@article{fdi:010066192,
  title = {{P}ost-obduction carbonate system development in {N}ew {C}aledonia ({N}epoui, {L}ower {M}iocene)},
  author = {{M}aurizot, {P}. and {C}abioch, {G}uy and {F}ournier, {F}. and {L}eonide, {P}. and {S}ebih, {S}. and {R}ouillard, {P}. and {M}ontaggioni, {L}. and {C}ollot, {J}. and {M}artin-{G}arin, {B}. and {C}haproniere, {G}. and {B}raga, {J}. {C}. and {S}evin, {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{F}or the first time, depositional models of {L}ower {M}iocene carbonate systems from {N}ew {C}aledonia ({S}outhwest {P}acific) are proposed, on the basis of a sedimentological and paleoenvironmental study of both cores and outcrops. {I}n the {N}epoui area, two distinct stages of carbonate ramp development ({A}quitanian {L}ower {N}epoui and {B}urdigalian {U}pper {N}epoui carbonate systems), separated by a phase of siliciclastic deltaic deposition, are evidenced. {T}he post-obduction marine transgression of the {W}estern {N}ew {C}aledonian margin occurred at approximately 24 {M}a and is characterized by the development of an aggrading foraminiferal-coralline algal-scleractinian ramp system ("{C}hapeau {C}hinois {L}imestone") during the early {A}quitanian (24-23 {M}a). {A} retrogradational event is evidenced at approximately 23 {M}a followed by the development of a shallowing upward carbonate unit ({O}perculina "{G}reen {S}ands" and {X}uudhen {L}imestone) during the late {A}quitanian. {T}his unit is topped by a major erosional unconformity overlain by conglomeratic deposits ("{P}indai conglomerates"), and interpreted to record a significant uplift at around 21-19 {M}a. {D}uring the {B}urdigalian, a marine transgression occurred at around 19 {M}a, followed by the development of a low-angle carbonate ramp or open platform ("{N}epil {L}imestone") up to the late {B}urdigalian (19-17 {M}a). {I}n both {A}quitanian and {B}urdigalian carbonate ramps, extensive sea-grass meadows are shown to have colonized the proximal ramp environments within the euphotic zone. {I}n the {A}quitanian carbonate ramp ({L}ower {N}epoui {F}ormation), carbonate production within sea-grass meadows is dominated by large benthic foraminifera, together with red algae and sparse scleractinians. {M}esophotic environments are characterized by large and flat lepidocyclinids, rhodoliths and platy corals whereas in deeper oligophotic settings significant carbonate producers consist mainly of large and flat benthic foraminifera. {I}n the {B}urdigalian carbonate ramp ({U}pper {N}epoui {F}ormation), porcellaneous foraminifera thriving in sea-grass meadows together with red algae and scattered coral colonies characterize the carbonate production in the euphotic zone. {A}ntecedent topography is regarded as a major factor controlling the extension of carbonate systems at regional and local scale. {T}he thickness and development pattern of {L}ower {M}iocene deposits from {N}epoui are dominantly controlled by tectonic subsidence. {F}inally, extensive sea-grass development promoted the dominance of foralgal carbonate production within the euphotic zone.},
  keywords = {{C}arbonates ; {P}aleo-environments ; {S}ea-grass ; {M}iocene ; {N}ew {C}aledonia ; {S}outh {P}acific ; {NOUVELLE} {CALEDONIE} ; {PACIFIQUE} {SUD}},
  booktitle = {},
  journal = {{S}edimentary {G}eology},
  volume = {331},
  numero = {},
  pages = {42--62},
  ISSN = {0037-0738},
  year = {2016},
  DOI = {10.1016/j.sedgeo.2015.11.003},
  URL = {https://www.documentation.ird.fr/hor/fdi:010066192},
}