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GLORIA survey of the oceanic-continental transition of the Havre-Taupo Back-Arc Basin

Identifieur interne : 002586 ( Main/Exploration ); précédent : 002585; suivant : 002587

GLORIA survey of the oceanic-continental transition of the Havre-Taupo Back-Arc Basin

Auteurs : I. Wright ; L. Carter ; K. Lewis

Source :

RBID : Pascal:91-0116709

Descripteurs français

English descriptors

Abstract

A GLORIA (Geological Long-Range Inclined Asdic) side-can sonar survey, covering 23,000 km2, provides the first complete imagery of an active and contiguous, oceanic to continental back-arc system, namely, the Havre Trough to Taupo Volcanic Zone (TVZ) New Zealand. Havre Trough tectonism and volcanism relates to a series of laterally discontinuous, multiple spreading rifts which terminate southward at the 3-km-deep Ngatoro Basin. A 45-km sinistral offset attributed to en echelon synthetic shearing separates the basin from the actively spreading TVZ. Sonographs reveal a youthful and complex volcanic seascape with 20 newly discovered seamounts, whereas flanking regions are mantled with a largely featureless mud blanket


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Le document en format XML

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<title xml:lang="en" level="a">GLORIA survey of the oceanic-continental transition of the Havre-Taupo Back-Arc Basin</title>
<author>
<name sortKey="Wright, I" sort="Wright, I" uniqKey="Wright I" first="I." last="Wright">I. Wright</name>
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<author>
<name sortKey="Carter, L" sort="Carter, L" uniqKey="Carter L" first="L." last="Carter">L. Carter</name>
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<author>
<name sortKey="Lewis, K" sort="Lewis, K" uniqKey="Lewis K" first="K." last="Lewis">K. Lewis</name>
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<date when="1990">1990</date>
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<title xml:lang="en" level="a">GLORIA survey of the oceanic-continental transition of the Havre-Taupo Back-Arc Basin</title>
<author>
<name sortKey="Wright, I" sort="Wright, I" uniqKey="Wright I" first="I." last="Wright">I. Wright</name>
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<name sortKey="Carter, L" sort="Carter, L" uniqKey="Carter L" first="L." last="Carter">L. Carter</name>
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<name sortKey="Lewis, K" sort="Lewis, K" uniqKey="Lewis K" first="K." last="Lewis">K. Lewis</name>
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<series>
<title level="j" type="main">Geo-marine letters</title>
<title level="j" type="abbreviated">Geo-mar. lett.</title>
<idno type="ISSN">0276-0460</idno>
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<date when="1990">1990</date>
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<title level="j" type="main">Geo-marine letters</title>
<title level="j" type="abbreviated">Geo-mar. lett.</title>
<idno type="ISSN">0276-0460</idno>
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<keywords scheme="KwdEn" xml:lang="en">
<term>Acoustical surveys</term>
<term>Back-arc basins</term>
<term>Bathymetry</term>
<term>Bottom features</term>
<term>Continental crust</term>
<term>Guyot</term>
<term>Imagery</term>
<term>North Island</term>
<term>Oceanic crust</term>
<term>Rift zone</term>
<term>Rift zones</term>
<term>Sea floor relief</term>
<term>Seamounts</term>
<term>Sonar</term>
<term>Sonar methods</term>
<term>Southwest Pacific</term>
<term>Taupo volcanic zone</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr">
<term>Croûte océanique</term>
<term>Croûte continentale</term>
<term>Sonar</term>
<term>Imagerie</term>
<term>Rift</term>
<term>Bathymétrie</term>
<term>Guyot</term>
<term>Relief sous marin</term>
<term>Sonar vision latérale</term>
<term>Fosse Havre</term>
<term>GLORIA</term>
<term>Bassin marginal interne</term>
<term>Nouvelle Zélande Ile Nord</term>
<term>Zone volcanique Taupo</term>
<term>Levé acoustique</term>
<term>Pacifique Sud Ouest</term>
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<front>
<div type="abstract" xml:lang="en">A GLORIA (Geological Long-Range Inclined Asdic) side-can sonar survey, covering 23,000 km
<sup>2</sup>
, provides the first complete imagery of an active and contiguous, oceanic to continental back-arc system, namely, the Havre Trough to Taupo Volcanic Zone (TVZ) New Zealand. Havre Trough tectonism and volcanism relates to a series of laterally discontinuous, multiple spreading rifts which terminate southward at the 3-km-deep Ngatoro Basin. A 45-km sinistral offset attributed to en echelon synthetic shearing separates the basin from the actively spreading TVZ. Sonographs reveal a youthful and complex volcanic seascape with 20 newly discovered seamounts, whereas flanking regions are mantled with a largely featureless mud blanket</div>
</front>
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<name sortKey="Carter, L" sort="Carter, L" uniqKey="Carter L" first="L." last="Carter">L. Carter</name>
<name sortKey="Lewis, K" sort="Lewis, K" uniqKey="Lewis K" first="K." last="Lewis">K. Lewis</name>
<name sortKey="Wright, I" sort="Wright, I" uniqKey="Wright I" first="I." last="Wright">I. Wright</name>
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{{Explor lien
   |wiki=    Wicri/France
   |area=    LeHavreV1
   |flux=    Main
   |étape=   Exploration
   |type=    RBID
   |clé=     Pascal:91-0116709
   |texte=   GLORIA survey of the oceanic-continental transition of the Havre-Taupo Back-Arc Basin
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