The Lahars of the South-East slope of Mount Cameroon: geological study, economic interest and impacts of their exploitation on the environment

Mount Cameroon is the site of explosive eruptions with emission ash, slag and lava flows. Mudflows, known as Lahars, can also be observed. These Lahars are mainly found in lower part south-eastern slope. The outcrops observed on this flank show that these very extensive avalanches volcanic material, which flowed down slopes volcano after eruptions. different separated by pyroclastic products lahars rest. components generally black or grey basalts. main granulometric characteristic deposits their heterometry. size material varies from a few meters to clay fraction. Large concentrations mineable watercourses. materials exploited order produce aggregates for civil engineering. This exploitation has consequences immediate environment. In addition climatic factors, several parameters have influenced mobilities emplacement slope Cameroon: slope, volume thickness deposits, nature physico-hydric characteristics deposits. persistence strombolian particularly rainy context predispose it other future episodes lahar flow.