@article{fdi:010067631,
  title = {{L}ake {C}had sedimentation and environments during the late {M}iocene and {P}liocene : new evidence from mineralogy and chemistry of the {B}ol core sediments},
  author = {{M}oussa, {A}. and {N}ovello, {A}. and {L}ebatard, {A}. {E}. and {D}ecarreau, {A}. and {F}ontaine, {C}. and {B}arboni, {D}. and {S}ylvestre, {F}lorence and {B}ourles, {D}. {L}. and {P}ailles, {C}. and {B}uchet, {G}. and {D}uringer, {P}. and {G}hienne, {J}. {F}. and {M}aley, {J}. and {M}azur, {J}. {C}. and {R}oquin, {C}. and {S}chuster, {M}. and {V}ignaud, {P}. and {B}runet, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his study presents mineralogical and geochemical data from a borehole drilled near the locality of {B}ol (13 degrees 27'{N}, 14 degrees 44'{E}), in the eastern archipelago of the modern {L}ake {C}had ({C}had). {S}amples were taken from a similar to 200 m long core section forming a unique sub-continuous record for {C}entral {A}frica. {A}mong these samples, 25 are dated between 6.4 and 2.4 {M}a. {D}ominant minerals are clays (66% average) mixed with varying amounts of silt and diatomite. {T}he clay fraction consists of {F}e-beidellite (87% average), kaolinite, and traces of illite. {C}lay minerals originate from the erosion of the vertisols that surrounded the paleolake {C}had. {S}edimentological data indicate that a permanent lake (or recurrent lakes) existed from 6.7 until 2.4 {M}a in the vicinity of {B}ol. {B}y comparison with modern latitudinal distribution of vertisols in {A}frica the climate was {S}udanian-like. {C}hanges in the sedimentation rate suggest a succession of wetter and dryer periods during at least six million years in the region during the critical time period covering the {M}iocene-{P}liocene transition.},
  keywords = {{L}ake {C}had ; {M}iocene-{P}liocene ; {F}e-beidellite ; {V}ertisol ; {S}edimentation rate ; {TCHAD}},
  booktitle = {},
  journal = {{J}ournal of {A}frican {E}arth {S}ciences},
  volume = {118},
  numero = {},
  pages = {192--204},
  ISSN = {1464-343{X}},
  year = {2016},
  DOI = {10.1016/j.jafrearsci.2016.02.023},
  URL = {https://www.documentation.ird.fr/hor/fdi:010067631},
}