Photo-geology of the Montefalco Quaternary Basin, Umbria, Central Italy

ABSTRACT We present a photo-geological map for the 185 km2 fault-bounded, Montefalco Basin, Umbria, Central Italy. The basin formed in the Quaternary in response to extensional tectonics dissecting folds and thrusts of the northern Apennines range. To prepare the 1:25,000 geological map, we integrated geological and morphological information obtained through the visual analysis of three sets of aerial photographs of different age, the collection of new field data, and the review of pre-existing surface and sub-surface geological data. We show that systematic interpretation of aerial photographs contributed to improving the geological mapping, providing information not readily available through traditional field mapping. We expect that the new map will be used for different types of geological and geomorphological investigations, including studies of active tectonic, Quaternary morpho-tectonics, sedimentological and stratigraphic analyses, mining and exploration investigations, and the analysis of landslide types, patterns and distribution.

[1]  A. Brogi,et al.  Tectonic control on travertine and calcareous tufa deposition in a low-temperature geothermal system (Sarteano, Central Italy) , 2012, Journal of the Geological Society.

[2]  Slope instability in the Bastardo Basin (Umbria, Central Italy) ? The landslide of Barattano , 2003 .

[3]  H. Schüttrumpf,et al.  Georisk : Assessment and Management of Risk for Engineered Systems and Geohazards , 2013 .

[4]  R. Graciotti,et al.  Memorie Descrittive della Carta Geologica d’Italia , 2009 .

[5]  P. Reichenbach,et al.  Probabilistic landslide hazard assessment at the basin scale , 2005 .

[6]  Francesco Bucci,et al.  Landslide distribution and size in response to Quaternary fault activity: the Peloritani Range, NE Sicily, Italy , 2016 .

[7]  A. Ciampalini,et al.  Photo-lithological map of the southern flank of the Tindouf Basin (Western Sahara) , 2012 .

[8]  P. Reichenbach,et al.  Landslide hazard evaluation: a review of current techniques and their application in a multi-scale study, Central Italy , 1999 .

[9]  Il Villafranchiano della Riva Umbra del F. Tevere; elementi di geomorfologia e di neottetonica , 1990 .

[10]  Pierpaolo Guarnieri,et al.  From 3D mapping to 3D modelling: a case study from the Skaergaard intrusion, southern East Greenland , 1969 .

[11]  M. Calvache,et al.  Differential features of alluvial fans controlled by tectonic or eustatic accommodation space. Examples from the Betic Cordillera, Spain , 2003 .

[12]  P. Reichenbach,et al.  Landslide hazard assessment in the Collazzone area, Umbria, Central Italy , 2006 .

[13]  Francesco Bucci,et al.  Structural geomorphology, active faulting and slope deformations in the epicentre area of the MW 7.0, 1857, Southern Italy earthquake , 2013 .

[14]  A. Baldanza,et al.  THE LATEST CONTINENTAL FILLING OF VALLE UMBRA (TIBER BASIN, CENTRAL ITALY) DATED TO ONE MILLION YEARS AGO BY MAGNETOSTRATIGRAPHY , 2012 .

[15]  M. Abdel-Latif,et al.  Landslide hazard assessment , 1994 .

[16]  I. Marchesini,et al.  An approach to reduce mapping errors in the production of landslide inventory maps , 2015 .

[17]  D. Turcotte,et al.  Landslide inventories and their statistical properties , 2004 .

[18]  Simone Tarquini,et al.  TINITALY/01: a new Triangular Irregular Network of Italy , 2007 .

[19]  S. Pucci,et al.  Interaction between regional and local tectonic forcing along a complex Quaternary extensional basin: Upper Tiber Valley, Northern Apennines, Italy , 2014 .

[20]  M. Piccarreta,et al.  Geomorphological map of the area between Craco and Pisticci (Basilicata, Italy) , 2015 .

[21]  F. Guzzetti,et al.  Frontal collapse during thrust propagation in mountain belts: a case study in the Lucania Apennines, Southern Italy , 2014, Journal of the Geological Society.

[22]  I. Martini,et al.  Tectono-sedimentary characteristics of Late Miocene-Quaternary extensional basins of the Northern Apennines, Italy , 1993 .

[23]  Marcello Schiattarella,et al.  Interplay between mass movement and fluvial network organization: An example from southern Apennines, Italy , 2013 .

[24]  Ivan Marchesini,et al.  A GIS Method for Obtaining Geologic Bedding Attitude , 2013 .

[25]  Marcello Schiattarella,et al.  Landslide inventory map of the upper Sinni River valley, Southern Italy† , 2015 .

[26]  P. Reichenbach,et al.  Comparing landslide inventory maps , 2008 .

[27]  G. Prosser,et al.  Geological map of the northeastern sector of the high Agri Valley, Southern Apennines (Basilicata, Italy) , 2012 .

[28]  Francesco Bucci,et al.  Assessing the influence of morpho-structural setting on landslide abundance , 2015 .

[29]  Ivan Marchesini,et al.  A method for the assessment of the influence of bedding on landslide abundance and types , 2015, Landslides.

[30]  P. Reichenbach,et al.  The Influence of Structural Setting and Lithology on Landslide Type and Pattern , 1996 .

[31]  Quaternary geology of the Middle Aterno Valley, 2009 L'Aquila earthquake area (Abruzzi Apennines, Italy) , 2015 .

[32]  M. Barchi.  The Neogene-Quaternary evolution of the Northern Apennines: crustal structure, style of deformation and seismicity. , 2010 .

[33]  P. Reichenbach,et al.  Large alluvial fans in the north-central Po Plain (Northern Italy) , 1997 .

[34]  Fawzi Doumaz,et al.  Release of a 10-m-resolution DEM for the Italian territory: Comparison with global-coverage DEMs and anaglyph-mode exploration via the web , 2012, Comput. Geosci..

[35]  I. Henderson,et al.  Regional spatial variations in rockslide distribution from structural geology ranking: an example from Storfjorden, western Norway , 2011 .