Regional setting of a complex backarc: New Hebrides Arc, northern Vanatu-eastern Solomon Islands
Identifieur interne : 00D885 ( Main/Exploration ); précédent : 00D884; suivant : 00D886Regional setting of a complex backarc: New Hebrides Arc, northern Vanatu-eastern Solomon Islands
Auteurs : D. P. Johnson [Australie] ; P. C. Maillet [France] ; R. Price [Australie]Source :
- Geo-Marine Letters [ 0276-0460 ] ; 1993-06-01.
Descripteurs français
- Wicri :
- geographic : Fidji.
- topic : Ressource minérale.
English descriptors
- KwdEn :
- Backarc, Backarc basins, Backarc troughs, Banks islands, Basin, Basin formation, Bright zones, Central basin, Central chain, Charcot, Charvis, Comptes rendus, Coriolis troughs, Crust, Earth science series, Earthquake mechanism solutions, Eastern flank, Eastern solomon islands, Extensional features, Fiji, Fiji basin, Fiji plateau, Geological society, Gloria, Gloria data show, Gloria image, Gloria imagery, Graben structures, Hazel, Hazel holme facture zone, Hazel holme fracture zone, Heat flow, Hebrides, Hebrides island, Hhfz, Holme, Impacting zone, Individual troughs, Jean charcot troughs, Kroenke, Louat, Marginal basin, Marginal basins, Mineral resources, Northern part, Northern side, Oceanologica acta, Offshore resources, Pacific island region, Pelletier, Platform levels, Recent extension, Regional bathymetry, Ridge crest processes, Seabed, Study area, Torres islands, Triple junction, Trough, Vanikoro trough.
- Teeft :
- Backarc, Backarc basins, Backarc troughs, Banks islands, Basin, Basin formation, Bright zones, Central basin, Central chain, Charcot, Charvis, Comptes rendus, Coriolis troughs, Crust, Earth science series, Earthquake mechanism solutions, Eastern flank, Eastern solomon islands, Extensional features, Fiji, Fiji basin, Fiji plateau, Geological society, Gloria, Gloria data show, Gloria image, Gloria imagery, Graben structures, Hazel, Hazel holme facture zone, Hazel holme fracture zone, Heat flow, Hebrides, Hebrides island, Hhfz, Holme, Impacting zone, Individual troughs, Jean charcot troughs, Kroenke, Louat, Marginal basin, Marginal basins, Mineral resources, Northern part, Northern side, Oceanologica acta, Offshore resources, Pacific island region, Pelletier, Platform levels, Recent extension, Regional bathymetry, Ridge crest processes, Seabed, Study area, Torres islands, Triple junction, Trough, Vanikoro trough.
Abstract
Abstract: New GLORIA imagery over the complex backarc area of the northern New Hebrides Arc clearly outlines the deeply faulted Jean Charcot Troughs. The troughs are 2400–3000 m deep and are not magmatically active. They appear to be fragmented older crust and are not backarc basins in the usual sense. Horst and graben structures on the Hazel Holme Fracture Zone (HHFZ) cut obliquely across the trend of the Zone, which therefore is not a simple transform. The enechelon ridges may form a relay, but Y-shaped grabens could be remnant spreading zones, formed earlier in the history of the western part of the North Fiji Basin.
Url:
DOI: 10.1007/BF01204549
Affiliations:
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Le document en format XML
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Backarc</term>
<term>Backarc basins</term>
<term>Backarc troughs</term>
<term>Banks islands</term>
<term>Basin</term>
<term>Basin formation</term>
<term>Bright zones</term>
<term>Central basin</term>
<term>Central chain</term>
<term>Charcot</term>
<term>Charvis</term>
<term>Comptes rendus</term>
<term>Coriolis troughs</term>
<term>Crust</term>
<term>Earth science series</term>
<term>Earthquake mechanism solutions</term>
<term>Eastern flank</term>
<term>Eastern solomon islands</term>
<term>Extensional features</term>
<term>Fiji</term>
<term>Fiji basin</term>
<term>Fiji plateau</term>
<term>Geological society</term>
<term>Gloria</term>
<term>Gloria data show</term>
<term>Gloria image</term>
<term>Gloria imagery</term>
<term>Graben structures</term>
<term>Hazel</term>
<term>Hazel holme facture zone</term>
<term>Hazel holme fracture zone</term>
<term>Heat flow</term>
<term>Hebrides</term>
<term>Hebrides island</term>
<term>Hhfz</term>
<term>Holme</term>
<term>Impacting zone</term>
<term>Individual troughs</term>
<term>Jean charcot troughs</term>
<term>Kroenke</term>
<term>Louat</term>
<term>Marginal basin</term>
<term>Marginal basins</term>
<term>Mineral resources</term>
<term>Northern part</term>
<term>Northern side</term>
<term>Oceanologica acta</term>
<term>Offshore resources</term>
<term>Pacific island region</term>
<term>Pelletier</term>
<term>Platform levels</term>
<term>Recent extension</term>
<term>Regional bathymetry</term>
<term>Ridge crest processes</term>
<term>Seabed</term>
<term>Study area</term>
<term>Torres islands</term>
<term>Triple junction</term>
<term>Trough</term>
<term>Vanikoro trough</term>
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<term>Backarc basins</term>
<term>Backarc troughs</term>
<term>Banks islands</term>
<term>Basin</term>
<term>Basin formation</term>
<term>Bright zones</term>
<term>Central basin</term>
<term>Central chain</term>
<term>Charcot</term>
<term>Charvis</term>
<term>Comptes rendus</term>
<term>Coriolis troughs</term>
<term>Crust</term>
<term>Earth science series</term>
<term>Earthquake mechanism solutions</term>
<term>Eastern flank</term>
<term>Eastern solomon islands</term>
<term>Extensional features</term>
<term>Fiji</term>
<term>Fiji basin</term>
<term>Fiji plateau</term>
<term>Geological society</term>
<term>Gloria</term>
<term>Gloria data show</term>
<term>Gloria image</term>
<term>Gloria imagery</term>
<term>Graben structures</term>
<term>Hazel</term>
<term>Hazel holme facture zone</term>
<term>Hazel holme fracture zone</term>
<term>Heat flow</term>
<term>Hebrides</term>
<term>Hebrides island</term>
<term>Hhfz</term>
<term>Holme</term>
<term>Impacting zone</term>
<term>Individual troughs</term>
<term>Jean charcot troughs</term>
<term>Kroenke</term>
<term>Louat</term>
<term>Marginal basin</term>
<term>Marginal basins</term>
<term>Mineral resources</term>
<term>Northern part</term>
<term>Northern side</term>
<term>Oceanologica acta</term>
<term>Offshore resources</term>
<term>Pacific island region</term>
<term>Pelletier</term>
<term>Platform levels</term>
<term>Recent extension</term>
<term>Regional bathymetry</term>
<term>Ridge crest processes</term>
<term>Seabed</term>
<term>Study area</term>
<term>Torres islands</term>
<term>Triple junction</term>
<term>Trough</term>
<term>Vanikoro trough</term>
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<front><div type="abstract" xml:lang="en">Abstract: New GLORIA imagery over the complex backarc area of the northern New Hebrides Arc clearly outlines the deeply faulted Jean Charcot Troughs. The troughs are 2400–3000 m deep and are not magmatically active. They appear to be fragmented older crust and are not backarc basins in the usual sense. Horst and graben structures on the Hazel Holme Fracture Zone (HHFZ) cut obliquely across the trend of the Zone, which therefore is not a simple transform. The enechelon ridges may form a relay, but Y-shaped grabens could be remnant spreading zones, formed earlier in the history of the western part of the North Fiji Basin.</div>
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