TY - JOUR
T1 - Evolution of late cenozoic magmatism and the crust-mantle structure in the NE japan arc
AU - Yoshida, Takeyoshi
AU - Kimura, Jun Ichi
AU - Yamada, Ryoichi
AU - Acocella, Valerio
AU - Sato, Hiroshi
AU - Zhao, Dapeng
AU - Nakajima, Junichi
AU - Hasegawa, Akira
AU - Okada, Tomomi
AU - Honda, Satoru
AU - Ishikawa, Masahiro
AU - Ardiansyah Prima, Oky Dicky
AU - Kudo, Takeshi
AU - Shibazaki, Bunichiro
AU - Tanaka, Akiko
AU - Imaizumi, Toshifumi
PY - 2014
Y1 - 2014
N2 - We review the evolution of late Cenozoic magmatism in the NE Japan arc, and examine the relationship between the magmatism and the crust-mantle structure. Recent studies reveal secular changes in the mode of magmatic activity, the magma plumbing system, erupted volumes and magmatic composition associated with the evolution of crust-mantle structures related to the tectonic evolution of the arc. The evolution of Cenozoic magmatism in the arc can be divided into three periods: the continental margin (66-21 Ma), the back-arc basin (21- 13.5 Ma) and theisland-arc period (13.5-0 Ma). Magmatic evolution in the back-arc basin and the island-arc periods appears to berelated to the 2D to 3D change in the convection pattern of the mantle wedge related to the asthenosphere upwelling and subsequent cooling of the mantle. Geodynamic changes in the mantle caused back-arc basin basalt eruptions during the back-arc basin opening (basalt phase) followed by crustal heating and re-melting, which generated many felsic plutons and calderas (rhyolite/granite phase) in the early stage of the island-arc period. This was followed by crustal cooling and strong compression, which ensured vent connections and mixing between deeper mafic and shallower felsic magmas, erupting large volumes of Quaternary andesites (andesite phase)
AB - We review the evolution of late Cenozoic magmatism in the NE Japan arc, and examine the relationship between the magmatism and the crust-mantle structure. Recent studies reveal secular changes in the mode of magmatic activity, the magma plumbing system, erupted volumes and magmatic composition associated with the evolution of crust-mantle structures related to the tectonic evolution of the arc. The evolution of Cenozoic magmatism in the arc can be divided into three periods: the continental margin (66-21 Ma), the back-arc basin (21- 13.5 Ma) and theisland-arc period (13.5-0 Ma). Magmatic evolution in the back-arc basin and the island-arc periods appears to berelated to the 2D to 3D change in the convection pattern of the mantle wedge related to the asthenosphere upwelling and subsequent cooling of the mantle. Geodynamic changes in the mantle caused back-arc basin basalt eruptions during the back-arc basin opening (basalt phase) followed by crustal heating and re-melting, which generated many felsic plutons and calderas (rhyolite/granite phase) in the early stage of the island-arc period. This was followed by crustal cooling and strong compression, which ensured vent connections and mixing between deeper mafic and shallower felsic magmas, erupting large volumes of Quaternary andesites (andesite phase)
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U2 - 10.1144/SP385.15
DO - 10.1144/SP385.15
M3 - Article
AN - SCOPUS:84892632103
VL - 385
SP - 335
EP - 387
JO - Geological Society Special Publication
JF - Geological Society Special Publication
SN - 0305-8719
IS - 1
ER -