RELACIÓN ENTRE LA OCURRENCIA DE PROCESOS DE REMOCIÓN EN MASA Y LA TIPOLOGÍA DE MATERIALES GEOLÓGICOS Y COBERTURAS DE LA TIERRA, EN LA MICROCUENCA DE LA QUEBRADA DOSQUEBRADAS, MUNICIPIO DE DOSQUEBRADAS, RISARALDA, COLOMBIA
THE RELATIONSHIP BETWEEN THE OCCURRENCE OF MASS REMOVAL PROCESSES AND THE TYPOLOGY OF GEOLOGICAL MATERIALS AND COVERAGE OF THE EARTH, IN THE MICOROBASIN OF THE DOSQUEBRADAS STREAM, MUNICIPALITY OF DOSQUEBRADAS, RISARALDA, COLOMBIA

Author(s): Alejandro Alzate Buitrago, Gabriel Cruz Cerón
Subject(s): Geography, Regional studies
Published by: Wydawnictwa Uniwersytetu Warszawskiego
Keywords: mass removal processes; vegetation cover; geological materials susceptibility to landslides
Summary/Abstract: Establishing the relationship between the occurrence of mass removal processesand the typology of geological materials and land cover, based on the diagnosticof events that occurred in the municipality of Dosquebradas, implied the consultation ofthe historical record of landslides and the realization of the inventory of mass removalprocesses in the territory of infl uence of the microbasin of the Dosquebradas stream. Thisaction allowed the identifi cation, location, diagnosis and descriptive statistical treatmentof the inventoried sites in order to defi ne some relationships of interest and confi rm thesubstantial role that vegetation and geological materials play in the stability of land. Someof the most representative fi ndings suggest that for the particular case of the microbasinof the Dosquebradas stream, the geological units most susceptible to the occurrenceof erosive events are the metamorphic rocks of the Kiea unit, the rocks and residualsoils of the Kvb volcanic unit, and deposits of recent alluvial origin. In addition, it wasverifi ed that the coverage with greater susceptibility to the occurrence of mass removalprocesses is that of grasses and stubble with some consociations and that together withhighly susceptible geological materials, they defi ne territorial zones with high threat dueto landslides.

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