Inventario de procesos de remoción en masa - Estudio base para la zonificación del Parque Provincial Aconcagua

MOREIRAS S.M., LENZANO M.G., RIVEROS N., DÍAZ F.,Y LENZANO L

Malargüe – Mendoza

Jornada; E- ICES 4. International Center for Earth Sciences.; 2008

In framework of research project PIP 2006-5759 - marco de  referencia regional y aportes al conocimiento de la geodinámica y los modelos ionosféricos (responsible researcher Luis Lenzano)- landslides affecting the basins of Horcones and Las Vacas rivers (Cordillera Principal) were identified by photo-interpretation (scale 1:50,000). These geodinamic processes movilising huge material volumes were included in a inventory map where rockfalls, debris flows and debris flow zone depending on deposit sizes, slides, slumps and complex events were distiguished according to the type of movement and the involved material. Obtained data were contrasted by field inspections. During the field session carried out in March 2008, the Horcones river was studied from Horcones camp (2960 m) to Plaza de Mulas camp base (4370 m). As well Horcones inferior gully was visited where Plaza Francia (4200 m) is located being used as a camp base for climbing the south wall of Aconcagua peak (6962 m.s.n.m.). Then, helicopter flights over the study area allowed to verify the activity grade of landslides and their related hazard. Extra funds coming from two further research project, PICT 2006-02220 and PME 2006-02703 destinated to get proper equipment for regional geomatic and geodinamic development, will let to continue these studies. Establishisment of main triggering mechanism and estimation of displacement velocity of active processes is also contemplated. This study is fundamental for managment planning and zonation of Aconcagua Provincial Park, a natural protected area of 71000 ha and international tourist centre with more than 7000 incomings per year.