Origin of dispersed Permian–Triassic fore-arc basin terranes in New Zealand: Insights from zircon petrochronology

Campbell, Matthew J.; Rosenbaum, Gideon; Allen, Charlotte M.; Mortimer, Nick

doi:10.1016/j.gr.2019.08.010

Cited by 16 publications

(30 citation statements)

References 91 publications

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“…Evidence of Permian to Late Triassic orogenesis is also recognized in eastern Australia, where contractional deformation (Hunter‐Bowen Orogeny) at 270–260 Ma, circa 252 Ma, and 235–230 Ma resulted in folding, thrusting, uplift, development of regional angular unconformities, and the emplacement of I‐type granitoids (e.g., Collins, 1991; Holcombe et al, 1997; Hoy & Rosenbaum, 2017). Our results show that these phases of orogenesis can also be recognized in New Zealand, as expressed by the accretion of the Brook Street Terrane during the middle to latePermian (Campbell, 2020; McCoy‐West et al, 2014; Mortimer, Gans, et al, 1999; Mortimer, Tulloch, et al, 1999; Price et al, 2006), and the subsequent phases of orogenesis at 235–230 Ma (Campbell et al, 2019, 2020; Campbell, 2020; this study). In New Caledonia, the timing of orogenesis recorded in the Téremba intraoceanic island arc, at 247–227 Ma, coincides with the last phase of Hunter‐Bowen Orogeny in eastern Australia (235–230 Ma; Hoy & Rosenbaum, 2017).…”

Section: Discussionmentioning

confidence: 53%

“…These rocks were deposited in a proximal fore-arc basin above a west-dipping subduction zone (Campbell et al, 2019(Campbell et al, , 2020. The Dun Mountain-Maitai Terrane possibly occupied a more distal setting of the same fore-arc basin (Campbell, 2020;Campbell et al, 2019Campbell et al, , 2020.…”

Section: Geological Settingmentioning

confidence: 99%

“…We conducted Lu-Hf isotope analysis on detrital zircon grains from 11 sedimentary rock samples from New Zealand (Table 1) previously dated by Campbell et al (2019Campbell et al ( , 2020 and Campbell (2020) . The samples represent Early Triassic to Middle Jurassic rocks from the Brook Street Terrane (018-TK), Murihiku Terrane (004-NZ, 004-NZ, 013-NZ, 015-NZ, 081-NZ, 083-NZ, and 084-NZ), Dun Mountain-Maitai Terrane (050-NZ and 051-NZ), and Kaka Point Structural Belt (001-NZ).…”

Section: Sample Collection and Preparationmentioning

confidence: 99%

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Continental Crustal Growth Processes Revealed by Detrital Zircon Petrochronology: Insights From Zealandia

et al. 2020

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Establishing spatial, temporal, and geochemical relationships between magmatism and the broader tectonics of accretionary orogens is important for understanding continental crustal growth processes. Here we reconstruct the Paleozoic and Mesozoic evolution of the active continental margin of Zealandia (eastern Gondwana), using a combination of detrital zircon geochronology, trace element geochemistry and Hf isotope data. We find that zircon grains dated 360–160 Ma from New Zealand are characterized by εHfi (+15 to +2) and trace element compositions typical of predominantly juvenile magmatic sources. In contrast, the εHfi (+15 to −5) and trace element compositions of detrital zircon grains dated 245–140 Ma from New Caledonia reflect a mix of juvenile and evolved crustal sources. Secular trends in trace element and Hf isotope compositions of zircon grains suggest that magmatism and continental crustal growth in Zealandia during the Devonian‐Cretaceous were controlled by switches from trench advance to trench retreat. Orogenesis and crustal growth were controlled by a long‐lived westward dipping subduction system, which during the Permian‐Triassic, was intermittently affected by distinct phases of arc accretion (e.g., of the Brook Street intraoceanic arc) and orogenesis (e.g., driven by trench advance). These phases of orogenesis coincided with the Gondwanide Orogen (265–230 Ma), which might have been controlled by a plate‐scale reorganization event following the final assembly of Pangea supercontinent.

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Section: Discussionmentioning

confidence: 53%

Section: Geological Settingmentioning

confidence: 99%

Section: Sample Collection and Preparationmentioning

confidence: 99%

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Continental Crustal Growth Processes Revealed by Detrital Zircon Petrochronology: Insights From Zealandia

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“…1A-B, F). The Eastern Province consists of dominantly Permian to Early Cretaceous accreted terranes composed of sedimentary and metasedimentary terranes (Murihiku, Caples, Torlesse, Waipapa Terranes, and Haast Schist), an ophiolite belt (Dun Mountain/Maitai Terrane), and an intraoceanic island arc terrane (Brook Street Terrane) (Landis and Coombs, 1967;Frost and Coombs, 1989;Bradshaw, 1993;Mortimer et al, 1999a;Tulloch et al, 1999a;Mortimer, 2004;Campbell et al, 2020).…”

Section: Regional Geology Of the Median Batholithmentioning

confidence: 99%

Stable and transient isotopic trends in the crustal evolution of Zealandia Cordillera

Schwartz

Andico

Turnbull

et al. 2021

American Mineralogist

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We present >500 zircon δ 18 O and Lu-Hf isotope analyses on previously dated zircons to explore the interplay between spatial and temporal magmatic signals in Zealandia Cordillera. Our data cover ~8,500 km 2 of middle and lower crust in the Median Batholith (Fiordland segment of Zealandia Cordillera) where Mesozoic arc magmatism along the paleo-Pacific margin of Gondwana was focused along an ~100 km-wide, arc-parallel zone. Our data reveal three spatially distinct isotope domains which we term the eastern, central and western isotope domains. These domains parallel the Mesozoic arc-axis and their boundaries are defined by major crustal-scale faults that were reactivated as ductile shear zones during the Early Cretaceous. The western isotope domain has homogenous, mantle-like δ 18 O (Zrn) values of 5.8 ± 0.3‰ (2SD) and initial ε Hf (Zrn) values of +4.2 ± This is the peer-reviewed, final accepted version for American Mineralogist, published by the Mineralogical Society of America. The published version is subject to change. Cite as Authors (Year) Title. American Mineralogist, in press.

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“…the conclusion of ; see Appendix 1), it may have been derived from a continental sliver that was rifted from proto-Australia during or before the Early Permian see Chapter 4). Evidence presented in this thesis supports this idea, as does recent work on Gympie Terrane equivalents in New Zealand and New Caledonia (Campbell et al, 2020).…”

Section: Possibilities For Future Worksupporting

confidence: 79%

The Hunter - Bowen Orogeny in eastern Australia

Hoy¹

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Origin of dispersed Permian–Triassic fore-arc basin terranes in New Zealand: Insights from zircon petrochronology

Cited by 16 publications

References 91 publications

Continental Crustal Growth Processes Revealed by Detrital Zircon Petrochronology: Insights From Zealandia

Continental Crustal Growth Processes Revealed by Detrital Zircon Petrochronology: Insights From Zealandia

Stable and transient isotopic trends in the crustal evolution of Zealandia Cordillera

The Hunter - Bowen Orogeny in eastern Australia

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