@article{PAR00022738,
  title = {{C}rustal thickness, depth to the bottom of magnetic sources and thermal structure of the crust from {C}ameroon to {C}entral {A}frican {R}epublic : preliminary results for a better understanding of the origin of the {B}angui {M}agnetic {A}nomaly},
  author = {{T}choukeu, {C}. {D}. {N}. and {B}asseka, {C}. {A}. and {D}jomani, {Y}. {P}. and {R}ousse, {S}onia and {E}tame, {J}. and {L}lubes, {M}. and {S}eoane, {L}. and {M}bang, {C}. {S}. and {Y}omba, {A}. {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {B}angui {M}agnetic {A}nomaly ({BMA}) is one of the largest magnetic anomalies in the world whose origin is still not known. {T}his research investigated the crustal thickness, {C}urie depths and thermal structures in the {C}entral {A}frican sub-regions - {C}ameroon, {C}entral {A}frican {R}epublic and adjacent countries - which are largely characterized by the {B}angui {M}agnetic {A}nomaly. {T}o achieve a better understanding and clearer idea of the location of the possible sources of the {BMA}, analyses of geothermal structures were conducted. {T}wo potential methods were used: gravity to evaluate the crustal thickness and magnetics for geothermal analysis. {S}pectral analysis of gravity data shows that crustal thickness range between 14 and 55 km. {T}he highest depths were found in {C}entral {A}frican {R}epublic. {T}he lower values of crustal thickness were obtained in {S}outh-{C}had basin with a minimum of roughly 14 km. {G}eothermal analysis is carried out using the {C}urie point depth, thermal gradient and heat-flow evaluations. {T}he results show that the {BMA} is related to a thick crust of roughly 40 km. {D}epth to the bottom of possible sources does not exceed the lower crust. {T}he mean {C}urie point depth estimated is 38 km with an error of +/- 2 km. {G}eothermal results also show the difference in the thermal behaviour between the crust in the {P}an {A}frican and {P}recambrian domain. {T}he mobile zone which constitutes the {P}an {A}frican domain is associated with a thin crust of high heat-flow values of 65 m{W}/m(2). {H}owever, the {P}recambrian domain beneath the {BMA} is associated with a thick crust with lower heat-flow values (roughly 45 m{W}/m(2)). {T}he difference between crustal thickness and {C}urie point depths shows that all the sources of the {BMA} are crustal. {T}he present results are in favour of a geological origin for the {B}angui {M}agnetic anomaly.},
  keywords = {{C}rustal thickness ; {G}eothermal structures ; {C}urie depth ; {C}ameroon ; {C}entral {A}frican {R}epublic ; {B}angui magnetic anomaly ; {CAMEROUN} ; {CENTRAFRICAINE} {REPUBLIQUE}},
  booktitle = {},
  journal = {{J}ournal of {A}frican {E}arth {S}ciences},
  volume = {179},
  numero = {},
  pages = {104206 [21 p.]},
  ISSN = {1464-343{X}},
  year = {2021},
  DOI = {10.1016/j.jafrearsci.2021.104206},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00022738},
}