Sedimentary architecture of a Plio-Pleistocene proto-back-arc basin: Wanganui Basin, New Zealand

Proust, Jean‐Noël; Lamarche, Geoffroy; Nodder, Scott D.; Kamp, Peter J.J.

doi:10.1016/j.sedgeo.2005.06.010

Cited by 33 publications

(72 citation statements)

References 95 publications

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“…This interpretation is supported by south-directed onlap of marine sedimentary rocks onto ravened basement in Wanganui Basin, as revealed by seismic profiles (e.g. Uruski 1998;Proust et al 2005;Nicol in press). Topography in the northern Marlborough area was controlled by a series of faults, forming mountain ranges separated by deep river valleys, similar to the Seaward and Inland Kaikoura ranges, and the Awatere and Clarence rivers today.…”

Section: Wellington: a Foot In Both Campsmentioning

confidence: 82%

“…Underlying this is the north-south migration of a wave of uplift, subsidence and sedimentary basin formation, and then basin inversion that has occurred along the western North Island margin through the Neogene (Stern et al 1992;Kamp et al 2004;Pulford & Stern 2004;Proust et al 2005; Fig. 5).…”

Section: Discussionmentioning

confidence: 99%

“…4). This coastal plain has been progressively drowned due to a southward propagating wave of subsidence that is contiguous with subsidence affecting the Marlborough Sounds (Stern et al 1992;Proust et al 2005;Nicol in press;Fig. 5).…”

Section: Discussionmentioning

confidence: 99%

“…4), of which about one third has since been uplifted to form land. The basin formed as a separate depocentre at about 4.8 Ma due to a major tectonically driven lithospheric-scale pulldown , and since this time it has accumulated up to 5 km of marine-dominated rocks (Proust et al 2005;Townsend et al 2008). The basin comprised an extensive area of marine environments over what is now southwestern North Island, and much of this has only emerged as land in the past 1 Ma (e.g.…”

Section: Wanganui Basinmentioning

confidence: 99%

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Fire and slice: palaeogeography for biogeography at New Zealand's North Island/South Island juncture

Trewick

Bland

2012

Journal of the Royal Society of New Zealand

112

135

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A prominent feature of New Zealand biogeography is that species endemicity and diversity is not evenly distributed but shows an alternating pattern of latitudinal variation. Endemicity is generally highest in South Island and northern North Island and low in southern North Island. A prominent landscape feature that is partly correlated with this is Cook Strait, which separates the two main islands of New Zealand and marks the southern boundary of a region that interests biogeographers and geologists alike. This region encompasses a zone of intense tectonic strain related to the transfer of plate convergence via subduction into oblique-slip and strike-slip faulting. We review geological information and provide new palaeogeographic reconstructions of the area that depict changes in the distribution of mountains, the extent to which southern North Island was under the ocean, and the history of marine straits over the last 4 million years. This information is essential for the development of testable biogeographic hypotheses. We find that the Wellington region was formerly connected to the relatively mountainous Marlborough area, and more distant than today from the northern island of the time. Significant topography in the Kaimanawa Range is probably of Early Pliocene age. However, the Ruahine-Tararua ranges and Taranaki-Taupo volcanics have formed since c. 1 Ma. The implications for the biogeography of central New Zealand are considerable in terms of habitat availability for establishment of terrestrial species and opportunities for range shifting of both terrestrial and coastal organisms.

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Section: Wellington: a Foot In Both Campsmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Wanganui Basinmentioning

confidence: 99%

See 2 more Smart Citations

Fire and slice: palaeogeography for biogeography at New Zealand's North Island/South Island juncture

Trewick

Bland

2012

Journal of the Royal Society of New Zealand

112

135

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“…downward pull on the Australian Plate (Stern et al, 1992(Stern et al, , 1993. The rate of subsidence of the basin 755 since the Pliocene has been estimated to be ~1.0 m ka -1 (e.g., Wilson and McGuire, 1995; Journeaux 756 et al, 1996;Kamp and McIntyre, 1998; Carter et al, 1999;Proust et al, 2005). However, this is a 757 maximum rate based on the depth of fill in the basin depocenter; onshore sites, from which palaeo 758 sea-level indicators were recovered, are likely to have experienced only half this rate of subsidence.…”

Section: Zealand 635mentioning

confidence: 99%

An examination of spatial variability in the timing and magnitude of Holocene relative sea-level changes in the New Zealand archipelago

Clement

Whitehouse

Sloss

2016

Quaternary Science Reviews

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Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Zealand archipelago: the northern North Island (including Northland, Auckland, and the Coromandel 13 Peninsula); the southwest coast of the North Island; the Canterbury coast (South Island); and the 14 Otago coast (South Island). In the North Island the RSL highstand commenced c. 8,100-7,2400 cal yr 15 BP when present mean sea-level (PMSL) was first attained. This is c. 600-1,400 years earlier than has 16 been previously indicated for the New Zealand region as a whole, and is consistent with recent 17Holocene RSL reconstructions from Australia. In North Island locations the early-Holocene sea-level 18 highstand was quite pronounced, with RSL up to 2.75 m higher than present. In the South Island the 19 onset of highstand conditions was later, with the first attainment of PMSL being between 7,000-20 6,400 cal yr BP. In the mid-Holocene the northern North Island experienced the largest sea-level 21 highstand, with RSL up to 3.00 m higher than present. This is demonstrably higher than the 22 highstand recorded for the southwest North Island and Otago regions. A number of different drivers 23 region, while research from Australia has suggested that north-south variations in Holocene RSL 32 changes due to hydro-isostatic influences are limited or non-existent. At the regional-to local-scale, 33 post-glacial meltwater loading on the continental shelf around New Zealand is predicted by GIA 34 modelling to have a significant effect on the timing and magnitude of RSL changes through the 35 phenomenon of continental levering. The spatial variation in continental levering is controlled by the 36 configuration of the coast and the width of the adjacent continental shelf, with continental levering 37 providing a robust explanation for the observed spatial and temporal variations in RSL changes. 38Further research is required to characterise the regional and local effects of different tectonic 39 regimes, wave climates, and sediment regimes. These are potentially very significant drivers of RSL 40 variability at the regional-to local-scale. However, the magnitude of their potential effects remains 41 equivocal. 42Highlights 43  RSL histories were reconstructed for four regions in the New Zealand archipelago 44  Northern sites experience RSL rise earlier compared to southern sites 45  Northern sites experience a higher-magnitude highstand compared to southern sites 46  Long-wavelength signals from Antarctica cannot explain the observed variation in RSL 47  A range of processes potentiall...

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Sediment flux‐driven channel geometry adjustment of bedrock and mixed gravel–bedrock rivers

Baynes

Lague

Steer

et al. 2020

Earth Surf Processes Landf

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Sediment supply (Q s) is often overlooked in modelling studies of landscape evolution, despite sediment playing a key role in the physical processes that drive erosion and sedimentation in river channels. Here, we show the direct impact of the supply of coarse-grained, hard sediment on the geometry of bedrock channels from the Rangitikei River, New Zealand. Channels receiving a coarse bedload sediment supply are systematically (up to an order of magnitude) wider than channels with no bedload sediment input for a given discharge. We also present physical model experiments of a bedrock river channel with a fixed water discharge (1.5lmin À1) under different Q s (between 0 and 20gl À1) that allow the quantification of the role of sediment in setting the width and slope of channels and the distribution of shear stress within channels. The addition of bedload sediment increases the width, slope and width-to-depth ratio of the channels, and increasing sediment loads promote emerging complexity in channel morphology and shear stress distributions. Channels with low Q s are characterized by simple in-channel morphologies with a uniform distribution of shear stress within the channel while channels with high Q s are characterized by dynamic channels with multiple active threads and a non-uniform distribution of shear stress. We compare bedrock channel geometries from the Rangitikei and the experiments to alluvial channels and demonstrate that the behaviour is similar, with a transition from single-thread and uniform channels to multiple threads occurring when bedload sediment is present. In the experimental bedrock channels, this threshold Q s is when the input sediment supply exceeds the transport capacity of the channel. Caution is required when using the channel geometry to reconstruct past environmental conditions or to invert for tectonic uplift rates, because multiple configurations of channel geometry can exist for a given discharge, solely due to input Q s .

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Sedimentary architecture of a Plio-Pleistocene proto-back-arc basin: Wanganui Basin, New Zealand

Cited by 33 publications

References 95 publications

Fire and slice: palaeogeography for biogeography at New Zealand's North Island/South Island juncture

Fire and slice: palaeogeography for biogeography at New Zealand's North Island/South Island juncture

An examination of spatial variability in the timing and magnitude of Holocene relative sea-level changes in the New Zealand archipelago

Sediment flux‐driven channel geometry adjustment of bedrock and mixed gravel–bedrock rivers

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