The sequence of erosional surfaces and alluvial terraces there present points out the foundamental role played by regional uplift which starting from the Upper Pliocene, after the end of the main tectogenetic phase, involved the area. The genesis of alluvial deposits is referred to Plaistocene when, as a consequence of cold climates, debris material coming for bare slope overcharged rivers. They were subsequently incided by linear erosion, favored by climatic amelioration and vegetal covering of slopes which reduced debris production. Both the erosions surfaces and the older alluvial were variously displaced by recent tectonics which strongly affected also setting and evolution of drainage networks.
Geomorphological and neotectonic evolution of the Umbria-Marche Ridge, northern sector.
PAMBIANCHI, Gilberto
1985-01-01
Abstract
The sequence of erosional surfaces and alluvial terraces there present points out the foundamental role played by regional uplift which starting from the Upper Pliocene, after the end of the main tectogenetic phase, involved the area. The genesis of alluvial deposits is referred to Plaistocene when, as a consequence of cold climates, debris material coming for bare slope overcharged rivers. They were subsequently incided by linear erosion, favored by climatic amelioration and vegetal covering of slopes which reduced debris production. Both the erosions surfaces and the older alluvial were variously displaced by recent tectonics which strongly affected also setting and evolution of drainage networks.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
