Subduction plate interface shear stress associated with rapid subduction at deep slow earthquake depths: example from the Sanbagawa belt, southwestern Japan

Y Koyama, SR Wallis, T Nagaya - Solid Earth, 2024 - se.copernicus.org
Maximum shear stress along an active deformation zone marking the subduction plate
interface is important for understanding earthquake phenomena and is an important input …

Oceanic-arc subduction, stagnation, and exhumation: zircon U–Pb geochronology and trace-element geochemistry of the Sanbagawa eclogites in central Shikoku …

S Aoki, K Aoki, T Tsujimori, S Sakata, Y Tsuchiya - Lithos, 2020 - Elsevier
In the Iratsu and the quartz-bearing eclogite bodies of the Sanbagawa high-pressure type
metamorphic belt, southwest Japan, zircon U–Pb dating and trace-element analysis of the …

Brucite as an important phase of the shallow mantle wedge: Evidence from the Shiraga unit of the Sanbagawa subduction zone, SW Japan

H Kawahara, S Endo, SR Wallis, T Nagaya, H Mori… - Lithos, 2016 - Elsevier
Large parts of the shallow mantle wedge are thought to be hydrated due to release of fluids
from the subducting slab and serpentinization of the overlying mantle rocks. If …

Phase equilibria modelling of blueschist and eclogite from the Sanbagawa metamorphic belt of southwest Japan reveals along‐strike consistency in tectonothermal …

OM Weller, SR Wallis, M Aoya… - Journal of Metamorphic …, 2015 - Wiley Online Library
The Sanbagawa metamorphic belt of southwest Japan is one of the type localities of
subduction‐related high‐P metamorphism. However, variable pressure–temperature (P–T) …

Geochemical features and relative B–Li–Cl compositions of deep-origin fluids trapped in high-pressure metamorphic rocks

K Yoshida, T Hirajima, S Ohsawa, T Kobayashi… - Lithos, 2015 - Elsevier
The relationships between the relative B–Li–Cl compositions of deep fluids and their
entrapment depth were investigated by means of geochemical studies of fluid inclusions in …

Progressive evolution of whole‐rock composition during metamorphism revealed by multivariate statistical analyses

K Yoshida, T Kuwatani, T Hirajima… - Journal of …, 2018 - Wiley Online Library
The geochemical evolution of metamorphic rocks during subduction‐related metamorphism
is described on the basis of multivariate statistical analyses. The studied data set comprises …

Orthopyroxene-rich rocks from the Sanbagawa Belt (SW Japan): Fluid–rock interaction in the forearc slab–mantle wedge interface

S Endo, T Mizukami, SR Wallis, A Tamura… - Journal of …, 2015 - academic.oup.com
Abstract The Western Iratsu body of the Sanbagawa belt (SW Japan) is a mafic–ultramafic
complex that underwent an initial metamorphism in the amphibolite facies and a subsequent …

High-pressure garnet amphibolite from the Funaokayama unit, western Kii Peninsula and the extent of eclogite facies metamorphism in the Sanbagawa belt

S Endo, I Nowak, SR Wallis - Journal of Mineralogical and …, 2013 - jstage.jst.go.jp
Quantitative analyses of garnet-bearing epidote amphibolite (hereafter garnet amphibolite)
from the Funaokayama unit, western Kii Peninsula of the Sanbagawa belt reveal a …

Combined FIB microsampling and X-ray microtomography: a powerful tool for the study of tiny fluid inclusions

K Yoshida, T Hirajima, A Miyake… - European Journal …, 2016 - pubs.geoscienceworld.org
Detailed morphological studies including phase-volume estimation were performed on a
natural fluid inclusion in an eclogite-facies rock collected from the Sanbagawa metamorphic …

Decoupling of U–Pb ages and compositional zoning of garnet in a high–pressure marble from the eastern Iratsu body, Sanbagawa metamorphic terrane, Japan

S Niki, K Yoshida, H Sawada, R Oyanagi… - … of Mineralogical and …, 2022 - jstage.jst.go.jp
Here we first report the in situ U–Pb dating of metamorphic grossular garnet (Grs) with
distinction between internal zonation textures. The studied Grs occurs in an eclogite–facies …