@article{fdi:010062987,
  title = {{E}vidences for a {P}aleocene marine incursion in southern {A}mazonia ({M}adre de {D}ios {S}ub-{A}ndean {Z}one, {P}eru) [plus corrigendum]},
  author = {{L}outerbach, {M}. and {R}oddaz, {M}. and {B}ailleul, {J}. and {A}ntoine, {P}. {O}. and {A}dnet, {S}. and {K}im, {J}. {H}. and van {S}oelen, {E}. and {P}arra, {F}. and {G}erard, {J}. and {C}alderon, {Y}. and {G}agnaison, {C}. and {D}amste, {J}. {S}. {S}. and {B}aby, {P}atrice},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his article presents new biostratigraphic dating, facies analysis, organic geochemical data and {N}d-{S}r isotopic provenance from five outcrops of southern {A}mazonia ({MD}-85, {MD}-177 {MD}-184, {MD}-255 and {MD}-256) to document for the first time the presence of a shallow marine ingression in the {P}aleocene of southern {A}mazonia basin. {T}he co-occurrence of a selachian assemblage encompassing {P}otobatis sp., {O}uledia sp., and {P}ristidae indet with the ostracod {P}rotobuntonia sp. and the charophytes {P}eckichara cf. varians meridionalis, {P}latychara perlata, and {F}eistiella cf. gildemeisteri suggests a {P}aleocene age for the studied deposits (most likely {T}hanetian but potentially {D}anian). {F}ifteen fades have been recognized and have been grouped into three facies assemblages. {F}acies association {A} corresponds to the sedimentary filling of a tide-influenced meandering channel formed in the fluvial-tidal transition zone. {F}acies association {B} is related to more distal tidal-flats, little channelized tidal inlets and saltmarsh deposits. {F}acies association {C} corresponds to a stressed shallow marine environment such as a bay or a lagoon. {T}he delta {C}-13({TOC}) value (- 23.4%) of {MD}-184 is enriched in {C}-13 compared to the other samples suggesting the presence of substantial amounts of marine organic matter in {MD}-184. {T}he delta {C}-13({TOC}) values of samples from other outcrops ( - 27.3 to - 29.8%) indicate a mixed organic matter origin, from terrestrial to brackish environments. {T}he analyzed sediments have similar {N}d-{S}r isotopic compositions as those of the {C}enozoic sediments of the {A}ltiplano (epsilon {N}d(0) values from - 6.2 to - 10.7 and {S}r-87/{S}r-86 compositions from 0.712024 to 0.719026) indicating a similar volcanic source. {T}his multidisciplinary dataset documents the presence of a tide-dominated estuary sourced by the proto-{W}estem {C}ordillera debouching into a shallow marine bay during {P}aleocene times. {T}his transgression might be explained by subsidence created in response to the proto-{W}estern {C}ordillera loading. {S}imilar to {M}iocene marine incursions affecting the {P}ebas megawetland, {P}aleogene marine incursions in the {A}mazonian foreland basin associated with {A}ndean uplift may have played a role in the {N}eotropical biodiversity dynamics in favoring biogeographical isolation and promoting allopatric speciation for terrestrial organisms.},
  keywords = {{P}aleogene ; {M}arine incursion ; {A}mazonian foreland basin ; {T}idal deposits ; {M}adre de {D}ios basin ; {P}eru ; {PEROU} ; {AMAZONIE}},
  booktitle = {},
  journal = {{P}alaeogeography {P}alaeoclimatology {P}alaeoecology},
  volume = {414},
  numero = {},
  pages = {451--471 + corrigendum vol. 418,  386},
  ISSN = {0031-0182},
  year = {2014},
  DOI = {10.1016/j.palaeo.2014.09.027},
  URL = {https://www.documentation.ird.fr/hor/fdi:010062987},
}