This paper reports the preliminary results obtained by comparing geomorphologic, historic and topographic data with the aim of highlighting the most significant geomorphic changes which occurred in the landscape configuration. The study area embraces the middle Cesano River valley (Adriatic side of the Marche Apennines), an area where distinct fluvial evolution stages pointed out by individual terrace levels have been identified. Starting from the so-called "3rd order" terrace alluvium (upper Pleistocene-Holocene pp. in age), several cut-and-fill stages have been recognised on the basis of field evidence, 1'C dating of wood remnants and archaeological findings. Specifically, braid-plain aggradation stages characterise the most parf of the upper Pleistocene terrace alluvium, whereas both late-upper Pleistocene and early Holocene deposifs and terrace-surtace morphology hint at a flluvial activity related to an overa1 meandering channel pattern. lt is only in post-Roman times that braiding was at first restored and then replaced by entrenching singte straight channels. Analogously, it has been verified that the physical features of the territory strictly controlled the settlement of the ancient population. Both historical and geographical constraints account for the location of the Roman town of Suasa atop a Pleistocene terrace on the right side of Cesano River. As for man-environment interaction, it is worlh stressing that through the V-W centuries a.D. a marked climatic cooling triggered an aggradation pattern in the river valley whose effectiveness was boosted because the population drop was obviously paralleled by a progressive abandonment of agriculture as well as by hydraulic workings.

Geomorfologia e popolamento antico nella media valle del F. Cesano (Marche - Italia).

O. Nesci;D. Savelli;
2004

Abstract

This paper reports the preliminary results obtained by comparing geomorphologic, historic and topographic data with the aim of highlighting the most significant geomorphic changes which occurred in the landscape configuration. The study area embraces the middle Cesano River valley (Adriatic side of the Marche Apennines), an area where distinct fluvial evolution stages pointed out by individual terrace levels have been identified. Starting from the so-called "3rd order" terrace alluvium (upper Pleistocene-Holocene pp. in age), several cut-and-fill stages have been recognised on the basis of field evidence, 1'C dating of wood remnants and archaeological findings. Specifically, braid-plain aggradation stages characterise the most parf of the upper Pleistocene terrace alluvium, whereas both late-upper Pleistocene and early Holocene deposifs and terrace-surtace morphology hint at a flluvial activity related to an overa1 meandering channel pattern. lt is only in post-Roman times that braiding was at first restored and then replaced by entrenching singte straight channels. Analogously, it has been verified that the physical features of the territory strictly controlled the settlement of the ancient population. Both historical and geographical constraints account for the location of the Roman town of Suasa atop a Pleistocene terrace on the right side of Cesano River. As for man-environment interaction, it is worlh stressing that through the V-W centuries a.D. a marked climatic cooling triggered an aggradation pattern in the river valley whose effectiveness was boosted because the population drop was obviously paralleled by a progressive abandonment of agriculture as well as by hydraulic workings.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11576/1878754
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