In the framework of geosite management, specific targeted symbols for geomorphological legends are still lacking. Concerning geosites of geomorphological interest, geomorphological mapping requires targeted symbols in relation to goals and applications, either concerning geomorphic hazards and risk detection or the enhancement of resources, in particular those related to cultural heritage and, hence, geoheritage. A new methodology for mapping geo(morpho)heritage on geomorphological maps is presented in this paper. Nine iconic examples from the Italian landscape, selected in different morphogenetic and morphoclimatic contexts, are proposed to test the methodology in relation to point, polyline and polygon features. Moreover, guidelines for mapping are suggested according to the importance of the site and to the complexity of processes characterizing each case study.

The excellent preservation, together with a large number of exposures of Quaternary terrace-alluvium and related deposits, made since a long time the northern Marche (central Apennines) an object of targeted scientific work. The stream terraces exposed in the area can be taken as representative of both arrangement and development of terrace staircases in several river basins draining the Adriatic side of the Apennines. In this frame, this paper focuses on types and development of stream terrace staircases in the northern Marche Apennines both reviewing pre-existing data and providing some appraisals on recent achievements. In this area, the overall pattern of main valleys, which flow eastwards into the Adriatic Sea, was already delineated in the Early Pleistocene-Early Middle Pleistocene, thus allowing initial almost-flat surfaces to be gradually furrowed by valleys where stream terraces could develop. Initially, likely accounting mainly for tectonic controls, only erosive terrace-staircases were formed, which at present are arranged on several levels at the highest elevations above the thalweg. Later on, likely following the so-called “Mid-Pleistocene Revolution”, fill terraces started to develop extensively all along the main valleys. In the northern Marche main valleys, four principal climate-driven fill terraces are found at approximately 100 ka cycle, to which an undefined number of minor and/or local recent units are overlapped. Modes of both fill terrace re-incision and stream entrenchment in bedrock in downcutting regimes also suggest that both warming- and cooling-limb forcing of incision were effective.

The stream length-gradient (SL) index is widely used in geomorphological studies aimed at detecting knickzones, which are extensive along-stream deviations from the typical concave-up shape assumed for stream longitudinal profiles at steady-state conditions. In particular, SL was practical for identifying anomalous gradients along bedrock stream channels in mountainous catchments. This work presents the GIS toolbox SLiX designed to extract values of the SL index, starting from Digital Elevation Models (DEMs). SLiX is also suitable for the spatial analysis of the SL values, allowing for the identification of landscape portions where anomalous high values of SL occur and, consequently, those catchment sectors where stream channels show peaks in the erosional dynamic. The SLiX main outputs are (i) point shapefiles containing, among stream channels attributes, the extracted values of SL along the stream network analyzed, and (ii) SL anomaly maps in GeoTIFF format, computed through the Hotspot and Cluster Analysis (HCA), that permit the detection of the catchment sectors where the major SL anomalies occur and consequently the principal knickzones. The application of the proposed tool within an experimental catchment located in the Northern Apennines of Italy demonstrated the proper functionality and the potential of its use for different geomorphological and environmental studies. The accurate and cost-effective detection of anomalous changes in stream gradient ensured by SLiX is of great interest and can be useful for studies aimed at unravelling the Earth processes responsible of their formation (e.g., active hillslope processes, such as landslides directly interacting with the streambed, presence of geological structures, and meander cut-off). The applications of SLiX have clear implications for preliminary analyses, at a regional scale in different morpho-climatic contexts, for the hydrological management of river basins and/or to prevent geological hazards related to the fluvial erosional dynamics.

The inventory and evaluation of geosites are fundamental steps of any geoconservation strategies and in setting priorities for the management of protected areas. The North-Marchean Apennines (central Italy) host an extraordinary geoheritage, making its use by society worthwhile and meaningful (e.g., teaching/learning, tourism, and recreation). An area of 600 square kilometres embracing 18 municipalities, mainly distributed along the Mt. Catria–Mt. Nerone ridge, is home to numerous spectacular geosites. The purpose of this study is to analyze the environmental heritage of the North-Marchean Apennines through the recognition, selection, and description of an extensive list of geosites, with a view to providing useful data for the establishment of a possible geopark discussed in the context of a region that is rich in protected areas. Among these, seven geosites were chosen as representative of the area and were processed through a quantitative evaluation method. The calculated Q-values are indicative of geosites of high significance and well represent the great variety and strong potential of this area. The seven geosites, witnesses of sites with a high aesthetic value, are framed from a geological and geomorphological point of view, without neglecting the additional values that make these localities particularly attractive for geotouristic and educational purposes. The study area is finally framed in the context of the region’s protected areas, with a view to the conservation and enhancement of its environmental heritage.

The geomorphological analysis of historically urbanized areas is the best scientific way to understand how the extant geomorphological factors conditioned urbanization. It also provides a baseline to enable comparisons to be made with the modern environment. This paper considers four urbanized historical sites on the Adriatic coast (Italy) that owe their urban development to particular geomorphological and environmental conditions that were modified over the centuries from the Roman age to the present day. The focus here is on the evolution of the shoreline and associated geomorphic variables (streambeds and river mouths migration). These factors are fundamental for determining the development of a city, both as basic boundary elements – therefore including defence and protection – and also for the development of harbours.