Now showing items 1-10 of 2926
Geostatistical modeling of the geological uncertainty in an iron ore deposit
This paper addresses the problem of quantifying the joint uncertainty in the grades of elements of interest (iron, silica, manganese, phosphorus and alumina), loss on ignition, granulometry and rock types in an iron ore ...
Geology of guapiara topographic sheet in 1:50.000.Geologia da folha topográfica guapiara na escala 1:50.000.
Geology of Guapiara Topographic Sheet in 1:50.000. The region of Guapiara Topographic Sheet is located in the extreme South of the São Paulo state and it is comprised in the central portion of the Mantiqueira Province in ...
Incorporating the uncertainty in geological boundaries into mineral resources evaluation
Geological modelling is a key step prior to grade estimation in a mineral deposit and consists of a deterministic partitioning of the deposit into sub-domains called 'geological units', each with relatively homogeneous ...
Evidence for a correlation between total lead concentrations in soils and the presence of geological faults
The emission of radon gas in regions of geological faults, during the radioactive decay of uranium and thorium, results in the formation of lead isotopes 210Pb, 208Pb, 207Pb and 206Pb. As a consequence, the lead contamination ...
Cursos de geologia: expansão, interiorização e consolidação do ensino de geologia no brasil
A short time after the creation of the first Geology courses in Brazil (in 1957 with the pioneers in the University of São Paulo and in the Federal Universities of Ouro Preto, Pernambuco and Rio Grande do Sul, and then in ...