Caracterização de sedimentos turfosos no refúgio de vida silvestre dos Campos de Palmas, Estado do Paraná, Brasil

Abstract

Climate variability has become a prevalent pattern in Earth's history on the scale of tens of thousands of years. The Quaternary period that began at 2.58 Ma and continues until today is marked by several global oscillations between warmer and colder conditions. Thus, the work aims, based on the analysis of Quaternary sediments, to find signs that point to climate changeor not. Thus, this study had as main objective the characterization of the peat sediments present in the Conservation Unit Refúgio de Vida Silvestre dos Campos de Palmas, with the purpose of providing advances for the paleoenvironmental understanding of the area in which the studied stratigraphic section is located. The samples of peat sediments that were analyzed are true archives of the evolution of the environment around them, as they were taken from a peat bog that is extremely sensitive to changes in precipitation and temperature patterns. To achieve the proposed objectives, bibliographical research was carried out on the subject, the physical characterization of the materials, which involved the observation of properties such as color and texture of the sediments, granulometric analysis, and the organic matter content of each sample. The results of the analyzes showed that the peat bog where the stratigraphic section was taken is a low-energy depositional environment with a lot of organic matter and with a predominance of silt and clay in its composition. The data obtained will provide important contributions to understanding the evolutionary history of this environment and will offer subsidies for research that has been under development in the study area since 2019.