@article{fdi:010077868,
  title = {{S}tructure of the {P}aleoproterozoic {K}edougou - {K}enieba inlier ({S}enegal-{M}ali) deduced from gravity and aeromagnetic data},
  author = {{D}iallo, {M}. and {B}aratoux, {L}enka and {D}ufrechou, {G}. and {J}essell, {M}. {W}. and {V}anderhaeghe, {O}. and {L}y, {S}. and {B}aratoux, {D}avid},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {K}edougou-{K}enieba {I}nlier ({KKI}) corresponds to a window through {P}aleoproterozoic terranes of the {W}est {A}frican {C}raton ({WAC}). {T}his study presents, first of all, an interpretation of a regional {B}ouguer gravity map (14 degrees {W}-9 degrees {W}, 11{N}-16 degrees {N}) of the {KKI} and then introduces a new litho-structural map of the {M}alian part of the {KID} using aeromagnetic data (12 degrees 0'{W}-10 degrees 80'{W}, 12 degrees 0'{N}-14 degrees 50'{N}). {T}he {KKI} is limited to the west by a negative gravity anomaly forming a 30-100 km wide corridor, oriented {N}-{S} to {NNE}-{SSW}, and correlated to the {V}ariscan {M}auritanides orogenic belt. {W}est of this belt, the {M}esozoic to {C}enozoic sedimentary deposits are marked by the highest positive anomaly of the region, attributed either to the presence of mafic rocks at intermediate to deep crustal levels or to a shallower {M}oho depth. {W}ithin the {KKI}, moderately positive to negative anomalies are correlated with exposed plutonic and mafic to intermediate metavolcanic rocks. {G}ravity data also reveal (i) two north-west trending lineaments attributed to crustal-scale shear zones, (ii) three north-east trending lineaments marked by gravity anomalies sub-parallel to the known {B}issau-{K}idira-{K}ayes {F}ault {Z}one, and named {K}ayes, {K}edougou-{K}enieba, and {S}outh {S}hear {Z}ones, respectively, (iii) and the extension to the south of the known {M}auritanides {B}elt {T}hrust. {T}he local aeromagnetic map of the {M}alian part of the {KKI} discriminates the {M}ako metavolcanic belt with granitic intrusions in the west characterized by heterogeneous anomalies, from the {K}ofi metasedimentary series delineated by magnetic lows in the east. {ESE}-{WNW} to {ENE}-{WSW}-trending alternation of magnetic anomalies in the metavolcanic and metasedimentary rocks are attributed to pervasive structures associated with ductile deformation. {T}he {S}enegalo-{M}alian {S}hear {Z}one is marked at the regional scale by deflection of the geophysical lineaments but is not expressed by any offset of identified structures or lithological contacts.},
  keywords = {{A}irborne magnetics ; {G}ravity ; {P}aleoproterozoic ; {W}est {A}frica ; {M}ali ; {S}tructural evolution ; {MALI}},
  booktitle = {},
  journal = {{J}ournal of {A}frican {E}arth {S}ciences},
  volume = {162},
  numero = {},
  pages = {103732 [16 ]},
  ISSN = {1464-343{X}},
  year = {2020},
  DOI = {10.1016/j.jafrearsci.2019.103732},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077868},
}