Tectonic history of granitic bodies in the South Fossa Magna region, central Japan: new evidence from fission-track analysis of zircon

Ito, Hisatoshi; Sorkhabi, Rasoul; Tagami, Takahiro; Nishimura, Susumu

doi:10.1016/0040-1951(89)90284-9

Cited by 27 publications

(26 citation statements)

References 18 publications

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“…A whole-rock K-Ar age of 10.7 Ma was obtained by Tsunoda et al (1992). Itoh et al (1989) reported fission-track zircon ages of 9.4 Ma from this pluton. Recent sensitive highresolution ion microprobe (SHRIMP) U-Pb zircon dating of the pluton gives an age of 13.9-12.7 Ma, interpreted as the crystallization age of the pluton (Tani 2011).…”

Section: Geological Backgroundmentioning

confidence: 95%

“…They attributed the chemical diversity of parent magmas within the Kofu granitic complex to variable contributions of the Honshu arc metasedimentary component in the source region. However, a petrogenetic model for the Kaikomagatake granitoid pluton has not been proposed, despite numerous geological and petrologic studies (e.g., Otsuka 1940;Shibata and Kobayashi 1965;Fujimoto et al 1965;Yamada et al 1983;Shimamoto et al 1991) and geochronological investigations (Kawano and Ueda 1966;Itoh et al 1989;Sato et al 1989;Tsunoda et al 1992;Tani 2011).…”

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confidence: 97%

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Petrogenesis of the Kaikomagatake granitoid pluton in the Izu Collision Zone, central Japan: implications for transformation of juvenile oceanic arc into mature continental crust

Saito

Arima

Nakajima

et al. 2011

Contrib Mineral Petrol

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The Miocene Kaikomagatake pluton is one of the Neogene granitoid plutons exposed in the Izu Collision Zone, which is where the juvenile Izu-Bonin oceanic arc is colliding against the mature Honshu arc. The pluton intrudes into the Cretaceous to Paleogene Shimanto accretionary complex of the Honshu arc along the Itoigawa-Shizuoka Tectonic Line, which is the collisional boundary between the two arcs. The pluton consists of hornblende-biotite granodiorite and biotite monzogranite, and has SiO 2 contents of 68-75 wt%. It has high-K series compositions, and its incompatible element abundances are comparable to the average upper continental crust. Major and trace element compositions of the pluton show well-defined chemical trends. The trends can be interpreted with a crystal fractionation model involving the removal of plagioclase, biotite, hornblende, quartz, apatite, and zircon from a potential parent magma with a composition of *68 wt% SiO 2 . The Sr isotopic compositions, together with the partial melting modeling results, suggest that the parent magma is derived by *53% melting of a hybrid lower crustal source comprising *30% Shimanto metasedimentary rocks of the Honshu arc and *70% K-enriched basaltic rocks of the Izu-Bonin rear-arc region. Together with previous studies on the Izu Collision Zone granitoid plutons, the results of this study suggest that the chemical diversity within the parental magmas of the granitoid plutons reflects the chemical variation of basaltic sources (i.e., across-arc chemical variation in the Izu-Bonin arc), as well as a variable contribution of the metasedimentary component in the lower crustal source regions. In addition, the petrogenetic models of the Izu Collision Zone granitoid plutons collectively suggest that the contribution of the metasedimentary component is required to produce granitoid magma with compositions comparable to the average upper continental crust. The Izu Collision Zone plutons provide an exceptional example of the transformation of a juvenile oceanic arc into mature continental crust.

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Section: Geological Backgroundmentioning

confidence: 95%

mentioning

confidence: 97%

Petrogenesis of the Kaikomagatake granitoid pluton in the Izu Collision Zone, central Japan: implications for transformation of juvenile oceanic arc into mature continental crust

Saito

Arima

Nakajima

et al. 2011

Contrib Mineral Petrol

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“…K Ar ages of the Ashigawa intrusion and the southern part of the Tokuwa intrusion are 11.6 12.9 Ma (hornblende) and 11.9 12.5 Ma (biotite) . Fission track analysis of zircon from the Ashigawa (11.9 ± 0.4 Ma), Tonogi (10.3 ± 1.0 Ma) and a southern part of the Tokuwa intrusions (12.5 ± 1.4 Ma) were reported by Itoh et al (1989).…”

Section: Geological Backgroundmentioning

confidence: 97%

Petrogenesis of Ashigawa and Tonogi granitic intrusions, southern part of the Miocene Kofu Granitic Complex, central Japan: M-type granite in the Izu arc collision zone

Saito

Arima

Nakajima

et al. 2004

Journal of Mineralogical and Petrological Sciences

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The Ashigawa and the Tonogi intrusions comprise the southern part of the Miocene Kofu Granitic Complex (KGC), which is the largest pluton exposed in the Izu collision zone. The Ashigawa intrusion mainly consists of tonalite and subordinate amounts of trondhjemite, and the Tonogi intrusion is predominantly composed of tonalite. The rocks in both intrusions are classified as M type granite. These are characterized by relatively low K 2 O (<1.9 wt.%) and Rb (<48 ppm) and LREE enriched chondrite normalized REE patterns with a marked negative Eu anomaly. Compared to the Tanzawa tonalites distributed in the south of the KGC, the Ashigawa and Tonogi granitic rocks have higher LILE, REE and Sr isotope compositions at a given whole rock SiO 2 content. Although the Ashigawa intrusion has distinctly different petrographical and geochemical characteristics from the Tonogi intrusion, both intrusions exhibit nearly identical Sr isotopic composition (0.7037 0.7043 at 13Ma) and well defined variation in whole rock compositions, suggesting that they are comagmatic. The crystal fractionation modeling involving removals of amphibole, plagioclase and magnetite from a tonalitic parental magma composition well represents the major and trace element variation of the Ashigawa and Tonogi granitic rocks. The Rayleigh fractionation modeling for whole rock REE abundance is also in a good agreement with the observed whole rock data. Mass balance modeling suggests that the proposed tonalitic parental magma can be derived by 40 % melting of hydrous basalt compositionally similar to the basalt occurring in the rift basin of northern Izu Bonin arc. Anatexis of hydrous basaltic lower crust of the northern Izu Bonin arc is a likely process for the formation of Ashigawa Tonogi parental magma.

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“…[], Ito et al . [], Tagami and Shibata [], Yamagiwa et al . [], and Yamagiwa [MS]; section sign: active fault traces from Nakata and Imaizumi [];dagger: Quaternary volcanoes from Committee for Catalog of Quaternary Volcanoes in Japan []; and double dagger: distribution and classification of low‐relief eroded surfaces from Sugai [, ].…”

Section: Geomorphic and Geologic Settingsmentioning

confidence: 99%

“…Apatite and zircon FT (AFT and ZFT) ages from the Akaishi Range have been previously reported [ Tagami et al ., ; Ito et al ., ; Tagami and Shibata , ; Yamagiwa et al ., ; Yamagiwa , MS] (Figures ). Tagami et al .…”

Section: Geomorphic and Geologic Settingsmentioning

confidence: 99%

Uplift and denudation history of the Akaishi Range, a thrust block formed by arc‐arc collision in central Japan: Insights from low‐temperature thermochronometry and thermokinematic modeling

et al. 2017

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Fission track (FT), (U‐Th)/He (He), and U‐Pb data were used to identify the denudation history of the Akaishi Range, central Japan. The northern Akaishi Range is bounded on the east by the Itoigawa‐Shizuoka Tectonic Line Fault Zone (ISTL‐FZ). The thermochronometric ages progressively decrease with the decreasing distance to the ISTL‐FZ. Thermokinematic calculations suggest that the age pattern observed can be explained by 5–7.5 mm/yr reverse slip on the ISTL‐FZ that dips 34–45° west and soles onto detachment at 20–22.5 km depth. By assuming the same geometry and slip rate of the fault, the bedrock uplift rates and denudation rates are estimated at ~4 mm/yr. Thus, the uplift and denudation style of the northern Akaishi Range is well explained as a simple tilted thrust block that has been exhumed along the listric ISTL‐FZ. On the other hand, considering both the difference in apatite FT age and the active fault distribution, the southern Akaishi Range might be different in uplift origin and timing, although the difference in apatite FT ages between them may be attributable to the chlorine content variation in apatite. The inferred total denudation is larger than several kilometers and likely exceeds 10 km since the beginning of the northern Akaishi Range uplift, suggesting that the low‐relief surfaces on the ridges and the relatively constant elevations of the summits reflect postuplift denudation rather than preexisting low‐relief landforms.

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Tectonic history of granitic bodies in the South Fossa Magna region, central Japan: new evidence from fission-track analysis of zircon

Cited by 27 publications

References 18 publications

Petrogenesis of the Kaikomagatake granitoid pluton in the Izu Collision Zone, central Japan: implications for transformation of juvenile oceanic arc into mature continental crust

Petrogenesis of the Kaikomagatake granitoid pluton in the Izu Collision Zone, central Japan: implications for transformation of juvenile oceanic arc into mature continental crust

Petrogenesis of Ashigawa and Tonogi granitic intrusions, southern part of the Miocene Kofu Granitic Complex, central Japan: M-type granite in the Izu arc collision zone

Uplift and denudation history of the Akaishi Range, a thrust block formed by arc‐arc collision in central Japan: Insights from low‐temperature thermochronometry and thermokinematic modeling

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