DBPapers
DOI: 10.5593/sgem2012/s08.v2006

PHOTOGRAMMETRIC METHOD FOR GEOMORPHOLOGICAL MODELL A BASE KNOWLEDGE FOR PROPOSALS FUTURE PROJECTS OF RESTORATION AND RECLAMATION OF AN ABANDONED MINE SITE IN SARDINIA (ITALY)

M. FIORI, C. MATZUZZI
Wednesday 1 August 2012 by Libadmin2012

References: 12th International Multidisciplinary Scientific GeoConference, www.sgem.org, SGEM2012 Conference Proceedings/ ISSN 1314-2704, June 17-23, 2012, Vol. 2, 887 - 894 pp

ABSTRACT

Often, after their closure, abandoned open pit excavations may create negative safety
and environmental impacts. A long lasting intense volcanic activity took place in West
Sardinia during the end of the Oligocene. Along the waning phases of this volcanism, a
significant hydrothermal activity developed, producing local alteration and precious
and base-metal mineralisations such as epithermal high and low sulphidation veins. In
particular, economic gold occurrences were discovered in (the) Serrenti-Furtei area
(Southern Sardinia). A typical example of volcanic-hosted high-sulphidation epithermal
gold deposit is the mine located in Furtei, with gold hosted in a complex series of
intersecting structure and lithological contacts, resulting in irregular shaped, high-grade
shoots. In the east part of this area, the original morphology has been altered by several
decades of kaolin exploitation. This was mainly due to open-pit mining activities and it
left many abandoned quarries. In particular, the quarries of Monte Porceddu have not
been recovered and the possibility of recovering them depends on knowledge of the
relationship between a local geomorphology asset and the presence of water from
aquifers and surface erosion drainage. The aim of this paper is to suggest a method for
geomorphological characterization by using a photogrammetric survey technique, in
order to describe the landforms, and the representation of the abandoned excavations by
using three dimensional geoprocessing data thanks to a 3D software.

Keywords: abandoned mine, geomorphological characterization, photogrammetry,
digital surface model