The Apennines mountain chain in Central Italy is the result of the eastward migration, during Neogene-Quaternary times, of a NW-SE thrust belt system that involved different paleogeographic domains, both carbonate and terrigenous. The up-building of the mountain chain and its evolution has generated different morphostructures. In this work we discuss geomorphologic, stratigraphic and structural data, result of a 10-year-long effort, in order to define the morphostructural elements in the Peligna region and its Quaternary evolution. Morphological features such as ridges, valleys and intermontane basins have been linked to their lithologic features (Meso-Cenozoic carbonates, Neogene siliciclastic deposits, Quaternary clastic continental deposits), to tectonic elements, both inactive (thrust) and active (normal faults), to main morphological processes. The major processes influencing the morphostructural evolution of the Peligna region are: local tectonic subsidence, along the main NW-SE oriented normal fault systems, and regional uplift, a process involving the whole Apennines chain since LatePliocene.
Morphostructural evolution of the Peligna region during the Quaternary (Central Apennine, Abruzzi, Italy).
MICCADEI, Enrico;D'ALESSANDRO, Leandro;PIACENTINI, Tommaso
2002-01-01
Abstract
The Apennines mountain chain in Central Italy is the result of the eastward migration, during Neogene-Quaternary times, of a NW-SE thrust belt system that involved different paleogeographic domains, both carbonate and terrigenous. The up-building of the mountain chain and its evolution has generated different morphostructures. In this work we discuss geomorphologic, stratigraphic and structural data, result of a 10-year-long effort, in order to define the morphostructural elements in the Peligna region and its Quaternary evolution. Morphological features such as ridges, valleys and intermontane basins have been linked to their lithologic features (Meso-Cenozoic carbonates, Neogene siliciclastic deposits, Quaternary clastic continental deposits), to tectonic elements, both inactive (thrust) and active (normal faults), to main morphological processes. The major processes influencing the morphostructural evolution of the Peligna region are: local tectonic subsidence, along the main NW-SE oriented normal fault systems, and regional uplift, a process involving the whole Apennines chain since LatePliocene.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.