Publikationsdatum:
2019-09-26
Beschreibung:
The architecture of foreland basins and the resulting distribution of clastic sediments
are related to the constant interplay between tectonics and sedimentation. Specifically,
basin floor modifications strongly influence dimensions, continuity and connections
of sand‐size and fine‐grained deposits. Given the increasing need to identify deep
potential reservoir deposits, the large‐scale definition of clastic porous targets and
their seals is a matter of interest for oil and gas industry. Here, we present the reconstruction
of the Po Plain and Northern Adriatic Foreland Basin (with an extent of ca.
40,000 km2) and its Pliocene–Pleistocene evolution, as an example of a sedimentary
clastic system controlled by strongly non‐cylindrical foreland geometry. The study
is based on the basin‐scale mapping of six unconformity‐bounded sequences, performed
by interpreting a dense network of seismic lines and correlating well‐log
data. This provides a three‐dimensional model of the step‐by‐step evolution of the
basin and a description of the sediment dispersal pattern. We found that the basin
records the change from a continuous (cylindrical) to highly fragmented (non‐cylindrical)
foredeep geometry during Late Pliocene. In the Northern Apennines case,
the main factors driving the development of a non‐cylindrical geometry are mainly
related to inherited inhomogeneity in the downgoing block linked to its Mesozoic
extensional faulting, and the relative orientation of these lineaments with respect to
the direction of orogen migration. During the late Pliocene–Pleistocene the two directions
progressively became close to parallel, and the Northern Apennines system
reacted changing from a cylindrical to a non‐cylindrical state.
Beschreibung:
Published
Beschreibung:
991-1015
Beschreibung:
1TR. Georisorse
Beschreibung:
2TR. Ricostruzione e modellazione della struttura crostale
Beschreibung:
JCR Journal
Schlagwort(e):
Adriatic basin
;
foreland‐foredeep basin
;
Northern Apennines
;
Plio–Pleistocene
;
Po Plain
;
tectonics and sedimentation
;
04.04. Geology
;
04.02. Exploration geophysics
Repository-Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Materialart:
article
Permalink
