BASALTIC VOLCANIC ROCKS IN LURUACO REGION. ATLANTICO DEPARTMENT. COLOMBIA

Abstract

Aproximately Sixty kilometers Southwest of Barranquilla there is a massif of mountains whose highest peaks are 450 meters above the sea level. The morphology of that massif, is completely different of other ranges in Atlántico department and North of Bolivar. It has an elliptic outline. It presents a dendritic drainage net. The topographic relief is completely different of the narrow elongate ranges of the Caribbean area West of Magdalena river. Those ranges are exposures of sedimentary rocks. The relief of Luruaco is the exposure of igneous rocks. The contour of the volcanic building is clearly visible in the conventional aerial photographies and images of satellite (Annexed 1. Images 1, 2 and 3).