Pre-spread rifting and heterogeneous volcanism in the southern Havre Trough back-arc basin
Identifieur interne : 002314 ( Main/Exploration ); précédent : 002313; suivant : 002315Pre-spread rifting and heterogeneous volcanism in the southern Havre Trough back-arc basin
Auteurs : I. C. Wright [Nouvelle-Zélande]Source :
- Marine geology [ 0025-3227 ] ; 1993.
Descripteurs français
- Pascal (Inist)
- Plaque Pacifique, Plaque Australienne, Convergence plaque, Nouvelle Zélande Ile Nord, Faille en échelon, Extension tectonique, Sismicité, Sismique réflexion, Bassin Lau, Zone volcanique Taupo, Bathymétrie, Profil sismique vertical, Basalte, Analyse majeurs, Morphologie, Formation rift, Anomalie magnétique, Manifestation volcanique, Graben, Fosse abyssale allongée, Bassin arrière arc, Topographie.
English descriptors
- KwdEn :
- Australian Plate, Lau Basin, North Island, Pacific Plate, Taupo volcanic zone, back-arc basins, basalts, bathymetry, en echelon faults, extension tectonics, grabens, magnetic anomalies, major elements, morphology, plate convergence, reflection methods, rifting, seismicity, topography, troughs, vertical seismic profiles, volcanism.
Abstract
The Havre Trough is an active back-arc basin associated with Pacific-Australian plate convergence. Two segments within the southern Havre Trough (SHT), surveyed with Gloria, Seabeam and SYS09 swath data, now provide the first detailed data to reliably document the structure and morphology of this complex back-arc region. At the southern segment (35°40′-37°S), along a strike length of some 120 km, the SHT structure comprises a series of segmented, en echelon, generally flat floored, sediment filled, axial rift grabens, flanked by ridge and basin rift block topography. Prominent fault escarpments, with relief of 500-1000 m and a marked zig-zag arrangement, mark the outer margins of the rift system. Within the rift grabens extensional tectonism is pervasive
Affiliations:
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Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Pre-spread rifting and heterogeneous volcanism in the southern Havre Trough back-arc basin</title><author><name sortKey="Wright, I C" sort="Wright, I C" uniqKey="Wright I" first="I. C." last="Wright">I. C. Wright</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>National inst. water atmospheric res., New Zealand oceanographic inst.</s1><s2>Wellington</s2><s3>NZL</s3></inist:fA14><country>Nouvelle-Zélande</country><wicri:noRegion>Wellington</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">93-0586564</idno><date when="1993">1993</date><idno type="stanalyst">PASCAL 93-0586564 INIST</idno><idno type="RBID">Pascal:93-0586564</idno><idno type="wicri:Area/PascalFrancis/Corpus">000633</idno><idno type="wicri:Area/PascalFrancis/Curation">000580</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000585</idno><idno type="wicri:doubleKey">0025-3227:1993:Wright I:pre:spread:rifting</idno><idno type="wicri:Area/Main/Merge">002379</idno><idno type="wicri:Area/Main/Curation">002314</idno><idno type="wicri:Area/Main/Exploration">002314</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Pre-spread rifting and heterogeneous volcanism in the southern Havre Trough back-arc basin</title><author><name sortKey="Wright, I C" sort="Wright, I C" uniqKey="Wright I" first="I. C." last="Wright">I. C. Wright</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>National inst. water atmospheric res., New Zealand oceanographic inst.</s1><s2>Wellington</s2><s3>NZL</s3></inist:fA14><country>Nouvelle-Zélande</country><wicri:noRegion>Wellington</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Marine geology</title><title level="j" type="abbreviated">Mar. geol.</title><idno type="ISSN">0025-3227</idno><imprint><date when="1993">1993</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Marine geology</title><title level="j" type="abbreviated">Mar. geol.</title><idno type="ISSN">0025-3227</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Australian Plate</term><term>Lau Basin</term><term>North Island</term><term>Pacific Plate</term><term>Taupo volcanic zone</term><term>back-arc basins</term><term>basalts</term><term>bathymetry</term><term>en echelon faults</term><term>extension tectonics</term><term>grabens</term><term>magnetic anomalies</term><term>major elements</term><term>morphology</term><term>plate convergence</term><term>reflection methods</term><term>rifting</term><term>seismicity</term><term>topography</term><term>troughs</term><term>vertical seismic profiles</term><term>volcanism</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Plaque Pacifique</term><term>Plaque Australienne</term><term>Convergence plaque</term><term>Nouvelle Zélande Ile Nord</term><term>Faille en échelon</term><term>Extension tectonique</term><term>Sismicité</term><term>Sismique réflexion</term><term>Bassin Lau</term><term>Zone volcanique Taupo</term><term>Bathymétrie</term><term>Profil sismique vertical</term><term>Basalte</term><term>Analyse majeurs</term><term>Morphologie</term><term>Formation rift</term><term>Anomalie magnétique</term><term>Manifestation volcanique</term><term>Graben</term><term>Fosse abyssale allongée</term><term>Bassin arrière arc</term><term>Topographie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The Havre Trough is an active back-arc basin associated with Pacific-Australian plate convergence. Two segments within the southern Havre Trough (SHT), surveyed with Gloria, Seabeam and SYS09 swath data, now provide the first detailed data to reliably document the structure and morphology of this complex back-arc region. At the southern segment (35°40′-37°S), along a strike length of some 120 km, the SHT structure comprises a series of segmented, en echelon, generally flat floored, sediment filled, axial rift grabens, flanked by ridge and basin rift block topography. Prominent fault escarpments, with relief of 500-1000 m and a marked zig-zag arrangement, mark the outer margins of the rift system. Within the rift grabens extensional tectonism is pervasive</div></front></TEI><affiliations><list><country><li>Nouvelle-Zélande</li></country></list><tree><country name="Nouvelle-Zélande"><noRegion><name sortKey="Wright, I C" sort="Wright, I C" uniqKey="Wright I" first="I. C." last="Wright">I. C. Wright</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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