@article{fdi:010065497, title = {{T}he reef platform of {M}artinique : interplay between eustasy, tectonic subsidence and volcanism since {L}ate {P}leistocene}, author = {{L}eclerc, {F}. and {F}euillet, {N}. and {P}erret, {M}. and {C}abioch, {G}uy and {B}azin, {S}. and {L}ebrun, {J}. {F}. and {S}aurel, {J}. {M}.}, editor = {}, language = {{ENG}}, abstract = {{R}eef positions record the interaction between eustasy and tectonics, and have been used worldwide to characterize vertical deformations of upper-plates at different time-scales and constrain the seismic behavior of megathrusts. {A}long the {L}esser {A}ntilles volcanic arc, high-resolution marine geophysical data were collected on the 2-20 km wide eastern {M}artinique reef platform to reconstruct its stratigraphic and morphologic history, and understand the influence of local normal faulting, volcanism and plate-scale subduction processes on {H}olocene and {L}ate {P}leistocene reef development. {T}he subsiding {M}artinique platform's stratigraphy is composed of multiple superimposed sea-level highstand deposits separated by subaerial exposure surfaces of sea-level low stands. {T}he carbonate platform consists of two laterally-extensive carbonate units (unit {U}-2 overlying unit {U}-3) that extend to the platform edge to a depth of -95 m {MSL} (mean sea level), and form two morphologic terraces, {M}2 and {M}3 respectively. {T}he landward portion of unit {U}-2 is partially overlain between 0 and -60 m {MSL} by the living reef tract {U}-1. {T}he current reef is composed of a landward fringing reef, a lagoon and a seaward barrier reef, the latter forming a double-bank barrier around the {C}aravelle {P}eninsula. {I}n near-shore multi-channel seismic profiles, a distinct reflector at similar to-35 m {MSL} probably a subaerial exposure surface {E}l, separates the reef sequence formed during the last transgression from a {P}leistocene fossil reef tract forming unit {U}-2. {O}ffshore of {M}ount {P}elee volcano ({L}ate {P}leistocene), the {H}olocene reef did not develop above unit {U}-2, whose upper surface is incised by channels and apparent sinkholes. {D}uring the {H}olocene transgression, the possibility of excessive turbidity due to volcanic activity may have inhibited reef development in this area. {T}he un-dated unit {U}-2 probably developed 120-130 ka ago during the last interglacial ({MIS} 5.5) + 6 m {MSL} highstand as thick, extensive reefs deposited all along the {L}esser {A}ntilles arc. {D}ue to subsidence, {MIS} 5.5 reefs are not represented by onshore facies, except along the southern {S}ainte {A}nne {P}eninsula where normal faulting and uplift balances island-scale subsidence. {B}ased on unit {U}-2's present elevation and assuming an {MIS} 5.5 age and + 6 m {MSL} sea level, {M}artinique has subsided at maximum 03 m/ky, likely due to subduction processes that question the coupling state of the megathrust.}, keywords = {{M}artinique submarine carbonate platform ; {S}eismic profiles ; {R}eef stratigraphy ; {R}eef morphology ; {T}ectonic subsidence ; {V}olcanism ; {D}rowned reefs ; {L}esser {A}ntilles ; {MARTINIQUE}}, booktitle = {}, journal = {{M}arine {G}eology}, volume = {369}, numero = {}, pages = {34--51}, ISSN = {0025-3227}, year = {2015}, DOI = {10.1016/j.margeo.2015.08.001}, URL = {https://www.documentation.ird.fr/hor/fdi:010065497}, }