Open AccessFOREARC MANTLE METASOMATISM BY 11B-DEPLETED FLUIDS FROM A HIGHLY DEHYDRATED SLAB: A SNAPSHOT OF SLAB ROLL-BACK?
Author(s) -
Yunying Zhang,
Chao Yuan,
Min Sun,
Xiaoping Long,
Yingde Jiang,
Pengfei Li
Publication year - 2017
Publication title -
geodinamika i tektonofizika
Language(s) - English
Resource type - Journals
ISSN - 2078-502X
DOI - 10.5800/gt-2017-8-3-0308
Subject(s) - geology , subduction , slab , forearc , accretionary wedge , convergent boundary , oceanic crust , lithosphere , mantle (geology) , plate tectonics , seismology , petrology , geochemistry , tectonics , geophysics
Accretionary orogens form along convergent plate margins due to the ongoing subduction of oceanic lithosphere, and comprise accretionary prisms, magmatic arcs, back-arc domains, ophiolitic mélanges and possibly oceanic plateaus and continental fragments [Condie, 2007; Cawood et al., 2009]. Based on the dips and velocities of subducting slabs, accretionary orogens can be divided into retreating and advancing type, as exemplified by modern SW Pacific and Andes, respectively [Royden, 1993; Cawood et al., 2009]