O pioneirismo do zoneamento palinoestratigráfico de Daemon e Quadros (1970): um marco no conhecimento estratigráfico da Bacia do Paraná

Pioneering palino-stratigraphic zoning by Daemon and Quadros (1970): a benchmark in stratigraphic knowledge in the Paraná Basin

Abstract

This paper presents an analytical view of the palynostratigraphy of the Pennsylvanian-Permian interval of the Paraná Basin, emphasizing the importance of the contributions by R. F. Daemon and L. P. de Quadros, published in 1970. The main characteristics of this zonal scheme are presented, with emphasis on its operability in geological studies on the relative ages and correlation. The proposed intervals correspond to stratigraphical units interpreted as meaning “time-rock”, which are traceable for short and long distances, and embracing various depositional environments. Because they occur in distinct lithostratigraphical units, they are significant for their potential in palaeogeographic reconstructions. The importance in stratigraphical chart constructions for the basin is highlighted, as well as the exposure of some modern stratigraphic concepts used by the authors, innovations at that time, such as the attention to certain biostratigraphic criteria and the recognition of the maximum flooding surfaces. The current zonal scheme is presented, with the due integration and biochronostratigraphical updating. Furthermore, the main goals for studies on this theme in the near future are shown.