@article{fdi:010077126,
  title = {{T}he {B}unce fault and strain partitioning in the {N}orthern {L}esser {A}ntilles},
  author = {{L}aurencin, {M}. and {M}arcaillou, {B}. and {G}raindorge, {D}. and {L}ebrun, {J}. {F}. and {K}lingelhoefer, {F}. and {B}oucard, {M}. and {L}aigle, {M}. and {L}allemand, {S}. and {S}chenini, {L}aure},
  editor = {},
  language = {{ENG}},
  abstract = {{S}train partitioning related to oblique plate convergence has long been debated in {N}orthern {L}esser {A}ntilles. {G}eophysical data acquired during the {ANTITHESIS} cruises highlight that the sinistral strike-slip {B}unce {F}ault develops along the vertical, long, and linear discontinuity between the sedimentary wedge and a more rigid backstop. {T}he narrowness of the 20- to 30-km-wide accretionary wedge and its continuity over -850 km is remarkable. {T}he {B}unce {F}ault extends as far south as 18.5 degrees {N} where it anastomoses within the accretionary prism where the sharp increase in convergence obliquity possibly acts as a mechanical threshold. {S}urface traces related to subducting seamounts suggest that 80% of the lateral component of the convergent motion is taken up by internal deformation within the accretionary prism and by the {B}unce {F}ault. {T}he absence of crustal-scale, long-term tectonic system south of the {A}negada {P}assage casts doubt upon the degree of strain partitioning in the {N}orthern {L}esser {A}ntilles. {P}lain {L}anguage {S}ummary: {L}ithospheric plates are frequently bounded by subduction zones where oceanic plates underthrust overriding plates. {I}n most cases, this convergence is oblique to the margin, its resulting tectonic deformation is generally due to margin-normal and margin-parallel components of the plate convergence vector. {A}t the {N}orthern {L}esser {A}ntilles, the {N}orth {A}merican {P}late subducts beneath the {C}aribbean {P}late with oblique convergence increasing from {G}uadeloupe to {V}irgin {I}slands. {T}his study aims to analyze and resolve the tectonic deformation along this margin. {W}e acquired marine geophysical data during {ANTITHESIS} cruises (2014-2016) to image the seafloor and the crustal structure. {W}e place a particular emphasis on the strike-slip {B}unce {F}ault, which extends over similar to 850 km, including a newly discovered 350-km segment, 20-30 km landward from the trench. {A}lthough long strike-slip faults have already been observed at oblique subduction zones, the proximity of the {B}unce {F}ault to the trench is unprecedented. {W}e conclude that the mechanical discontinuity between the sedimentary wedge and a more rigid backstop and the sharp increase in obliquity is likely to control the location of the trench-parallel, strike-slip deformation north of the {A}negada {P}assage when strain partitioning to the south may be small or taken up in more diffuse pattern.},
  keywords = {{PETITES} {ANTILLES}},
  booktitle = {},
  journal = {{G}eophysical {R}esearch {L}etters},
  volume = {46},
  numero = {16},
  pages = {9573--9582},
  ISSN = {0094-8276},
  year = {2019},
  DOI = {10.1029/2019gl083490},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077126},
}