Plate boundaries and evolution of the Solomon Sea region

Honza, Eiichi; Davies, H. L.; Keene, J. B.; Tiffin, D. L.

doi:10.1007/bf02238046

Cited by 51 publications

(21 citation statements)

References 29 publications

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“…Reflection profiles across the Trobriand Trough display all the bathymetric and structural features characteristic of subduction zones (Davies et al, 1984Lock et al, 1987;Galewsky and Silver, 1997), and a forearc basin of typical configuration is present beneath the Trobriand Platform (Fig. 6C) between the Trobriand Trough and the D'Entrecasteaux Islands (Davies et al, 1984;Honza et al, 1987). Limited mantle seismicity confirms the presence of a south-dipping subducted slab beneath the western end of the Trobriand Platform and the Papuan Peninsula (Cooper and Taylor, 1987).…”

Section: Solomon Seamentioning

confidence: 70%

“…Abbreviations: A = Athens; I = Istanbul; NAF = North Anatolian fault. C. Trobriand Trough subduction zone (Kiriwina Trench of Ollier and Pain, 1980) after Davies et al (1984Davies et al ( , 1987, Honza et al (1987), and Lock et al (1987); core-complex vergence after Hill et al (1992); Woodlark Basin spreading system (WBSS) after Taylor et al (1995) and Martínez et al (1999); Papuan arc volcanoes (onshore and offshore) from Smith and Compston (1982), and Smith and Milsom (1984) southwestern Oregon into southwesternmost Washington, implies bulk rotation of an elongate crustal sliver moving clockwise as an intact lever with respect to the interior of the continental block (Heller and Ryberg, 1983;Heller et al, 1987). The northern end of the rotating lever apparently lay just south of the Olympic Peninsula, for Paleogene strata of the Olympic Mountains (Figs.…”

Section: Pacific Northwest Transrotationmentioning

confidence: 96%

“…The north-facing (subduction down to the south) Trobriand Trough was the dominant subduction zone within the region during Miocene time (Honza et al, 1987), prior to the close approach of the S-facing New Britain-Solomon Islands arc-trench system toward the New Guinea continental margin. The current dominance of S-facing (downward to the north) subduction at the linked New Britain and San Cristobal trenches bounding the New Britain and Solomon island arcs, respectively, has probably slowed subduction along the Trobriand Trough, and thus encouraged slab rollback.…”

Section: Solomon Seamentioning

confidence: 99%

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The Basin and Range Province as a Composite Extensional Domain

Dickinson

2002

International Geology Review

228

254

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The Basin and Range province is a composite Cenozoic taphrogen with a present configuration and internal geometry derived from superimposed multiple phases of extensional deformation driven by varied geodynamic impulses. Different components of the composite taphrogen derive from: (a) post-orogenic Late Paleocene to Middle Miocene slab rollback beneath overthickened crust of the Sevier-Laramide orogen, to induce migratory arc magmatism, tectonic denudation of Cordilleran metamorphic core complexes within associated domains of crustal extension, and belts of backarc rifting including pre-Middle Miocene phases of the Rio Grande rift; (b) Eocene transrotational tectonism that pivoted and displaced crustal elements of the Paleogene forearc in the Pacific Northwest; (c) late Early Miocene and younger crustal extension in the northwestern Basin and Range province (Numic subtraphrogen including segments in the Great Basin, Southeast Oregon Plateau, and Idaho-Montana border regions) as structural accompaniment to northward migration of the Mendocino triple junction; and (d) late Middle Miocene and younger crustal extension in the southeastern Basin and Range province (Piman subtaphrogen including the Gulf of California extensional province, interior Meseta Central province, and post-mid-Miocene Rio Grande rift) succeeding the rapid southward migration of the Rivera triple junction. A transtaphrogen bridge spanning the Mojave block, Eastern Transverse Ranges, and a broad region in southeastern California and southwestern Arizona experienced only limited post-mid-Miocene extensional deformation during evolution of the active Numic and Piman subtaphrogens lying to the northwest and southeast. The compound evolutionary history of the Basin and Range province renders moot any unitary theories for its geodynamic behavior.

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Section: Solomon Seamentioning

confidence: 70%

Section: Pacific Northwest Transrotationmentioning

confidence: 96%

Section: Solomon Seamentioning

confidence: 99%

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The Basin and Range Province as a Composite Extensional Domain

Dickinson

2002

International Geology Review

228

254

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“…Woodlark Island) and seamounts (e.g. Egum atoll), beyond which lies the Trobriand Trough, interpreted as an active south-dipping subduction zone related to the Trobriand Arc; further north again is the Solomon Sea, which is floored by oceanic crust Honza et al 1987; Fig. 1).…”

Section: Regional Settingmentioning

confidence: 97%

Evolution of the Miocene-Recent Woodlark Rift Basin, SW Pacific, inferred from sediments drilled during Ocean Drilling Program Leg 180

Robertson

Awadallah

Gerbaudo

et al. 2001

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The results of drilling during Ocean Drilling Program Leg 180 provide insights into fundamental processes of continental break-up, because rifting can be related to westward propagation of a spreading centre into continental crust. A generally north-south transect of holes was drilled across the Woodlark Rift on the uplifted northern rift margin on the Moresby Seamount (Sites 1114 and 1116), on the hanging wall of the low-angle (25–30°) extensional Moresby Detachment Fault (Sites 1108, 1110–1113 and 1117) and across the downflexed northern rift margin (Sites 1118, 1109 and 1115). The results, when placed in the regional tectonic context, document a history of Palaeogene ophiolite emplacement, followed by Miocene arc-related sedimentation. Regional uplift and emergence of the forearc area took place in Late Miocene time. Submergence to form the Woodlark Rift began in latest Miocene time, marked by widespread marine transgression and shallow-water deposition, accompanied by input of air-fall tephra and volcaniclastic sediments. During Pliocene time, deposition within the rift basin was dominated by deep-water turbidites, including high-density turbidites in the south. Strong extension along the north-dipping Moresby Detachment Fault was active during Pleistocene time, associated with uplift of the Moresby Seamount and shedding of fault-derived talus, mainly of meta-ophiolitic origin. During Pleistocene time, a carbonate platform was constructed to the NW, trapping clastic sediment and resulting in a switch to slower, more pelagic and hemipelagic deposition within the Woodlark Rift Basin. The marked change in rift basin configuration during Pleistocene time may relate to westward propagation of the Woodlark oceanic spreading centre at c. 2 Ma.

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“…It is associated with south-westward subduction of dominantly Oligocene oceanic crust beneath the Trobriand arc Honza et al 1987;Taylor 1987;Taylor et al 1999a). It is associated with south-westward subduction of dominantly Oligocene oceanic crust beneath the Trobriand arc Honza et al 1987;Taylor 1987;Taylor et al 1999a).…”

Section: Introductionmentioning

confidence: 99%

Late Cenozoic volcanism in the western Woodlark Basin area, SW Pacific: the sources of marine volcanic ash layers based on their elemental and Sr–Nd isotope compositions

et al. 2003

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Tephra fallout layers and volcaniclastic deposits, derived from volcanic sources around and on the Papuan Peninsula, form a substantial part of the Woodlark Basin marine sedimentary succession. Sampling by the Ocean Drilling Program Leg 180 in the western Woodlark Basin provides the opportunity to document the distribution of the volcanically-derived components as well as to evaluate their chronology, chemistry, and isotope compositions in order to gain information on the volcanic sources and original magmatic systems. Glass shards selected from 57 volcanogenic layers within the sampled Pliocene-Pleistocene sedimentary sequence show predominantly rhyolitic compositions, with subordinate basaltic andesites, basaltic trachy-andesites, andesites, trachy-andesites, dacites, and phonolites. It was possible to correlate only a few of the volcanogenic layers between sites using geochemical and age information apparently because of the formation of strongly compartmentalised sedimentary realms on this actively rifting margin. In many cases it was possible to correlate Leg 180 volcanic components with their eruption source areas based on chemical and isotope compositions. Likely sources for a considerable number of the volcanogenic deposits are Moresby and Dawson Strait volcanoes (D'Entrecasteaux mobilisation of the deep continental crust during active rift propagation.

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Plate boundaries and evolution of the Solomon Sea region

Cited by 51 publications

References 29 publications

The Basin and Range Province as a Composite Extensional Domain

The Basin and Range Province as a Composite Extensional Domain

Evolution of the Miocene-Recent Woodlark Rift Basin, SW Pacific, inferred from sediments drilled during Ocean Drilling Program Leg 180

Late Cenozoic volcanism in the western Woodlark Basin area, SW Pacific: the sources of marine volcanic ash layers based on their elemental and Sr–Nd isotope compositions

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