Radiolarian-bearing conglomerate from the Hayang Group, the Kyongsang Supergroup, southeastern Korea

The non-marine Cretaceous Kyongsang Supergroup, which is divided into the S indong, the Hayang and the Yuchon groups, is widely distributed in southeas tern Korea. Radiolarian-bearing pebbles are collected from the conglomerate s of the Kumidong and the Kisadong formations of the Hayang Group. The age of radiolarian fossils range from Late Permian to Middle Jurassic. In Korea , Permian to Middle Jurassic marine chert beds are not exposed. The directi ons of paleocurrents of the Kumidong and the Kisadong formations are mainly from the northeast to southwest. During Cretaceous time, the Mino-Tamba Be lt, within which Permian to Middle Jurassic chert beds are exposed, is sugg ested to have been located northeast of the Kyongsang Basin. The radiolaria n faunas of the Hayang Group are similar to those of the Mino-Tamba Belt an d other associated Mesozoic accretionary belts in Japan (e.g. the Ashio Bel t). The provenance of the radiolarian-bearing pebbles collected from the Ku midong and the Kisadong formations is interpreted to be the Mino-Tamba Belt and other associated Mesozoic accretionary belts in Japan. (C) 2001 Elsevi er Science Ltd. All rights reserved.