A formação das marmitas como indicador paleoclimático: o estudo de caso do Riacho Olho D`água em Nazarezinho-PB.

Abstract

Throughout the Quaternary period were recorded occurences of intercalated climatic alternations between glacial and interglacial stages afact that made some scholars to develop the theory of Reductions and Forest Refuges, in order to prove such maked evidence by the paleoecological changes in the evolutionary dynamics of the landscape. The present work aims to analyze the paleoclimatic evidences in the intertropical zone of the globe from the studies of the formation of the kettles in the Riacho Olho D‟água in the municipaly of Nazarezinho in the state of Paraíba, Brazil. As theoretical-methodological supports this research is responsible for making a bibliographical survey about the proposed theme; as well as analyzing it in the empirical way through fieldwork with the execution of the photographic record and elaboration of maps. Specifically in the area of study in was possible to identify the from the observation of the kettles, the occurrence of a more humid environment with the perennial and voluminous drainage allowed the overlapping of the dreinage causing the formation of the water gap, besides the formation of the kettles. For understanding the current semi-arid landscape, it necessary to understand the various physiognomic currents of the landscape where through this reading it will be possible to interpret the details of the local landscape evolution.