@article{PAR00011025,
  title = {{M}aking the link between geological and geophysical uncertainty : geodiversity in the {A}shanti {G}reenstone {B}elt},
  author = {{L}indsay, {M}. {D}. and {P}errouty, {S}. and {J}essell, {M}ark and {A}illeres, {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he process of 3-{D} modelling forces the operator to consider data collection and processing error, while simultaneously making assumptions about geology during interpretation, to arrive at the most likely or logical geological scenario. {T}hese kinds of ambiguities lead to situations where multiple model realizations can be produced from a single input data set. {D}ecisions are typically made during the modelling process with the aim of reducing the number of possible models, preferably to produce a single geological realization. {T}hese types of decisions involve how input data are processed and what data are included, and are always made without complete knowledge of the system under study. {T}his regularly, if not always, results in natural geometries being misrepresented by the model, which can be attributed to uncertainty inherent in the modelling process. {U}ncertainty is unavoidable in geological modelling as complete knowledge of the natural system is impossible, though we use many techniques to reduce the amount introduced during the modelling process. {A} common technique used to reduce uncertainty is geophysical forward modelling, and the misfit between the calculated and observed response provides a means to gauge whether changes in model architecture improve or degrade the quality of the model. {U}nfortunately, geophysical data are ambiguous and provide a non-unique solution, with different model geometries able to produce the same geophysical response. {W}e propose a process whereby multiple models, collectively known as the 'model suite', are produced from a single data set that allows an exploration of geological model space. {V}arious 'geodiversity' metrics have been developed to characterize geometrical and geophysical aspects of each model. {G}eodiversity measurements are combined into multivariate analysis to reveal relationships between metrics and define the boundaries of the geological possibility. {A} previous study using geodiversity metrics on the {G}ippsland {B}asin is extended here by including geophysical metrics. {W}e use the {A}shanti {G}reenstone {B}elt, southwestern {G}hana in {W}est {A}frica, as a case study to assess the usefulness of the technique. {A} critical assessment of the 3-{D} model is performed and aspects of the model space are identified that could be of interest to gold explorers.},
  keywords = {{I}mage processing ; {S}patial analysis ; {G}ravity anomalies and {E}arth structure ; {A}frica ; {GHANA}},
  booktitle = {},
  journal = {{G}eophysical {J}ournal {I}nternational},
  volume = {195},
  numero = {2},
  pages = {903--922},
  ISSN = {0956-540{X}},
  year = {2013},
  DOI = {10.1093/gji/ggt311},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00011025},
}