This project aims to study the spacial distribution, structure, texture, mineralogy and origin of the Spodosols that occur on the Barreiras Formation and under grass vegetation ("campos nativos"), in midst of the Atlantic Forest preserved on the Linhares natural reserves (northeast of Espírito Santo state, southeast Brazil). The Spodosols - grass vegetation occurs as patches up to 500m wide, surrounded by Ultisols under typical Atlantic Forest. The approach proposed for their study is the integration between sedimentologic methods, as grain-size and heavy minerals analysis, and methods tipical of pedological researches, like geochemical, isotopic and micromorphological analysis. The focus of the heavy minerals analysis will emphasize the quantitative variation of the assemblage and the textural indications of chemical dissolution, along vertical soil profiles. It will provide an opportunity to evaluate and discuss the weathering effects on the in loco destruction of chemically unstable heavy minerals, as well their implications on the clay and solute generation, an important factor of pedogenesis.
News published in Agência FAPESP Newsletter about the scholarship: