@article{oai:nagoya.repo.nii.ac.jp:00006030,
 author = {Tokiwa, Tetsuya and Mori, Yoshinori and Suzuki, Hiroyuki},
 journal = {The Journal of earth and planetary sciences, Nagoya University},
 month = {},
 note = {This study is focused on radiolarian fossils newly found from the Ryujin Formation of the Shimanto Belt, southeast Japan. The Ryujin Formation is an accretionary complex, which is divided into three tectonostratigraphic units; structurally from lower to upper; the Disrupted sandstone and shale (Rl) Unit, the Greenstone-shale (Rm) Unit and the Tuff-shale (Ru) Unit. Due to scarce findings of radiolarian fossils, there had been very little age data from this formation. The present study based on radiolarian defined the detailed age of each unit of the Ryujin Formation as follows; 1) the Rl Unit is the late Campanian, 2) the Rm Unit is roughly correlated with the middle Santonian to earliest Maastrichtian, 3) the Ru Unit is confirmed as late Campanian in age by several newly discovered radiolarian fossils regarded as the Amphipyndax tylotus interval zone. Results of the present study have confirmed that the Rm unit, widely distributing in the Kawabe area, is characterized not by imbricated thrust structure but by the prevalence of folded structure., 国立情報学研究所で電子化したコンテンツを使用している。},
 pages = {11--23},
 title = {Cretaceous radiolarian fossils from the Ryujin Formation of the Shimanto Belt in the Kawabe area, Wakayama Prefecture, southwest Japan},
 volume = {52},
 year = {2005}
}