Bogotá “Savanna”

Abstract

The “Sabana de Bogotá” high plain, one of the places where the geological and geomorphologic evolution of the northernmost Andes, from Jurassic to recent, is best evidenced. Part of this long evolution was preserved in the landforms, in the lithostratigraphic register and in residual soils found around Bogotá. The “Sabana de Bogotá” highland is a fluvio-lacustrine fill deposited between N and NE oriented folds and basins which formed during the successive uplift phases of the Eastern Cordillera and constitute now the Bogota protective hills and mountains. Incased between these ridges are lacustrine and fluvial plains formed locally by 200–600 m thick layers of predominantly clayey deposits intercalated with minor sands and gravels and some peat levels, which have permitted to unravel the recent regional evolution.