Abstract:
The heterogeneous different-aged terranes constituting the Pacific margin of Asia include numerous fragments of ancient accretionary prisms. One of these is the Jurassic prism, exposed over more than 5000 km from the left bank of the lower reaches of the Amur River via Sikhote-Alin, Nadanhada-Alin (northeastern China), Japan, and Taiwan Island to Palavan Island (the Philippines). Accretionary prisms are developed in zones of direct interaction between lithospheric plates. Consequently, they bear information on the succession and character of relevant events in the region. In this connection, the study of ancient accretionary prisms is important for specifying the structure of corresponding regions and their geological evolution. Such studies also provide data for understanding specific features of accretion in various areas of the convergent boundary, as well as the correlation of geological events at the junction of lithospheric plates.
