Now showing items 41-42 of 42
Biostratigraphy and paleoecology of an unusual palynological record from the Aquidauana Formation, Late Pennsylvanian of Paraná Basin
(Anais da Academia Brasileira de Ciências, 2015-06-01) [Artigo]
The Aquidauana Formation is a Permo-Carboniferous sedimentary unit, widely stratigraphicaly distributed in the northwestern and northern portions of the Paraná Basin. However, little paleontological data is available from ...
Integration of geophysical methods in the study of acid drainage in uranium mining waste
(Revista Brasileira de Geofisica, 2018-01-01) [Artigo]
Among the potential environmental impacts in mining activities, acid mine drainage (AMD) is a relevant problem caused by reactive minerals, such as sulfides, due to their exposure to the surface conditions. This is the ...