Thermochronology of the Torlesse accretionary complex, Wellington region, New Zealand

Kamp, Peter J.J.

doi:10.1029/2000jb900163

Cited by 36 publications

(49 citation statements)

References 62 publications

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“…The timing of structuring of the accretionary wedge is at least Middle to Late Jurassic, perhaps due to accretion of the Esk Head Melange, thereby changing its taper and thus deformation mode (e.g., Kamp 2000Kamp , 2001Adams et al 2007). Structuring was thus underway before deposition of the Cretaceous Pahau Terrane and its accretion to the front of the wedge.…”

Section: Outboard Accretionary Wedgementioning

confidence: 99%

Different styles of modern and ancient non-collisional orogens and implications for crustal growth: a Gondwanaland perspective

2016

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Non-collisional, convergent margin orogens are generally called accretionary orogens, although there may not have been horizontal accretion across the plate boundary. We revive the term non-collisional orogen and use a Gondwanaland perspective to discuss different types. On the northern margin of the Australian Plate, the New Guinea non-collisional, accretionary orogen was formed by large-scale terrane accretion across an advancing plate margin. On the eastern margin, the Southwest Pacific Orogen is a non-collisional and non-accretionary orogen, involving virtually no horizontal transfer of material across its eastward-retreating plate boundary. In the Tasmanides, the Lachlan Orogen, commonly described as an accretionary orogen, is another non-collisional, non-accretionary orogen developed behind the plate margin after major Cambrian rollback, with resultant backarc basins filled mainly by quartz-rich turbidites subsequently recycled. The outboard New England Orogen is a non-collisional but accretionary orogen, marked by the frontal accretion of continental margin arc detritus, subsequently recycled into younger arcs. The Permian to Cretaceous Rangitata Orogen of New Zealand is an ?oblique non-collisional, accretionary orogen in which Permian-Triassic sediments of the accretionary wedge have no link with inboard (near) arc terranes. Late Jurassic to Cretaceous parts were sourced by a combination of first cycle volcanogenic detritus passing through the forearc basin together with recycling of the exhumed parts of the wedge. All non-collisional orogens involve continental growth, but only the New England Orogen and to a lesser extent the New Guinea Orogen involve significant crustal growth.

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Section: Outboard Accretionary Wedgementioning

confidence: 99%

Different styles of modern and ancient non-collisional orogens and implications for crustal growth: a Gondwanaland perspective

2016

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“…In southern North Island (NI Fig. 2), low temperature metamorphism of sandstones of the accretionary Pahau Subdivision of the Torlesse Terrane (Adams & Graham 1996), and deformation, is dated by zircon fission track data to have occurred in the period 100-85 Ma (Kamp 2000). Deformation is represented, for example, by folded, Upper…”

Section: New Zealandmentioning

confidence: 99%

Episodicity of Mesozoic terrane accretion along the Pacific margin of Gondwana: implications for superplume-plate interactions

Vaughan

Livermore

2005

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A review of evidence for deformation and terrane accretion on the Late Triassic-Early Jurassic margins of Pangaea and the mid-Cretaceous margins of the palaeo-Pacific ocean shows that deformation was global and synchronous with probable superplume events. Late Triassic-Early Jurassic deformation appears to be concentrated in the period 202–197 Ma and was coeval with eruption of the Central Atlantic Magmatic Province, onset of Pangaea break-up, a period of extended normal magnetic polarity and a major mass extinction event, all possible expressions of a superplume event. Mid-Cretaceous deformation occurred in two brief periods, the first from approximately 116 Ma to 110 Ma in the west palaeo-Pacific and the second from roughly 105 Ma to 99 Ma in the east palaeo-Pacific, with both events possibly represented in northeast Siberia. This deformation was coeval with eruption of major oceanic plateaux, core-complex formation and rifting of New Zealand from Gondwana, the Cretaceous normal polarity epoch, and a major radiation of flowering plants and several animal groups, all linked with the mid-Cretaceous superplume event. A simple unifying mechanism is presented suggesting that large continental or oceanic plates, when impacted by a superplume, tend to break-up/reorganize, associated with gravitational spreading away from a broad, thermally generated topographic high and with a resulting short-lived pulse of plate-marginal deformation and terrane accretion.

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“…In testing the fossil ages for the Rakaia Terrane, the general problem faced, in interpreting maximum stratigraphic ages from the radiometric ages, is the degree to which the measured ages have been partially reset in the Torlesse prism. That is, do the single-grain ages reflect only Bishop et al (1985), Mortimer (1995), Mortimer et al (1997), and Kamp (2000).…”

Section: Introductionmentioning

confidence: 99%

Thermochronology of the Torlesse accretionary complex, Wellington region, New Zealand

Cited by 36 publications

References 62 publications

Different styles of modern and ancient non-collisional orogens and implications for crustal growth: a Gondwanaland perspective

Different styles of modern and ancient non-collisional orogens and implications for crustal growth: a Gondwanaland perspective

Episodicity of Mesozoic terrane accretion along the Pacific margin of Gondwana: implications for superplume-plate interactions

Possible Jurassic age for part of Rakaia Terrane: Implications for tectonic development of the Torlesse accretionary prism

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