@article{fdi:010062527,
  title = {3{D} modeling of the {A}shanti {B}elt, southwest {G}hana : evidence for a litho-stratigraphic control on gold occurrences within the {B}irimian {S}efwi {G}roup},
  author = {{P}errouty, {S}. and {L}indsay, {M}. {D}. and {J}essell, {M}ark and {A}illeres, {L}. and {M}artin, {R}. and {B}ourassa, {Y}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} three-dimensional model of the gold-rich {P}aleoproterozoic {A}shanti {G}reenstone {B}elt has been built with a "hybrid" geological modeling method using {G}eomodeller and {G}ocad, then inverted using {VP}mg software. {T}he model helps to identify the main regional-scale controls leading to abundant gold mineralization in the southeast of the belt by highlighting the lithological distribution and geometry of geological structures. {T}he three-dimensional geological model shows that 85% of gold occurrences in the {A}shanti {G}reenstone {B}elt are proximal to a specific tholeiitic metabasaltic horizon "{BV}1". {T}his result is noteworthy given that the relatively thin, 300 m thick, {BV}1 layer represents only 10%, by volume, of the modeled {S}efwi {G}roup stratigraphy. {A} map of distance between the topography and the {BV}1 layer is produced and identifies areas showing a high probability to host gold deposits in the southeast of the {A}shanti {B}elt. {P}ossible structural controls performed by the {BV}1 tholeiitic metabasaltic rocks on the location of gold occurrences are discussed, and we hypothesize that the {BV}1 layer acted as a mineralization trap or source of gold. {B}oth hypotheses agree with examples from the literature and explain the observed distribution of the mineralized sites.},
  keywords = {{G}eological modeling ; {G}eomodeller ; {G}ocad ; {VP}mg ; {G}ravity inversions ; {A}shanti {B}elt ; {G}hana ; {GHANA}},
  booktitle = {},
  journal = {{O}re {G}eology {R}eviews},
  volume = {63},
  numero = {},
  pages = {252--264},
  ISSN = {0169-1368},
  year = {2014},
  DOI = {10.1016/j.oregeorev.2014.05.011},
  URL = {https://www.documentation.ird.fr/hor/fdi:010062527},
}