@article{fdi:010019251,
  title = {{L}ake-level and salinity reconstruction from diatom analyses in {Q}uillagua formation (late {N}eogene, {C}entral {A}ndean forearc, {N}orthern {C}hile)},
  author = {{B}ao, {R}. and {S}aez, {A}. and {S}ervant {V}ildary, {S}imone and {C}abrera, {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} sedimentary and micropaleontological study of the {Q}uillagua formation provides a detailed paleohydrological reconstruction of the lacustrine system which occupied the present-day hyperarid {Q}uillagua-{L}lamar fore-arc {B}asin ({N}orthern {C}hile) from lattermost {M}iocene (5.8 plus or minus 0.4 {M}a) to {E}arly {P}liocene times. {D}iatom and lithofacies analyses were carried out in two correlated stratigraphic sections of the lacustrine system. {T}he {Q}uebrada {T}emblor section is located at the southern margin of the ancient lake and is directly influenced by the freshwater inputs of a northward flowing fluvial system draining the {P}recordillera and {C}alama regions. {T}he {C}erro {M}ogote section occupies a western marginal location in the northern zone sheltered from direct fluvial inputs from the south but subjected to the activity of the alluvial fan systems of the {C}oastal {R}ange. {A} mostly shallow oligosaline waterbody occupied the basin during the interval studied, though with fluctuations in salinity and the extent of the inner, open waters. {T}he southern margin sector - represented by {Q}uebrada {T}emblor - had, in general terms, a plaustrine oligosaline character with almost freshwater pulses mediated in this case by the activity of the terminal alluvial fan zones. {P}aleohydrological evolution of the basin was strongly conditioned not only by shifts in the climatic-tectonic system but by variatins in the local hydrological parameters. {F}our hierarchical orders of variability in the lake level of the basin were distinguished both by stratigraphic analysis of lithofacies and from changes undergone by the diatom record. {S}trong intrasample mixing of diatoms of incompatible salinity spectra and the presence of fine laminated lacustrine facies in some terms define the highest order short-term intra- or inter-annual pulses experienced by the lacustrine system (higher than 6th order)... ({D}'apr{\`e}s r{\'e}sum{\'e} d'auteur)},
  keywords = {{FORMATION} {SUPERFICIELLE} ; {PALEOLIMNOLOGIE} ; {PALEOHYDROLOGIE} ; {DIATOMEE} ; {SALINITE} ; {BATHYMETRIE} ; {TRANSGRESSION} ; {REGRESSION} ; {PALEOENVIRONNEMENT} ; {PALEOCLIMAT} ; {NEOGENE} ; {MIOCENE} ; {PLIOCENE} ; {CHILI} ; {QUILLAGUA} {LAMARA} {BASSIN}},
  booktitle = {},
  journal = {{P}alaeogeography, {P}alaeoclimatology, {P}alaeoecology},
  volume = {153},
  numero = {},
  pages = {309--335},
  ISSN = {0031-0182},
  year = {1999},
  DOI = {10.1016/{S}0031-0182(99)00066-8},
  URL = {https://www.documentation.ird.fr/hor/fdi:010019251},
}