Evolution of the tertiary volcanic rocks in the Izu-Mariana arc

Shiraki, Keiichi; Kuroda, Naoshi; Maruyama, Shigenori; Urano, Hayaomi

doi:10.1007/bf02597386

Cited by 37 publications

(13 citation statements)

References 30 publications

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“…Finally, it seems evident that there are different types of HMA in subduction-related settings; some are primitive and result from interaction of a melt derived from subducted oceanic basaltic crust and the overlying mantle wedge peridotite (Shiraki et al, 1978;Meijer, 1980;Crawford et al, 1981;Tatsumi and Ishizaka, 1982;Xu et al, 2000) and others are more evolved and result from interaction of melt derived from subducted oceanic crust and the continental magmatic arc.…”

Section: Geodynamic Interpretationmentioning

confidence: 99%

Neoproterozoic subduction-related metavolcanic and metasedimentary rocks from the Rey Bouba Greenstone Belt of north-central Cameroon in the Central African Fold Belt: New insights into a continental arc geodynamic setting

Bouyo

Zhao

Pénaye

et al. 2015

Precambrian Research

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Section: Geodynamic Interpretationmentioning

confidence: 99%

Neoproterozoic subduction-related metavolcanic and metasedimentary rocks from the Rey Bouba Greenstone Belt of north-central Cameroon in the Central African Fold Belt: New insights into a continental arc geodynamic setting

Bouyo

Zhao

Pénaye

et al. 2015

Precambrian Research

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“…It is now generally accepted that most andesites are not primary mantle melts, but are instead derivatives of basaltic magmas. Kuroda et al (1978) proposed that boninites were primary melts that formed under high P H2O conditions. A number of experimental studies (e.g., Kushiro, 1972Kushiro, , 1974Green, 1973bGreen, , 1976Tatsumi, 1981;Umino and Kushiro, 1989;van der Laan et al, 1989) indicate that it is possible to derive silicic boninite-like magmas from mantle material with fairly high degrees of partial melting under water-saturated conditions and at pressures less than 15 kbar.…”

Section: Boninite As a Primary Mantle Meltmentioning

confidence: 99%

“…A generally accepted scenario for boninite magma genesis (e.g. Shiraki et al, 1978;Sun and Nesbitt, 1978;Hickey and Frey, 1982) is that boninite lavas are derived from depleted mantle material from the mantle wedge above subduction zones. Upwards moving fluids from dehydrating downgoing oceanic lithosphere promote melting of this refractory material where sufficient heat is available and enrich the source in large-ion lithophile elements.…”

Section: Summary Of Petrologic and Geochemical Observationsmentioning

confidence: 99%

Petrology and Geochemistry of Boninite-Series Volcanic Rocks, Chichi-Jima, Bonin Islands, Japan

Dobson

Blank

Maruyama

et al. 2006

International Geology Review

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An Eocene submarine boninite series volcanic center is exposed on the island of Chichi-jima, Bonin Islands, Japan. Five rock types, boninite, bronzite andesite, dacite, quartz dacite, and rhyolite, were distinguished within the boninite volcanic sequence on the basis of petrographic and geochemical observations. Boninite lavas contain high magnesium, nickel, and chromium contents indicative of primitive melts, but have high silica contents relative to other mantlederived magmas. All boninite series lavas contain very low incompatible element concentrations, and concentrations of high-field strength elements in primitive boninite lavas are less than half of those found in depleted mid-ocean ridge basalts. Abundances of large-ion lithophile elements are relatively high in boninite series lavas, similar to the enrichments observed in many island arc lavas. Trends for both major and trace element data suggest that the more evolved lavas of the boninite magma series were derived primarily through high-level fractional crystallization of boninite. Textural features, such as resorption and glomeroporphyrocrysts, and reverse chemical zonations suggest that magma mixing contributed to the development of the quartz dacite lavas.

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“…Mantle melting associated with subduction beneath an active or dying oceanic ridge system (van der Laan, 1987) or beneath young, hot oceanic lithosphere (Sharaki et al, 1978;Meijer, 1980). 4.…”

Section: Introductionmentioning

confidence: 99%

Boninite and Harzburgite from Leg 125 (Bonin-Mariana Forearc): A Case Study of Magma Genesis during the Initial Stages of Subduction

Pearce¹,

Laan²,

Arculus³

et al. 1992

Proceedings of the Ocean Drilling Program

289

273

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Holes drilled into the volcanic and ultrabasic basement of the Izu-Ogasawara and Mariana forearc terranes during Leg 125 provide data on some of the earliest lithosphere created after the start of Eocene subduction in the Western Pacific. The volcanic basement contains three boninite series and one tholeiite series. (1) Eocene low-Ca boninite and low-Ca bronzite andesite pillow lavas and dikes dominate the lowermost part of the deep crustal section through the outer-arc high at Site 786. (2) Eocene intermediate-Ca boninite and its fractionation products (bronzite andesite, andesite, dacite, and rhyolite) make up the main part of the boninitic edifice at Site 786. (3) Early Oligocene intermediate-Ca to high-Ca boninite sills or dikes intrude the edifice and perhaps feed an uppermost breccia unit at Site 786. (4) Eocene or Early Oligocene tholeiitic andesite, dacite, and rhyolite form the uppermost part of the outer-arc high at Site 782. All four groups can be explained by remelting above a subduction zone of oceanic mantle lithosphere that has been depleted by its previous episode of partial melting at an ocean ridge. We estimate that the average boninite source had lost 10-15 wt% of melt at the ridge before undergoing further melting (5-10%) shortly after subduction started. The composition of the harzburgite (<2% clinopyroxene, Fo content of about 92%) indicates that it underwent a total of about 25% melting with respect to a fertile MORB mantle. The low concentration of Nb in the boninite indicates that the oceanic lithosphere prior to subduction was not enriched by any asthenospheric (OIB) component.The subduction component is characterized by (1) high Zr and Hf contents relative to Sm, Ti, Y, and middle-heavy REE, (2) light REE-enrichment, (3) low contents of Nb and Ta relative to Th, Rb, or La, (4) high contents of Na and Al, and (5) Pb isotopes on the Northern Hemisphere Reference Line. This component is unlike any subduction component from active arc volcanoes in the Izu-Mariana region or elsewhere. Modeling suggests that these characteristics fit a trondhjemitic melt from slab fusion in amphibolite facies. The resulting metasomatized mantle may have contained about 0.15 wt% water. The overall melting regime is constrained by experimental data to shallow depths and high temperatures (1250°C and 1.5 kb for an average boninite) of boninite segregation. We thus envisage that boninites were generated by decompression melting of a diapir of metasomatized residual MORB mantle leaving the harzburgites as the uppermost, most depleted residue from this second stage of melting. Thermal constraints require that both subducted lithosphere and overlying oceanic lithosphere of the mantle wedge be very young at the time of boninite genesis. This conclusion is consistent with models in which an active transform fault offsetting two ridge axes is placed under compression or transpression following the Eocene plate reorganization in the Pacific. Comparison between Leg 125 boninites and boninites and related rocks e...

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Evolution of the tertiary volcanic rocks in the Izu-Mariana arc

Cited by 37 publications

References 30 publications

Neoproterozoic subduction-related metavolcanic and metasedimentary rocks from the Rey Bouba Greenstone Belt of north-central Cameroon in the Central African Fold Belt: New insights into a continental arc geodynamic setting

Neoproterozoic subduction-related metavolcanic and metasedimentary rocks from the Rey Bouba Greenstone Belt of north-central Cameroon in the Central African Fold Belt: New insights into a continental arc geodynamic setting

Petrology and Geochemistry of Boninite-Series Volcanic Rocks, Chichi-Jima, Bonin Islands, Japan

Boninite and Harzburgite from Leg 125 (Bonin-Mariana Forearc): A Case Study of Magma Genesis during the Initial Stages of Subduction

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