Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan

Tani, Kazuo; Dunkley, Daniel J.; Kimura, Jun–Ichi; Wysoczanski, Richard J.; Yamada, Kunimi; Tatsumi, Yoshiyuki

doi:10.1130/g30526.1

Cited by 75 publications

(57 citation statements)

References 21 publications

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“…This means that the assumed T C of (U-Th)/ He age, 180°C, is low and not suitable for the cooling rates. Smaller intervals between Ti-in-zircon temperatures for U-Pb age and T C of (U-Th)/He age produced slightly lower cooling rates compared to those given in Tani et al (2010) as shown in Table 2.…”

Section: Tanzawa Plutonic Complex In Izu Collision Zone Central Japanmentioning

confidence: 74%

“…Effective radii of zircons of the dated samples, 60 µm, are from Yamada and Tagami (2008). Our results shown in Table 2 indicate that slightly higher T C of (U-Th)/He ages and slightly slower cooling compared to those given by Tani et al (2010). This means that the assumed T C of (U-Th)/ He age, 180°C, is low and not suitable for the cooling rates.…”

Section: Tanzawa Plutonic Complex In Izu Collision Zone Central Japanmentioning

confidence: 74%

Section: Tanzawa Plutonic Complex In Izu Collision Zone Central Japanmentioning

confidence: 99%

“…Tani et al (2010) concluded that the Tanzawa complex was not denuded middle crust of the IBM arc but formed during arc-arc collision. Tani et al (2010) calculated cooling rates of the Tanzawa pluton using U-Pb and (U-Th)/He ages of zircon. They used Ti-in-zircon temperatures instead of T C for U-Pb ages, and assumed that T C for (UTh)/He ages is 180°C according to Yamada and Tagami (2008).…”

Section: Tanzawa Plutonic Complex In Izu Collision Zone Central Japanmentioning

confidence: 99%

See 3 more Smart Citations

A procedure for calculating a consistent set of closure temperatures and cooling rate using Dodson’s formula

Maeda

Zeniya

Kuramoto

et al. 2011

Jour. Geol. Soc. Japan

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Section: Tanzawa Plutonic Complex In Izu Collision Zone Central Japanmentioning

confidence: 74%

Section: Tanzawa Plutonic Complex In Izu Collision Zone Central Japanmentioning

confidence: 74%

Section: Tanzawa Plutonic Complex In Izu Collision Zone Central Japanmentioning

confidence: 99%

Section: Tanzawa Plutonic Complex In Izu Collision Zone Central Japanmentioning

confidence: 99%

See 2 more Smart Citations

A procedure for calculating a consistent set of closure temperatures and cooling rate using Dodson’s formula

Maeda

Zeniya

Kuramoto

et al. 2011

Jour. Geol. Soc. Japan

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“…1 -Kawate and Arima, 1998-Taira et al, 1998Kitamura et al, 2003Tani et al 2010 Mikami, 1962Ishida, 1969, 1952, 1966, 1968, 1974, 1980Kawate andArima, 1998 , 1958;, 1997 -Ito andMasuda, 1986;Amano, 1991;Soh, 1986;Soh et al, 1998;1972-, 2000 …”

mentioning

confidence: 99%

Geology of the Tanzawa Mountains, Japan:

Ishikawa

Tani

Kuwatani

et al. 2016

Jour. Geol. Soc. Japan

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Geochemical and isotopic study of a plutonic suite and related early volcanic sequences in the southern Mariana forearc

Hickey‐Vargas

Fryer²,

Salters

et al. 2014

Geochem Geophys Geosyst

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The forearc of the southern Mariana arc preserves igneous suites formed during the initiation of subduction between the Pacific and Philippine Sea plates about 50 Ma ago. We have studied rare suites of gabbroic to tonalitic plutonic rocks dredged from two locations in the Mariana forearc by cruise by University of Hawai'i cruise KK81-06-26. Comparison of the chemical and isotopic (Sr, Nd, Pb, and Hf) characteristics of these rocks with well-studied volcanics from the forearc reveals that the plutonics from dredge RD63 and RD64 are chemically related to boninites erupted at 48-43 Ma. This is the first report of boninitelike plutonics in the southern Mariana trench. These suites have trace element characteristics consistent with island arc settings (U/Th: 0.58-1.44, Nb/La: 0.18-0.79) and other features uniquely connected with boninites: TiO 2 < 0.15 wt % and Zr/Sm > 25. RD63 plutonics resemble nearby boninite volcanics and were likely derived from differentiated boninite magma with 58% SiO 2 , forming gabbro by crystal accumulation, diorite and quartz diorite by crystallization, and tonalite by crystallization and/or partial melting. The RD64 suite (gabbro through tonalite) may have had a more depleted magma source and formed by accumulation and crystallization only. Although the physical dimensions of the plutonic body are unknown, the relationship with boninites indicates that felsic intrusives can form during early stages of island arc development. Such rocks could form part of midcrustal low-velocity layers detected in arc crust by seismic studies. Tonalites similar to those studied here are also found in some ophiolites.

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Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan

Cited by 75 publications

References 21 publications

A procedure for calculating a consistent set of closure temperatures and cooling rate using Dodson’s formula

A procedure for calculating a consistent set of closure temperatures and cooling rate using Dodson’s formula

Geology of the Tanzawa Mountains, Japan:

Geochemical and isotopic study of a plutonic suite and related early volcanic sequences in the southern Mariana forearc

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