Tectonic history of northern New Caledonia Basin from deep offshore seismic reflection: Relation to late Eocene obduction in New Caledonia, southwest Pacific

Collot, Julien; Géli, Louis; Lafoy, Y.; Vially, R.; Cluzel, Dominique; Klingelhoëfer, Frauke; Nouzé, Hervé

doi:10.1029/2008tc002263

Cited by 55 publications

(75 citation statements)

References 66 publications

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“…Seismic profiles ( [19,33]; augmented by Stampfli, unpublished data from SHELL) suggest the New Caledonia Basin is an abandoned rift (i.e., no oceanic crust, but see [42] for different interpretations), with Cretaceous sediment infill.…”

Section: Gondwana Fitmentioning

confidence: 97%

“…The creation of an ocean is required since seismic profiles and subsidence curves indicate the existence of a passive margin with no evidence of magmatic arc remnants prior to the Oligocene [19,84]. The arc, off N.NZ, is shifted from the 3K-Loyalty arc by a transform fault (corresponding to the current Vening-Meinesz Fracture Zone).…”

Section: Late Cretaceous Evolution-re-openingmentioning

confidence: 99%

“…Seismic profiles in the New Caledonia basin indicate basin infill of probable mid-Cretaceous age (e.g., [19,42]). Those data are interpreted as recording rifting away of the GDUs lying east of Lord Howe Rise.…”

Section: Early Cretaceous Evolution-passive Margin Inversionmentioning

confidence: 99%

“…The COB is drawn at the base of the continental slopes (maximum concave curvatures, id est maximum second derivative), where the gravity gradient is maximum (maximum first derivative) and the magnetic pattern of ocean crust are not yet present. Such a definition corresponds well, at the scale of our reconstruction, with the COB as defined by existing seismic transects (e.g., [15][16][17][18][19]) and can be applied continuously all along the COB. Note, however, that our COB definition corresponds to the boundary of the "main" continental crust, and that potential denuded mantle is included in the oceanic part.…”

Section: Gondwana Fitmentioning

confidence: 99%

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Geodynamic Reconstructions of the Australides—2: Mesozoic–Cainozoic

Vérard

Stampfli

2013

Geosciences

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The present work, derived from a full global geodynamic reconstruction model over 600 Ma and based on a large database, focuses herein on the interaction between the Pacific, Australian and Antarctic plates since 200 Ma, and proposes integrated solutions for a coherent, physically consistent scenario. The evolution of the Australia-Antarctica-West Pacific plate system is dependent on the Gondwana fit chosen for the reconstruction. Our fit, as defined for the latest Triassic, implies an original scenario for the evolution of the region, in particular for the "early" opening history of the Tasman Sea. The interaction with the Pacific, moreover, is characterised by many magmatic arc migrations and ocean openings, which are stopped by arc-arc collision, arc-spreading axis collision, or arc-oceanic plateau collision, and subduction reversals. Mid-Pacific oceanic plateaus created in the model are much wider than they are on present-day maps, and although they were subducted to a large extent, they were able to stop subduction. We also suggest that adduction processes (i.e., re-emergence of subducted material) may have played an important role, in particular along the plate limit now represented by the Alpine Fault in New Zealand.

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Section: Gondwana Fitmentioning

confidence: 97%

Section: Late Cretaceous Evolution-re-openingmentioning

confidence: 99%

Section: Early Cretaceous Evolution-passive Margin Inversionmentioning

confidence: 99%

Section: Gondwana Fitmentioning

confidence: 99%

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Geodynamic Reconstructions of the Australides—2: Mesozoic–Cainozoic

Vérard

Stampfli

2013

Geosciences

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“…The peak of high-pressure metamorphism in northern New Caledonia was at 44 Ma, and exhumation was largely complete by 34 Ma (Baldwin et al, 2007). Seismic-stratigraphic evidence shows that the New Caledonia Trough either formed or was substantially modified during this event, though Cretaceous sedimentary basins beneath the trough escaped Cenozoic convergent deformation in most places (Collot et al, 2008;Sutherland et al, 2010). Regional deformation and emplacement of allochthons in northern New Zealand occurred later than in New Caledonia or the Norfolk Ridge system, with the onset of tectonic activity during the late Oligocene and early Miocene (~30-20 Ma) (Bache et al, 2012;Herzer, 1995;Herzer et al, 1997;Rait et al, 1991;Stagpoole and Nicol, 2008).…”

Section: Geological Settingmentioning

confidence: 99%

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Sutherland¹,

Dickens²,

Blum³

et al. 2018

International Ocean Discovery Program Preliminary Report

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International Ocean Discovery Program (IODP) Expedition 371 drilled six sites in the Tasman Sea of the southwest Pacific between 27 July and 26 September 2017. The primary goal was to understand Tonga-Kermadec subduction initiation through recovery of Paleogene sediment records. Secondary goals involved understanding regional oceanography and climate since the Paleogene. Six sites were drilled, recovering 2506 m of cored sediment and volcanic rock in 36.4 days of on-site drilling during a total expedition length of 58 days. Wireline logs were collected at two sites. Shipboard observations made using cores and logs represent a substantial gain in fundamental knowledge about northern Zealandia, because only Deep Sea Drilling Project Sites 206, 207, and 208 had penetrated beneath upper Eocene strata within the region.The cored intervals at five sites (U1506-U1510) sampled nannofossil and foraminiferal ooze or chalk that contained volcanic or volcaniclastic intervals with variable clay content. Paleocene and Cretaceous sections range from more clay rich to predominantly claystone. At the final site (U1511), a sequence of abyssal clay and diatomite was recovered with only minor amounts of carbonate. The ages of strata at the base of each site were middle Eocene to Late Cretaceous, and our new results provide the first firm basis for defining formal lithostratigraphic units that can be mapped across a substantial part of northern Zealandia and related to onshore regions of New Caledonia and New Zealand.The material and data recovered during Expedition 371 enable primary scientific goals to be accomplished. All six sites provided new stratigraphic and paleogeographic information that can be put into context through regional seismic-stratigraphic interpretation and hence provide strong constraints on geodynamic models of subduction zone initiation. Our new observations can be directly related to the timing of plate deformation, the magnitude and timing of vertical motions, and the timing and type of volcanism. Secondary paleoclimate objectives were not all completed as planned, but significant new records of southwest Pacific climate were obtained.

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A drastic lower Miocene regolith evolution triggered by post obduction slab break-off and uplift in New Caledonia

et al. 2014

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A lower Miocene coarse conglomerate that crops out in the Népoui Peninsula does not represent the base of the marine transgression that followed obduction in New Caledonia. Instead, the conglomeratic alluvial fan that contains peridotite cobbles and reworked weathering products records a short-lived episode of terrestrial erosion intercalated between two intervals of subsidence marked by marine carbonate deposition. Considering the Miocene sea level evolution reported in the literature, it is concluded that neither lower Miocene transgression nor erosion were driven by sea level variation. In contrast, a southeastward propagating slab tear that initiated at the latitude of the high pressure/low temperature metamorphic complex of northern New Caledonia likely generated east to west tilting of New Caledonia, subsidence along the West Coast and hence fringing reef development together with moderate erosion of older regolith. Coincidence between conglomerate deposition and hence prominent erosion that closely followed emplacement of postobduction granitoids influenced by a slab window suggests a genetic link. Therefore, it is concluded that short-lived lower Miocene erosion was due to slab breakoff and subsequent uplift that occurred at~22 Ma. Lower Miocene erosion profoundly dissected the Peridotite Nappe and in the northern half of New Caledonia only left isolated klippes along the West Coast.

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Tectonic history of northern New Caledonia Basin from deep offshore seismic reflection: Relation to late Eocene obduction in New Caledonia, southwest Pacific

Cited by 55 publications

References 66 publications

Geodynamic Reconstructions of the Australides—2: Mesozoic–Cainozoic

Geodynamic Reconstructions of the Australides—2: Mesozoic–Cainozoic

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A drastic lower Miocene regolith evolution triggered by post obduction slab break-off and uplift in New Caledonia

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