Whole-rock geochemical reference data for Torlesse and Waipapa terranes, North Island, New Zealand

Price, R.H.; Mortimer, Nick; Smith, I. E.; Maas, Roland

doi:10.1080/00288306.2015.1026832

Cited by 56 publications

(92 citation statements)

References 65 publications

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“…B contents were also determined for two metagraywackes of the Torlesse Fm., North Island, NZ; these contain an average of 51.5 ppm B (i.e., similar to observations of Ellis and Sewell []). Together with ICPMS data for average Torlesse greywacke [ Price et al ., ], these results allow provisional estimates of B/Zr and B/Nb in the crustal basement proximal to the Taupo Volcanic Zone (TVZ). Because weighted average compositions of these sediments [cf.…”

Section: Resultsmentioning

confidence: 92%

“…Because weighted average compositions of these sediments [cf. Plank , ; Turner et al ., ; Price et al ., ] are likely to be more representative of bulk subducted sediment packages, such estimates are reported in supporting information Table S1 and used in most diagrams in this paper.…”

Section: Resultsmentioning

confidence: 99%

“…Finally, data for DSDP/ODP core samples outboard of the Tongan subduction zone provide some constraints on the nature of subducted sediments in this arc. Plank, 2014;Price et al, 2015] are likely to be more representative of bulk subducted sediment packages, such estimates are reported in supporting information Table S1 and used in most diagrams in this paper.…”

Section: Resultsmentioning

confidence: 99%

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Boron isotope variations in Tonga‐Kermadec‐New Zealand arc lavas: Implications for the origin of subduction components and mantle influences

Leeman

Tonarini

Turner

2017

Geochem Geophys Geosyst

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The Tonga‐Kermadec‐New Zealand volcanic arc is an end‐member of arc systems with fast subduction suggesting that the Tonga sector should have the coolest modern slab thermal structure on Earth. New data for boron concentration and isotopic composition are used to evaluate the contrasting roles of postulated subduction components (sediments and oceanic slab lithologies) in magma genesis. Major observations include: (a) Tonga‐Kermadec volcanic front lavas are enriched in B (as recorded by B/Nb and similar ratios) and most have relatively high δ11B (>+4‰), whereas basaltic lavas from New Zealand have relatively low B/Nb and δ11B (<−3.5‰); (b) both δ11B and B/Nb generally increase northward from New Zealand along with convergence rate and overall slab flux; (c) δ11B and B/Nb decrease toward the back‐arc, as observed elsewhere; and (d) low δ11B is observed in volcanic front samples from Ata, an anomalous sector where the back‐arc Valu Fa Spreading Center impinges on the arc and the Louisville Seamount Chain is presently subducting. Otherwise, volcanic front lavas exhibit positive correlations for both B/Nb and δ11B with other plausible indicators of slab‐derived fluid contributions (e.g., Ba/Nb, U/Th, (230Th/232Th) and 10Be/9Be), and with estimated degree of melting to produce the mafic lavas. Inferred B‐enrichments in the arc magma sources are likely dominated by serpentinite domains deeper within the subducting slab (±altered oceanic crust), and B systematics are consistent with dominant transport by slab‐derived aqueous fluids. Effects of this process are amplified by mantle wedge source depletion due to prior melt extraction.

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Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Boron isotope variations in Tonga‐Kermadec‐New Zealand arc lavas: Implications for the origin of subduction components and mantle influences

Leeman

Tonarini

Turner

2017

Geochem Geophys Geosyst

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“…Cretaceous seamounts with highly radiogenic Pb that erupted through the Hikurangi Plateau Price et al, 2015). A: Cretaceous Arnott Basalt (Timm et al, 2010). are isotopically similar to post-plateau basaltic magmatism on the once-contiguous Manihiki and Ontong-Java plateaux (Tejada et al, 1996;Ingle et al, 2007), which formed and separated in the Early Cretaceous .…”

Section: Model For the Creation Of A Complex Intraplate Magmatic Provmentioning

confidence: 99%

“…Grey lines indicate binary mixing between Tasman MORB, calc-alkaline lamprophyre and Cretaceous Eastern Province volcanism with crosses at 10% intervals. Peach field in G and H represents the 207 Pb/ 204 Pb (90 Ma) of the Mesozoic Gondwana Arc after the data compilation by Price et al (2015).…”

Section: Crustal Contamination Fractional Crystallisation and The Almentioning

confidence: 99%

Variable sources for Cretaceous to recent HIMU and HIMU-like intraplate magmatism in New Zealand

Meer

Waight²,

Scott

et al. 2017

Earth and Planetary Science Letters

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Primitive andesites from the Taupo Volcanic Zone formed by magma mixing

Beier

Haase

Brandl

et al. 2017

Contrib Mineral Petrol

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Whole-rock geochemical reference data for Torlesse and Waipapa terranes, North Island, New Zealand

Cited by 56 publications

References 65 publications

Boron isotope variations in Tonga‐Kermadec‐New Zealand arc lavas: Implications for the origin of subduction components and mantle influences

Boron isotope variations in Tonga‐Kermadec‐New Zealand arc lavas: Implications for the origin of subduction components and mantle influences

Variable sources for Cretaceous to recent HIMU and HIMU-like intraplate magmatism in New Zealand

Primitive andesites from the Taupo Volcanic Zone formed by magma mixing

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