The Nadanhada Terrane in Relation to Mesozoic Tectonics on Continental Margins of East Asia

The Nadanhada terrane, a Jurassic disrupted terrane in Heilongjiang Province of China, is principallycomposed of Permo-Carboniferous limestone and greenstone, Triassic bedded chert and middle Jurassicsiliceous shale, all enclosed within younger (presumably Late Jurassic-Early Cretaceous) clastics. Palaeon-tological and lithological characteristics and structural features of these formations are entirely identical tothose of the Mino terrane of the Japanese Islands. Prior to opening of the Sea of Japan, these terranesformed a single superterrane together with the Western Sikhote-Alin terrane. Tectono-stratigraphic terranesvery similar to the Nadanhada and Mino terranes are also found in the Ryukyu arc, the Philippines andprobably in Borneo. All these terranes constituted a belt of accretionary complexes during Late Jurassicand / or Early Cretaceous time along the eastern continental margin of Asia after completion of the Triassiccollage of the Chinese continent.