New Zealand’s deepwater frontier

Uruski, Chris

doi:10.1016/j.marpetgeo.2010.05.010

Cited by 71 publications

(55 citation statements)

References 30 publications

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“…This magmatic event coincides with and may be genetically related to the opening and separation of Australia and Antarctica, which occurred~33-30 Ma [e.g. Jenkins 1974], and/or the northwards propagation of the Emerald Basin spreading zone [Uruski 2010]. Sill emplacement during the Early Miocene (~19-16 Ma) likely correlates to either the onshore development of the 27-12 Ma Oxford Volcanics in Central Canterbury or the 16-11 Ma Dunedin Volcano on the Otago Peninsula, which is located only~50 km to the WSW of the study area (Figure 2).…”

Section: Tectono-magmatic Contextmentioning

confidence: 74%

“…Figure 2: Tectono-stratigraphic framework of the Canterbury Basin highlighting ages of onshore magmatic events and phases of petroleum system development [after Carter 1988;Fulthorpe et al 1996;Killops et al 1997;Bennett et al 2000;Timm et al 2010;Uruski 2010]. Magmatic events correspond to: A = Geraldine and Timaru Lavas; B = Banks Peninsula; C = Cookson Volcanics; and D = View Hill, Central Canterbury [Timm et al 2010].…”

Section: Dataset and Methodologymentioning

confidence: 99%

“…Fulthorpe et al 1996;Lu and Fulthorpe 2004]. The basement broadly corresponds to the Torlesse Supergroup, a series of Permian-to-Early Cretaceous greywacke and argillite meta-sedimentary rocks [Uruski 2010]. Graben and half-graben formed during the middle Cretaceous phase of rifting broadly strike E-W and were infilled by fluvial and paralic sediments, including coal that forms the main source rock in the region Figure 2) [i.e.…”

Section: Geological Settingmentioning

confidence: 99%

“…Graben and half-graben formed during the middle Cretaceous phase of rifting broadly strike E-W and were infilled by fluvial and paralic sediments, including coal that forms the main source rock in the region Figure 2) [i.e. the Horse Range and Katiki formations; Carter 1988; Killops et al 1997;Uruski 2010;Ghisetti and Sibson 2012]. The onset of passive subsidence and a marine transgression in the Late Cretaceous defined the transition to the post-rift period, characterised stratigraphically by the upwards progression from terrestrial sandstone and coal (i.e.…”

Section: Geological Settingmentioning

confidence: 99%

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Unravelling intrusion-induced forced fold kinematics and ground deformation using 3D seismic reflection data

2018

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Sills emplaced at shallow-levels are commonly accommodated by overburden uplift, producing forced folds. We examine ancient forced folds developed above saucer-shaped sills using 3D seismic reflection data from the Canterbury Basin, offshore SE New Zealand. Seismic-stratigraphic relationships indicate sill emplacement occurred incrementally over~31 Myr between the Oligocene (~35-32 Ma) and Early Pliocene (~5-4 Ma). Two folds display flat-topped geometries and amplitudes that decrease upwards, conforming to expected models of forced fold growth. Conversely, two folds display amplitudes that locally increase upwards, coincident with a transition from flat-topped to dome-shaped morphologies and an across-fold thickening of strata. We suggest these discrepancies between observed and expected forced fold geometry reflect uplift and subsidence cycles driven by sill inflation and deflation. Unravelling these forced fold kinematic histories shows complex intrusion geometries can produce relatively simple ground deformation patterns, where magma transgression corresponds to localisation of uplift.

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Section: Tectono-magmatic Contextmentioning

confidence: 74%

Section: Dataset and Methodologymentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

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Unravelling intrusion-induced forced fold kinematics and ground deformation using 3D seismic reflection data

2018

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“…The northern walls of Nicholson and Wairarapa canyons comprise Torlesse Greywacke Mesozoic basement, which consists of well-indurated and slightly metamorphosed mudstones and silty sandstones (Barnes and Audru 1999). Palliser, Opouawe, Campbell and the deeper part of Lower Cook Strait Canyons are incised in Neogene turbidite sequences (Uruski 2010). The morphological characteristics of each canyon are presented in Table 1.…”

Section: Submarine Canyon Morphologymentioning

confidence: 99%

Deep-Seated Bedrock Landslides and Submarine Canyon Evolution in an Active Tectonic Margin: Cook Strait, New Zealand

Micallef

Mountjoy

Canals

et al. 2011

Submarine Mass Movements and Their Consequences

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The Cook Strait sector of the Hikurangi subduction margin, off south-east central New Zealand, is dominated by a multi-branched canyon system where landslides are widespread. The objective of this study is to determine the character, origin, and influence of these landslides on the evolution of the canyon system. Multibeam bathymetry covering seven submarine canyons is utilised to characterise landslides' spatial distribution, morphological attributes and area-frequency characteristics. We demonstrate that mass movements within the Cook Strait canyons consist of spatially dense, predominantly retrogressive, small, deep-seated, translational bedrock landslides occurring in Late Cenozoic sequences. These landslides affect up to a quarter of the canyoned area. Concentration of landslides in the shallow canyon reaches (down to 800 m) is attributed to the influence of oceanographic processes originating on the continental shelf such as tidegenerated currents, dense shelf water cascading and internal waves. Canyon incision and wall undercutting, locally favoured by underlying lithological control, are proposed as major landslide drivers in Cook Strait. Ground motion during regional earthquakes is considered a secondary cause. Retrogressive landslides are responsible for canyon widening and wall retreat, cross-sectional asymmetry, preconditioning for additional failure, destabilisation of adjacent slopes and delivery of sediment into canyon floors.

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Flying south: Foraging locations of the Hutton's shearwater (Puffinus huttoni) revealed by Time‐Depth Recorders and GPS tracking

Bennet

Horton

Goldstien

et al. 2019

Ecology and Evolution

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The Hutton's shearwater Puffinus huttoni is an endangered seabird endemic to Kaikōura, New Zealand, but the spatial and temporal aspects of its at‐sea foraging behavior are not well known. To identify foraging areas and estimate trip durations, we deployed Global Positioning Systems (GPS) devices and Time‐Depth Recorders (TDR) on 26 adult Hutton's shearwaters during the chick‐rearing period in 2017 and 2018. We found Hutton's shearwaters traveled much further from their breeding grounds at Kaikōura than previously considered, with most individuals foraging in coastal and oceanic areas 125–365 km south and near Banks Peninsula. Trip durations varied from 1 to 15 days (mean = 5 days), and total track lengths varied from 264 to 2,157 km (mean = 1092.9 km). Although some diving occurred in near‐shore waters near the breeding colony, most foraging was concentrated in four regions south of Kaikōura. Dive durations averaged 23.2 s (range 8.1 to 71.3 s) and dive depths averaged 7.1 m (range 1.5 to 30 m). Foraging locations had higher chlorophyll a levels and shallower water depths than nonforaging locations. Birds did not feed at night, but tended to raft in areas with deeper water than foraging locations. Mapping the spatial and temporal distribution of Hutton's shearwaters at sea will be fundamental to their conservation, as it can reveal potential areas of overlap with fisheries and other industrial users of the marine environment.

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New Zealand’s deepwater frontier

Cited by 71 publications

References 30 publications

Unravelling intrusion-induced forced fold kinematics and ground deformation using 3D seismic reflection data

Unravelling intrusion-induced forced fold kinematics and ground deformation using 3D seismic reflection data

Deep-Seated Bedrock Landslides and Submarine Canyon Evolution in an Active Tectonic Margin: Cook Strait, New Zealand

Flying south: Foraging locations of the Hutton's shearwater (Puffinus huttoni) revealed by Time‐Depth Recorders and GPS tracking

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