DSpace
 

Researchspace >
General science, engineering & technology >
General science, engineering & technology >
General science, engineering & technology >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/3068

Title: Deriving optimal exploration target zones on mineral prospectivity maps
Authors: Debba, P
Carranza, EJM
Stein, A
Van der Meer, FD
Keywords: Simulated annealing
Epithermal deposits
Weights-of-evidence
Hyperspectral remote sensing
Hydrothermal alteration
Issue Date: Aug-2008
Publisher: Springer Berlin
Citation: Debba, P, Carranza, EJM, Stein, A et al. 2008. Deriving optimal exploration target zones on mineral prospectivity maps. Mathematical Geosciences, Vol. (2009), pp 26
Abstract: This paper describes a quantitative methodology for deriving optimal exploration target zones based on a probabilistic mineral prospectivity map. The methodology is demonstrated in the Rodalquilar mineral district in Spain. A subset of known occurrences of mineral deposits of the type sought was considered discovered and then used as training data, and a map of distances to faults/fractures and three band ratio images of hyperspectral data were used as layers of spatial evidence in weights-of-evidence (WofE) modeling of mineral prospectivity in the study area. A derived posterior probability map of mineral deposit occurrence showing non-violation of the conditional independence assumption and having the highest prediction rate was then put into an objective function in simulated annealing in order to derive a set of optimal exploration focal points. Each optimal exploration focal point represents a pixel or location within a circular neighborhood of pixels with high posterior probability of mineral deposit occurrence. Buffering of each optimal exploration focal point, based on proximity analysis, resulted in optimal exploration target zones. Many of these target zones coincided spatially with at least one occurrence of mineral deposit of the type sought in the subset of cross-validation (i.e., presumed undiscovered) mineral deposits of the type sought. The results of the study showed the usefulness of the proposed methodology for objective delineation of optimal exploration target zones based on a probabilistic mineral prospectivity map
Description: This is the author's version of the work. It is posted here by permission of Springer Berlin for your personal use. Not for redistribution
URI: http://hdl.handle.net/10204/3068
http://www.springerlink.com/content/b40783jqj46r2h88/
ISSN: 1874-8961
Appears in Collections:Logistics and quantitative methods
General science, engineering & technology

Files in This Item:

File Description SizeFormat
Debba_2009.pdf3.22 MBAdobe PDFView/Open
View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback