Fucino plain Sample Clauses

Fucino plain. The choice of the Fucino Basin (Central Italy) as one of areas to be monitored in the framework of Task 4 is based both on its geological characteristics and on its importance in terms of seismic risk. Cavinato et al. (2002) well described the geological and tectonic origin of this basin. “The Basin was the greatest lake of the central Italy, which was completely drained at the end of 19th century. It is an intramontane half-graben filled by Plio–Quaternary alluvial and lacustrine deposits located in the central part of the Apennines chain, which was formed in Upper Pliocene and in Quaternary time by the extensional tectonic activity”. The analysis of the geological surface data (Figure 6.1) allows the definition of several stratigraphic units grouped in Lower Units and Upper Units. The Lower Units (Upper Pliocene) are exposed along the northern and north-eastern basin margins. They consist of open to marginal lacustrine deposits, breccia deposits and fluvial deposits. The Upper Units (Lower Pliocene– Holocene) consist of interbedded marginal lacustrine deposits and fluvial deposits; thick coarse-grained fan-delta deposits are interfingered at the foot of the main relief with fluvial– lacustrine deposits. Most of the thickness of the lacustrine sequences (up to 1000 m) is buried below the central part of the Fucino Plain. The basin is bounded by E–W, WSW–ENE and NW–SE fault systems: Velino–Magnola Fault (E–W) and Tremonti–Celano–Aielli Fault (WSW–ENE) and X. Xxxxxx–Celano Fault (NW–SE) to the north; the Trasacco Fault, the Pescina–Celano Fault and the Serrone Fault (NW–SE) to the south-east. Figure 6.1 Geological map of the Plio–Pleistocene continental deposits, from Cavinato et al. (2002). Figure 6.2 Fucino basin temporary network configuration. Yellow stars show the recording stations, red dots indicate deep water xxxxx.