scholarly journals Structure and growth of the Izu-Bonin-Mariana arc crust: 1. Seismic constraint on crust and mantle structure of the Mariana arc–back-arc system

2008 ◽  
Vol 113 (B1) ◽  
Author(s):  
Narumi Takahashi ◽  
Shuichi Kodaira ◽  
Yoshiyuki Tatsumi ◽  
Yoshiyuki Kaneda ◽  
Kiyoshi Suyehiro
Keyword(s):  
Mantle Structure ◽  
Mariana Arc ◽  
Back Arc ◽  
Crust And Mantle Structure

Crust and mantle structure of the conterminous U.S. from wavelength‐filtered Gravity data

1982 ◽  
Author(s):  
M. F. Kane ◽  
T. G. Hildenbrand ◽  
R. W. Simpson ◽  
R. H. Godson ◽  
R. E. Bracken
Keyword(s):  
Gravity Data ◽  
Mantle Structure ◽  
Crust And Mantle Structure

U–Pb ages of Miocene near-trench granitic rocks of the Southwest Japan arc: implications for magmatism related to hot subduction

2019 ◽  
Vol 158 (1) ◽  
pp. 47-71 ◽  
Author(s):  
Hironao Shinjoe ◽  
Yuji Orihashi ◽  
Ryo Anma
Keyword(s):  
Middle Miocene ◽  
Japan Sea ◽  
Wide Distribution ◽  
Granitic Rocks ◽  
Philippine Sea Plate ◽  
Kii Peninsula ◽  
The Japan Sea ◽  
Igneous Activity ◽  
Mariana Arc ◽  
Back Arc

AbstractWe present a new dataset of zircon U–Pb ages that document igneous activity in the SW Japan arc during middle Miocene time and discuss its relationship with the opening of the Japan Sea, Philippine Sea plate migration, and subduction of the young hot lithosphere of the Shikoku Basin. Precursory magmatism, characterized by dike and stock intrusions, started c. 15.6 Ma in both Kyushu and the Kii Peninsula. Most plutonism occurred between 15.5 and 13.5 Ma in an area 600 km long and 150 km wide. No along-arc trend was recognized in the U–Pb ages of igneous activity near the trench. Our data indicate that all near-trench middle Miocene igneous activity occurred immediately after the opening of the Japan Sea ceased, i.e. after 16 Ma, implying that melt extraction and the emplacement of granites in the near-trench region had some influence on the back-arc opening. Our data also imply that the trench–trench–trench-type triple junction between the Japan arc and the Izu–Bonin–Mariana arc must have reached the east side of the Kii Peninsula by 15.6 Ma. The wide distribution of contemporaneous magmatic activity along the arc requires a trench-parallel heat source, such as the subduction of a trench-parallel ridge or a young and highly segmented ridge–fracture zone system in addition to the hot wedge mantle condition related to the opening of Japan Sea.

scholarly journals Community Structure of Lithotrophically-Driven Hydrothermal Microbial Mats from the Mariana Arc and Back-Arc

2017 ◽  
Vol 8 ◽  
Author(s):  
Kevin W. Hager ◽  
Heather Fullerton ◽  
David A. Butterfield ◽  
Craig L. Moyer
Keyword(s):  
Community Structure ◽  
Microbial Mats ◽  
Mariana Arc ◽  
Back Arc
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