@article{fdi:010057102,
  title = {{C}rustal-scale transcurrent shearing in the {P}aleoproterozoic {S}efwi-{S}unyani-{C}omoe region, {W}est {A}frica},
  author = {{J}essell, {M}ark and {A}mponsah, {P}. {O}. and {B}aratoux, {L}enka and {A}siedu, {D}. {K}. and {L}oh, {G}. {K}. and {G}anne, {J}{\'e}r{\^o}me},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {P}aleoproterozoic {S}efwi-{S}unyani-{C}omoe region that straddles the {G}hana-{I}vory {C}oast border in {W}est {A}frica has been characterised as resulting from a combination of compression and simple shear with leucogranite intrusion either being prior to the compression or synchronous with late shearing. {T}he analysis of regional magnetic datasets combined with field observations allows us to better define the geometry of the major lithostratigraphic packages and their structural contacts in this region.{T}his analysis reveals a series of elongate rounded leucogranite intrusions enveloped by deformed metasediments. {R}ecent finite element modelling of two-phase aggregates has shown that we can analyse the geometry of these systems both in terms of their finite deformation and their mechanical contrast. {W}e interpret the geometries we see in the {S}efwi-{S}unyani-{C}omoe region as reflecting the activity of a major crustal deformation zone which was dominated by simple shear. {T}he comparison with our modelling suggests a finite shear strain of approximately 5 gamma, which in turn implies a lateral displacement of 400 km parallel the {S}efwi {G}reenstone {B}elt, which places {S}outhern {G}hana ({E}o{G}hana?) near eastern {B}urkina {F}aso prior to deformation. {O}ur analysis also suggests that the leucogranites were already acting as more rigid bodies during the shearing, suggesting that their emplacement was predominantly pre-kinematic.},
  keywords = {{P}alaeoproterozoic ; {S}tructural analysis ; {T}ranscurrent shearing ; {G}hana ; {I}vory {C}oast},
  booktitle = {},
  journal = {{P}recambrian {R}esearch},
  volume = {212},
  numero = {},
  pages = {155--168},
  ISSN = {0301-9268},
  year = {2012},
  DOI = {10.1016/j.precamres.2012.04.015},
  URL = {https://www.documentation.ird.fr/hor/fdi:010057102},
}