain and of the depocentres, with depressions and structural highs or divides which strongly influenced the rivers action and the arrival of the alluvial cones.
References
DI BUCCI D., CORRADO S., NASO G., PAROTTO M. E PRATURLON A. (1999) - Evoluzione tettonica neogenico-quaternaria dell'area molisana. Boll. Soc. Geol. It., 118, 13-30.
DISS WORKING GROUP (2007). Database of Individual Seismogenic Sources (DISS), Version 3.0.4: A compilation of potential sources for earthquakes larger than M 5.5 in Italy and surrounding areas. Istituto Nazionale di Geofisica e Vulcanologia (http://www.ingv.it/DISS/).
GUERRIERI L., SCARASCIA MUGNOZZA G. E VITTORI E. (1999) - Analisi stratigrafica e geomorfologica della conoide tardo-quaternaria di Campochiaro ed implicazioni per la Conca di Bojano in Molise. Il Quaternario, 12 (2), 237-247.
NAKAMURA Y. (1989) - A method for dynamic characteristics estimations of subsurface using microtremors on the ground surface. Quarterly Rept. RTRI, Jpn. 30, 25-33.
RUSSO F. E TERRIBILE F. (1995) - Osservazioni geomorfologiche, stratigrafiche e pedologiche sul Quaternario del Bacino di Boiano (Campobasso). Il Quaternario, 8, 1, 239-254.
VEZZANI L., GHISETTI F. E FESTA A. (2004) - Carta Geologica del Molise. Scala 1:100.000. S.EL.CA , Firenze.
DISS WORKING GROUP (2007). Database of Individual Seismogenic Sources (DISS), Version 3.0.4: A compilation of potential sources for earthquakes larger than M 5.5 in Italy and surrounding areas. Istituto Nazionale di Geofisica e Vulcanologia (http://www.ingv.it/DISS/).
GUERRIERI L., SCARASCIA MUGNOZZA G. E VITTORI E. (1999) - Analisi stratigrafica e geomorfologica della conoide tardo-quaternaria di Campochiaro ed implicazioni per la Conca di Bojano in Molise. Il Quaternario, 12 (2), 237-247.
NAKAMURA Y. (1989) - A method for dynamic characteristics estimations of subsurface using microtremors on the ground surface. Quarterly Rept. RTRI, Jpn. 30, 25-33.
RUSSO F. E TERRIBILE F. (1995) - Osservazioni geomorfologiche, stratigrafiche e pedologiche sul Quaternario del Bacino di Boiano (Campobasso). Il Quaternario, 8, 1, 239-254.
VEZZANI L., GHISETTI F. E FESTA A. (2004) - Carta Geologica del Molise. Scala 1:100.000. S.EL.CA , Firenze.
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