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2D gravity modelling along the CROP11 seismic profile
Language
English
Status
Published
Peer review journal
Yes
Title of the book
Issue/vol(year)
3/47(2006)
Publisher
OGS
Pages (printed)
447-454
Issued date
2006
Keywords
Abstract
The purpose of this work is to present a gravity reconstruction of the deepest portion
of the CROP 11 seismic line. The 2D gravity modelling is constrained by DSS data
and by deep reflection seismic data obtained along the CROP 11 line. The role of the
regional gravity anomaly trend of Central Italy as an independent constraint for the
geological interpretation of the seismic line is also highlighted. The main gravity low
(Fucino Plain) in the area is compensated by the combined effect of a regional deepening
of both the Moho and the top of the crystalline basement, while the gravity low,
located east towards the Maiella Mt., seems to originate between a 4 and 10 km depth.
A lower density can be assigned to the western portion of the mantle with respect to
the eastern side. The westernmost part of the upper crust in the model also shows a
slightly lower density. The crystalline basement is not likely to be heavily involved in
the deformation of the chain; ramp-and-flat deformations are present down to a depth
of 20 km, i.e. the “highly reflective body” on the western side of the profile, which
does not have a marked gravity imprint and should be due to relatively “light” sedimentary
units.
of the CROP 11 seismic line. The 2D gravity modelling is constrained by DSS data
and by deep reflection seismic data obtained along the CROP 11 line. The role of the
regional gravity anomaly trend of Central Italy as an independent constraint for the
geological interpretation of the seismic line is also highlighted. The main gravity low
(Fucino Plain) in the area is compensated by the combined effect of a regional deepening
of both the Moho and the top of the crystalline basement, while the gravity low,
located east towards the Maiella Mt., seems to originate between a 4 and 10 km depth.
A lower density can be assigned to the western portion of the mantle with respect to
the eastern side. The westernmost part of the upper crust in the model also shows a
slightly lower density. The crystalline basement is not likely to be heavily involved in
the deformation of the chain; ramp-and-flat deformations are present down to a depth
of 20 km, i.e. the “highly reflective body” on the western side of the profile, which
does not have a marked gravity imprint and should be due to relatively “light” sedimentary
units.
References
Bernabini M., Cifelli F., Di Bucci D., Funiciello F., Orlando L., Parotto M. and Tozzi M.; 1996a: Studio gravimetrico
3D dell’Italia centrale. In: Atti del 15° Convegno Annuale del GNGTS, Esagrafica, Roma, pp. 49-52.
Bernabini M., Di Bucci D., Orlando L., Parotto M. and Tozzi M.; 1996b: Gravimetric evidence of deep structure in
mountain building: subducted adriatic crust beneath the tyrrhenian Moho in central Italy. J. Geodynamics, 3, 223-
234.
Bernabini M., Cesi C., Di Bucci D., Orlando L., Parotto M., Tiberti M.M. and Tozzi M.; 2000: Il contributo della
modellistica gravimetrica 3D per una ricostruzione dell’assetto profondo della crosta in Italia centro-meridionale:
aspetti metodologici. In: Atti 19° Convegno Nazionale GNGTS, Roma, 7-9 novembre 2000, CD-Rom.
Bernabini M., Di Bucci D., Orlando L., Parotto M., Tiberti M. M. and Tozzi M.; 2002: Nuovi vincoli gravimetrici 3D
in Italia centro-meridionale per un modello della crosta profonda. Mem. Soc. Geol. It., 57, 335-342.
Butler R. W. H., Mazzoli S., Corrado S., De Donatis M., Scrocca D., Di Bucci D., Gambini R., Naso G., Nicolai C.,
Shiner P. and Zucconi V.; 2004: Applying thick-skinned tectonic models to the Apennine thrust belt of Italy -
Limitations and implications. In: McClay K.R. (ed), Thrust tectonics and hydrocarbon systems, Am. Ass. Petr.
Geol., Tulsa (Usa), Mem. 82, pp. 647-667.
Casnedi R.; 1991: L’avanfossa abruzzese fra i fiumi Vomano e Pescara nel Pliocene inferiore: rapporti tra
sedimentazione e tettonica. Studi Geol. Camerti, vol. spec. 1991/2, 375-379.
Cassinis R., Scarascia S. and Lozej A.; 2003: The deep crustal structure of Italy and surrounding areas from seismic
refraction data. A new synthesis. Boll. Soc. Geol. It. 122, 365-376.
Cavinato G. P. and De Celles P. G.; 1999: Extensional basins in the tectonically bimodal central Apennines fold-thrust
belt, Italy: Response to corner flow above a subducting slab in retrograde motion. Geology 10, 955-958.
Cipollari P. and Cosentino D.; 1995: Miocene unconformities in the central Apennines: geodynamic significance and
sedimentary basin evolution. Tectonophysics, 252, 375-389.
Della Vedova B., Bellani S., Pellis G. and Squarci P.; 2001: Deep temperatures and surface heat flow distribution. In:
Vai G.B. and Martini I.P. (ed), Anatomy of a mountain belt: The Apennines, Kluwer Academic Publishers, London, pp. 65-76.
Goffé B., Bousquet R., Henry P. and Le Pichon X.; 2003: Effect of the chemical composition of the crust on the
metamorphic evolution of orogenic wedges. J. Metamorphic Geol., 21, 123-141.
Gualteri L. and Zappone A.; 1998: Hypothesis of ensialic subduction in the Northern Apennines: a petrophysical
contribution. Mem. Soc. Geol. It., 52, 205-214.
Hammer S.; 1963: Deep gravity interpretation by stripping. Geophysics, 28, 369-378.
Mostardini F. and Merlini S.; 1986: Appennino centro-meridionale. Sezioni Geologiche e Proposta di Modello
Strutturale. Mem. Soc. Geol. It., 35, 177-202.
Orlando L. and Bernabini M.; 2003: Dati gravimetrici filtrati e strutture profonde. In: Slejko D. (a cura di), 22°
Convegno Nazionale GNGTS, Riassunti delle comunicazioni, Tergeste, Trieste, pp. 444-445.
Parotto M., Cavinato G. P., Di Luzio E., Miccadei E., Patacca E., Scandone P., Bigi S. and Nicolich R.; 2004:
Geological interpretation of the CROP 11 seismic line between the Adriatic coast and the Tiber Valley. In: ITALIA
2004 - 32nd International Geological Congress, Florence (Italy), Abstracts volume, pp. 228.
Pasquale V., Verdoya M., Chiozzi P. and Ranalli G.; 1997: Rheology and seismotectonic regime in the northern central
Mediterranean. Tectonophysics, 270, 239-257.
Patacca E., Sartori R. and Scandone P.; 1990: Tyrrhenian basin and apenninic arcs: kinematic relations since Late
Tortonian times. Mem. Soc. Geol. It., 45, 425-451.
Peccerillo A.; 2003: Plio-Quaternary magmatism in Italy. Episodes, 26, 222-226.
Talwani M., Worzel J.L. and Landisman M.; 1959: Rapid gravity computations for two-dimensional bodies with
application to the Mendocino submarine fracture zone. J. Geophys. Res., 64, 49-59.
Tiberti M.M., Orlando L., Di Bucci D., Bernabini M. and Parotto M.; 2005: Regional gravity anomaly map and crustal
model of the Central-Southern Apennines (Italy). J. Geodyn., 40, 73-91.
Won I.J. and Bevis M.; 1987: Computing the gravitational and magnetic anomalies due to a polygon: algorithms and
fortran subroutine. Geophysics, 52, 232-238.
3D dell’Italia centrale. In: Atti del 15° Convegno Annuale del GNGTS, Esagrafica, Roma, pp. 49-52.
Bernabini M., Di Bucci D., Orlando L., Parotto M. and Tozzi M.; 1996b: Gravimetric evidence of deep structure in
mountain building: subducted adriatic crust beneath the tyrrhenian Moho in central Italy. J. Geodynamics, 3, 223-
234.
Bernabini M., Cesi C., Di Bucci D., Orlando L., Parotto M., Tiberti M.M. and Tozzi M.; 2000: Il contributo della
modellistica gravimetrica 3D per una ricostruzione dell’assetto profondo della crosta in Italia centro-meridionale:
aspetti metodologici. In: Atti 19° Convegno Nazionale GNGTS, Roma, 7-9 novembre 2000, CD-Rom.
Bernabini M., Di Bucci D., Orlando L., Parotto M., Tiberti M. M. and Tozzi M.; 2002: Nuovi vincoli gravimetrici 3D
in Italia centro-meridionale per un modello della crosta profonda. Mem. Soc. Geol. It., 57, 335-342.
Butler R. W. H., Mazzoli S., Corrado S., De Donatis M., Scrocca D., Di Bucci D., Gambini R., Naso G., Nicolai C.,
Shiner P. and Zucconi V.; 2004: Applying thick-skinned tectonic models to the Apennine thrust belt of Italy -
Limitations and implications. In: McClay K.R. (ed), Thrust tectonics and hydrocarbon systems, Am. Ass. Petr.
Geol., Tulsa (Usa), Mem. 82, pp. 647-667.
Casnedi R.; 1991: L’avanfossa abruzzese fra i fiumi Vomano e Pescara nel Pliocene inferiore: rapporti tra
sedimentazione e tettonica. Studi Geol. Camerti, vol. spec. 1991/2, 375-379.
Cassinis R., Scarascia S. and Lozej A.; 2003: The deep crustal structure of Italy and surrounding areas from seismic
refraction data. A new synthesis. Boll. Soc. Geol. It. 122, 365-376.
Cavinato G. P. and De Celles P. G.; 1999: Extensional basins in the tectonically bimodal central Apennines fold-thrust
belt, Italy: Response to corner flow above a subducting slab in retrograde motion. Geology 10, 955-958.
Cipollari P. and Cosentino D.; 1995: Miocene unconformities in the central Apennines: geodynamic significance and
sedimentary basin evolution. Tectonophysics, 252, 375-389.
Della Vedova B., Bellani S., Pellis G. and Squarci P.; 2001: Deep temperatures and surface heat flow distribution. In:
Vai G.B. and Martini I.P. (ed), Anatomy of a mountain belt: The Apennines, Kluwer Academic Publishers, London, pp. 65-76.
Goffé B., Bousquet R., Henry P. and Le Pichon X.; 2003: Effect of the chemical composition of the crust on the
metamorphic evolution of orogenic wedges. J. Metamorphic Geol., 21, 123-141.
Gualteri L. and Zappone A.; 1998: Hypothesis of ensialic subduction in the Northern Apennines: a petrophysical
contribution. Mem. Soc. Geol. It., 52, 205-214.
Hammer S.; 1963: Deep gravity interpretation by stripping. Geophysics, 28, 369-378.
Mostardini F. and Merlini S.; 1986: Appennino centro-meridionale. Sezioni Geologiche e Proposta di Modello
Strutturale. Mem. Soc. Geol. It., 35, 177-202.
Orlando L. and Bernabini M.; 2003: Dati gravimetrici filtrati e strutture profonde. In: Slejko D. (a cura di), 22°
Convegno Nazionale GNGTS, Riassunti delle comunicazioni, Tergeste, Trieste, pp. 444-445.
Parotto M., Cavinato G. P., Di Luzio E., Miccadei E., Patacca E., Scandone P., Bigi S. and Nicolich R.; 2004:
Geological interpretation of the CROP 11 seismic line between the Adriatic coast and the Tiber Valley. In: ITALIA
2004 - 32nd International Geological Congress, Florence (Italy), Abstracts volume, pp. 228.
Pasquale V., Verdoya M., Chiozzi P. and Ranalli G.; 1997: Rheology and seismotectonic regime in the northern central
Mediterranean. Tectonophysics, 270, 239-257.
Patacca E., Sartori R. and Scandone P.; 1990: Tyrrhenian basin and apenninic arcs: kinematic relations since Late
Tortonian times. Mem. Soc. Geol. It., 45, 425-451.
Peccerillo A.; 2003: Plio-Quaternary magmatism in Italy. Episodes, 26, 222-226.
Talwani M., Worzel J.L. and Landisman M.; 1959: Rapid gravity computations for two-dimensional bodies with
application to the Mendocino submarine fracture zone. J. Geophys. Res., 64, 49-59.
Tiberti M.M., Orlando L., Di Bucci D., Bernabini M. and Parotto M.; 2005: Regional gravity anomaly map and crustal
model of the Central-Southern Apennines (Italy). J. Geodyn., 40, 73-91.
Won I.J. and Bevis M.; 1987: Computing the gravitational and magnetic anomalies due to a polygon: algorithms and
fortran subroutine. Geophysics, 52, 232-238.
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