Recognition of mid-Paleozoic volcanism in New Zealand
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Recognition of mid-Paleozoic volcanism in New Zealand. / Turnbull, R.; van der Meer, Quinten; Tulloch, AJ; Ramezani, J.; Whitehouse, M.; Andersen, T.; Waight, Tod Earle.
In: New Zealand Journal of Geology and Geophysics, Vol. 61, No. 4, 2018, p. 413-427.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Recognition of mid-Paleozoic volcanism in New Zealand
AU - Turnbull, R.
AU - van der Meer, Quinten
AU - Tulloch, AJ
AU - Ramezani, J.
AU - Whitehouse, M.
AU - Andersen, T.
AU - Waight, Tod Earle
PY - 2018
Y1 - 2018
N2 - Two felsic volcanic clasts from conglomerates in Fiordland and northwest Nelson provide U–Pb zircon ages of 359 and c. 362 Ma respectively; ages that occur within the interval between voluminous Western Province plutonic S-type magmatism of the Karamea and Ridge suites. Both volcanic clasts have inherited zircon populations, and trace element signatures suggesting derivation from crustal melts. The dacitic clast from the mid-Cretaceous Seek Cove Formation in southwest Fiordland has whole-rock chemistry and an O–Hf–zircon isotopic signature consistent with derivation from the Takaka Terrane. A rhyolite clast from the Pupu Conglomerate in northwest Nelson also has chemistry consistent with derivation from a Takaka Terrane source. We therefore correlate both volcanic clasts to the S-type Ridge Suite. No comparable S-type plutonic source of the same age has been recognised in the northwest Nelson section of the Takaka Terrane. These volcanic clasts represent the oldest recognised episode of S-type Ridge Suite magmatism in the Takaka Terrane.
AB - Two felsic volcanic clasts from conglomerates in Fiordland and northwest Nelson provide U–Pb zircon ages of 359 and c. 362 Ma respectively; ages that occur within the interval between voluminous Western Province plutonic S-type magmatism of the Karamea and Ridge suites. Both volcanic clasts have inherited zircon populations, and trace element signatures suggesting derivation from crustal melts. The dacitic clast from the mid-Cretaceous Seek Cove Formation in southwest Fiordland has whole-rock chemistry and an O–Hf–zircon isotopic signature consistent with derivation from the Takaka Terrane. A rhyolite clast from the Pupu Conglomerate in northwest Nelson also has chemistry consistent with derivation from a Takaka Terrane source. We therefore correlate both volcanic clasts to the S-type Ridge Suite. No comparable S-type plutonic source of the same age has been recognised in the northwest Nelson section of the Takaka Terrane. These volcanic clasts represent the oldest recognised episode of S-type Ridge Suite magmatism in the Takaka Terrane.
U2 - 10.1080/00288306.2018.1469513
DO - 10.1080/00288306.2018.1469513
M3 - Journal article
VL - 61
SP - 413
EP - 427
JO - New Zealand Journal of Geology, and Geophysics
JF - New Zealand Journal of Geology, and Geophysics
SN - 0028-8306
IS - 4
ER -
ID: 195498957