Measure of uncertainty in regional grade variability

Tutmez B., Kaymak U.

IFSA 2007 World Congress, Cancun, Mexico, 18 - 21 June 2007, vol.41, pp.511-512, (Full Text) identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 41
  • Doi Number: 10.1007/978-3-540-72432-2_52
  • City: Cancun
  • Country: Mexico
  • Page Numbers: pp.511-512
  • Inonu University Affiliated: Yes

Abstract

Because the geological events are neither homogeneous nor isotropic, the geological investigations are characterized by particularly high uncertainties. This paper presents a hybrid methodology for measuring of uncertainty in regional grade variability. In order to evaluate the fuzziness in grade values at ore deposit, point cumulative semimadogram (PCSM) measure and a metric distance have been employed. By using the experimental PCSMs and their linear models, measures of fuzziness have been carried out for each location. Finally, an uncertainty map, which defines the regional variation of the uncertainty in different categories, has been composed.