@article{fdi:010009466,
  title = {{G}eometry and structure of the {V}itiaz trench lineament ({SW} {P}acific)},
  author = {{P}elletier, {B}ernard and {A}uzende, {J}ean-{M}arie},
  editor = {},
  language = {{ENG}},
  abstract = {{S}wath bathymetric, sonar imagery and seismic reflection data dollected during thee {SOPACMAPS} cruise {L}eg 3 over segments of the {V}itiaz {T}rench {L}ineament and adjacent areas provide new insights on the geometry and the structural evolution of this seismically inactive lineament. {T}he {V}itiaz {T}rench {L}ineament, although largely unknown, is one of the most important tectonic feature in the {SW} {P}acific because it separates the {C}retaceous crust of the {P}acific {P}late to the north from the {C}enozoic lithosphere of the {N}orth {F}iji and {L}au {B}asins to the south. {T}he lineament is considered to be the convergent plate boundary between the {P}acific and {A}ustralian {P}lates during middle to late {T}ertiary time when the {V}itiaz {A}rc was a continuous east-facing arc from the {T}onga to the {S}olomon {I}slands before the development of the {N}orth {F}iji and {L}au {B}asins. {P}rogresive reversal and cessation of subduction from west to east in the late {M}iocene-{L}ower {P}liocene have been also proposed. {H}owever, precise structures and age of initiation and cessation of deformation along the {V}itiaz {T}rench {L}ineament are unknown. {T}he lineament consists of the {V}itiaz {T}rench and three discontinuous and elongated troughs ({A}lexa, {R}otuma and {H}orne {T}roughs) which connect the {V}itiaz {T}rench to the northern end of the {T}onga {T}rench. {O}ur survey of the {A}lexa and {R}otuma {T}roughs reveals that the lineament is composed of a series of {WNW}-{ESE} and {ENE}-{WSW} trending segments in front of large volcanic massifs belonging to the {M}elanesian {B}order {P}lateau, a {WNW} trending volcanic belt of seamounts and ridges on {P}acific crust. {T}he {P}lateau and {P}acific plate lying immediately north of the lineament have been affected by intense normal faulting, collapse, and volcanism as evidenced by a series of tilted blocks, grabens, horsts and ridges trending {N}120° to {N}100° and {N}60°-70°. {T}his tectonism includes several normal faulting episodes, the latest being very recent and possibly still active. ({R}{\'e}sum{\'e} d'auteur)},
  keywords = {{TECTONIQUE} {DE} {PLAQUES} ; {SUBDUCTION} ; {CROUTE} {OCEANIQUE} ; {GEOLOGIE} {STRUCTURALE} ; {TECTONIQUE} ; {VOLCANISME} ; {BATHYMETRIE} ; {SISMIQUE} {A} {REFLEXION} ; {GEODYNAMIQUE} ; {PACIFIQUE} {SUD} {OUEST} ; {VITIAZ} {REGION}},
  booktitle = {},
  journal = {{M}arine {G}eophysical {R}esearches},
  volume = {18},
  numero = {},
  pages = {305--335},
  ISSN = {0025-3235},
  year = {1996},
  DOI = {10.1007/{BF}00286083},
  URL = {https://www.documentation.ird.fr/hor/fdi:010009466},
}