PRE-CRETACIC REGIONAL STRUCTURING OF IBIAPABA, NORTHWEST OF THE STATE OF CEARÁ

Abstract

Ibiapaba has gaps in its natural history and, therefore, there is a need for greater knowledge about its geomorphological evolution. An important gap is the knowledge of the structure of the geological substrates of the reliefs that compose it in the portion verified in the northwest region of Ceará. More than passive elements in the landscape, the lithological, tectonic and chronostratigraphic aspects, even old ones, influence and even condition the geomorphological arrangement on a regional scale, which occurs in Ibiapaba. Thus, the main objective of this work is to analyze the geological conditioning of the regional structure of pre-Cretaceous age in the geomorphology of Ibiapaba in its northern portion, northwestern Ceará. Methodologically, the theoretical assumptions of geomorphological science were used, with an emphasis on morphostructural analysis. In turn, the technical contingent of the research is divided into cabinet stages, with detailed bibliographic and cartographic surveys, field surveys and integrated analysis of all data in the laboratory stage, with an emphasis on thematic mappings Ibiapaba and region. The results achieved allow an analysis of the geological conditions of pre-Cretaceous age for the current geomorphological picture of Ibiapaba, a basic condition for the knowledge of the relief and its evolutionary aspects.