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D'Entrecasteaux Islands

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Journal Article
Journal: Geology
Published: 01 October 1992
Geology (1992) 20 (10): 907-910.
...E. J. Hill; S. L. Baldwin; G. S. Lister Abstract Metamorphic core complexes in the D'Entrecasteaux Islands are forming as a result of active extension at the western end of the Woodlark Basin spreading center. High-grade metamorphic rocks exist in the cores of gneissic domes, including eclogites...
Image
Tectonic map of the <b>D’Entrecasteaux</b> <b>Islands</b> MCCs, Papua New Guinea, modifie...
Published: 01 January 2015
Fig. 9. Tectonic map of the D’Entrecasteaux Islands MCCs, Papua New Guinea, modified from Little et al . (2011) . The tip of the propagating ocean-ridge segment in the Woodlark Basin lies just east of the map area. Dome-shaped MCCs are delineated by active normal faults (black), which displace
Image
Present-day three-dimensional block diagram of <b>D&#x27;Entrecasteaux</b> <b>Islands</b> modi...
in > Geology
Published: 01 October 2008
Figure 3. Present-day three-dimensional block diagram of D'Entrecasteaux Islands modified after Hill et al. (1995) . G—Goodenough; F—Fergusson; N—Normanby; PUB—Papuan Ultra-mafic Belt; AUS—Australian plate.
Journal Article
Journal: GSA Bulletin
Published: 01 December 1971
GSA Bulletin (1971) 82 (12): 3299-3312.
... is generally greenschist facies, but is higher in the D'Entrecasteaux Islands and on part of Misima Island; lawsonite occurs mainly within a few kilometers of the Owen Stanley fault which bounds the mainland metamorphics on the north and northeast. Mesozoic mafic rocks include peridotite, gabbro and basalt...
Journal Article
Journal: Lithosphere
Published: 01 April 2012
Lithosphere (2012) 4 (2): 131-149.
... center, but it is unknown whether all core complexes are still active. We assess the spatial pattern and recent history of rock and surface uplift in the subaerial portion of the Woodlark Rift using stream profile analyses on the D'Entrecasteaux Islands and eastern Papuan Peninsula. Most stream profiles...
FIGURES | View All (15)
Series: Geological Society, London, Special Publications
Published: 01 January 2001
DOI: 10.1144/GSL.SP.2001.187.01.18
EISBN: 9781862394353
... 1118A are significantly older than indicated by biostratigraphic and palaeomagnetic data, probably because of the presence of older reworked volcanic crystals. The youngest ash layer is derived from explosive eruptions in the Dawson Strait area of the D’Entrecasteaux Islands, whereas the four older...
FIGURES | View All (11)
Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2406
..., but are especially characteristic from the south coast of Viti Levu in Fiji. Quartzose tectonic highland tempers occur in sherds from the outer Banda arc, the Aru Islands in the Arafura Sea, the D'Entrecasteaux Islands of the Solomon Sea, and New Caledonia. Nonquartzose tectonic highland tempers derived from...
Series: Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP385.7
EISBN: 9781862396494
... southward beneath the D’Entrecasteaux Islands and Papuan mainland ( Davies et al. 1984 ; Smith 2013 ). The Papuan arc comprises late Cenozoic (11 Ma to Recent; Smith & Compston 1982 ) high-K arc-type volcanic rocks which form a belt of volcanic centres on the NE Papuan mainland...
FIGURES | View All (9)
Journal Article
Journal: Geology
Published: 01 September 2008
Geology (2008) 36 (9): 735-738.
... eclogite from the lower plate of one of the D'Entrecasteaux Islands metamorphic core complexes within the Woodlark Rift. Zircon crystallization temperatures (650–675 °C) and 238 U/ 206 Pb age (ca. 8 Ma), and rutile thermometry (695–743 °C) combined with garnet-pyroxene thermometry (600–760 °C) and garnet...
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Journal Article
Journal: Geology
Published: 01 November 1995
Geology (1995) 23 (11): 1023-1026.
...Suzanne L. Baldwin; Trevor R. Ireland Abstract U/Pb ion microprobe analyses of zircons from gneisses and granodiorites exposed in the D'Entrecasteaux Islands, and from conglomerate sections of the Goodenough No. 1 well in the adjacent Trobriand Basin, provide constraints on the age of magmatism...
Journal Article
Journal: AAPG Bulletin
Published: 01 December 1974
AAPG Bulletin (1974) 58 (12): 2477-2489.
... the Cape Vogel basin and another separate basin between the Trobriand and D’Entrecasteaux Islands. These basins are on an overriding plate of oceanic mantle and crust that was thrust southwestward onto the Mesozoic Owen Stanley metamorphic rocks during an earlier period of plate-tectonic adjustment...
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Series: GSA Special Papers
Published: 01 January 2004
DOI: 10.1130/0-8137-2383-3(2004)383[225:TNCOAI]2.0.CO;2
... The origin of map-view bends of orogenic belts and arcs remains enigmatic. Here I summarize geological evidence indicating that a bend of the northern end of a ribbon continent extending north from the Northland Peninsula, New Zealand, through New Caledonia and the Loyalty Islands...
Journal Article
Journal: Geology
Published: 01 November 1986
Geology (1986) 14 (11): 951-954.
...Michael A. Fisher; Jean-Yves Collot; Gregory L. Smith Abstract A major submarine mountain chain called the d'Entrecasteaux zone (DEZ) collides with the central part of the New Hebrides arc. Three migrated multichannel seismic sections obtained across this collision zone show considerable structural...
Journal Article
Journal: GSA Bulletin
Published: 01 August 1974
GSA Bulletin (1974) 85 (8): 1287-1300.
... of the D'Entrecasteaux Fracture Zone into the trench rather than by interarc spreading. In this region, the western and eastern chains of the New Hebrides group have been recently uplifted and tilted toward one another, creating a sedimentary basin. Most data do not support the idea that the eastern island belt...
Journal Article
Published: 01 December 1988
Bulletin of the Seismological Society of America (1988) 78 (6): 1984-2007.
...S. W. Roecker; J.-L. Chatelain; B. L. Isacks; R. Prevot Abstract The central New Hebrides island arc is a morphologically complex area where the island blocks of Santo and Malekula replace the trench and override the D'Entrecasteaux Fracture Zone (DFZ), a major aseismic ridge, on the subducting...
Series: AAPG Studies in Geology
Published: 01 January 1986
DOI: 10.1306/St26461C9
EISBN: 9781629811499
... Abstract The New Hebrides island arc strikes northward through the southwestern Pacific Ocean and parallels the trench where the Australia-India plate on the west is subducted beneath the North Fiji basin on the east. Convergence between the oceanic plate and the arc occurs in an easterly...
Journal Article
Journal: Geology
Published: 01 November 1999
Geology (1999) 27 (11): 963-966.
...Simon P. Turner; David W. Peate; Chris J. Hawkesworth; Stephen M. Eggins; Anthony J. Crawford Abstract U-Th isotope disequilibria can provide constraints on the time elapsed since fluid addition to the mantle wedge beneath island arcs. The Vanuatu arc offers new insights into these processes...
Journal Article
Journal: Geology
Published: 01 November 1995
Geology (1995) 23 (11): 1011-1014.
...F. W. Taylor; M. G. Bevis; B. E. Schutz; D. Kuang; J. Recy; S. Calmant; D. Charley; M. Regnier; B. Perin; M. Jackson; C. Reichenfeld Abstract Global positioning system (GPS) measurements in 1990 and 1992 from two sites on the southern New Hebrides island arc give convergence rates...
Journal Article
Journal: Geology
Published: 19 July 2018
Geology (2018) 46 (9): 767-770.
... be linked to the subduction of a large and irregular bathymetric feature: the D’Entrecasteaux Ridge (DER). The DER, which extends back along the Australian plate to New Caledonia, appears to have entered into subduction at 2–3 Ma at the Epi island reentrant, ∼160 km to the south ( Fig. 1 ) ( Greene et al...
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Journal Article
Journal: Geology
Published: 01 April 2002
Geology (2002) 30 (4): 311-314.
... to continued rollback of the southern part of the subducting slab. Here, active extension was separated from the slightly or nonextending northwest corner by a zone striking at high angle to the New Hebrides arc, i.e., the Hazel Holme extensional zone. Moreover, impingement of the d'Entrecasteaux Ridge...
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