Publication Date:
2017-04-04
Description:
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.
Description:
Published
Description:
447-454
Description:
open
Keywords:
CROP11
;
seismic profile
;
04. Solid Earth::04.02. Exploration geophysics::04.02.02. Gravity methods
;
04. Solid Earth::04.02. Exploration geophysics::04.02.06. Seismic methods
;
04. Solid Earth::04.03. Geodesy::04.03.04. Gravity anomalies
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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