supported by the National Key Basic Research Program of China(Grant No.2013CB429701);the National Natural Science Foundation of China(Grant Nos.41606083,91958210,41606050 and 41210005);AoShan Technological Innovation Projects of National Laboratory for Marine Science and Technology(Qingdao)(2015ASKJ03);National Marine Geological Special Project(DD20190236,DD20190365,DD20190377)。
The marginal sea and back-arc basins in the Western Pacific Ocean have become the focus of tectonics due to their unique tectonic location.To understand the deep crustal structure in the back-arc region,we present a 5...