QUATERNARY GEOMORPHOLOGICAL DYNAMIC OF PERNAMBUCO-ALAGOAS STRUCTURAL SUMMIT, BORBOREMA HIGHLAND

Abstract

In many ways, the Quaternary period is substantially unique, climatic oscillations in this range have left more records in the geomorphological landscape than any other geological period, This work was mainly aimed at understanding how has the dynamic geomorphological Quaternary in an elevated region of the Borborema Highland, Northeast Brazil, the chosen work area, is located in the city of Garanhuns. Therefore, it made use of granulation techniques and morphoscopy for identification of grain transport and accommodation processes of sedimentary packages linked to dating Optically Stimulated Luminescence - OSL - to obtain the ages of these deposits and making coherent time alignment. The results, reflected environmental transitions to dry periods in the range of 30,000 years, while the entry time in the Holocene beckons for a longer period of moisture in morphodynamic processes. It was still possible to see that the cross between the local climate circulation and topographical constitution of the area facilitate microenvironments training exception to the regional context, as well as promoting the advancement of chemical processes, interspersing erosion. It can be concluded that the methods used were effective in their purpose.