@article{oai:nagoya.repo.nii.ac.jp:00001416, author = {OHBA, Hotaka and ADACHI, Mamoru}, journal = {The Journal of earth and planetary sciences, Nagoya University}, month = {Dec}, note = {Omura Island is underlain mainly by pebbly shale, chert, siliceous shale and sandstone, and subordinately by pillow basalt, dolerite, bedded limestone and conglomerate. Middle-Upper Permian radiolarians such as Follicucullus scholasticus were first discovered from siliceous shale and bedded chert in the western part of Omura Island, and Middle-Upper Jurassic radiolarians of the Tricolocapsa plicarum, Tricolocapsa conexa and Stylocapsa (?) spiralis Zones were discovered from siliceous shale blocks and mudstone in the eastern part of Omura Island. Limestone blocks associated with basalt yield Middle Permian fusulinids of Neoschwagerina simplex and Minojapanella elongata. The sedimentary complex on Ogura Island consists of sandstone, siliceous shale and chert ; chert and siliceous shale yield Triassic and Jurassic radiolarians, respectively. Triassic radiolarians include Triassocampe coronata and Pseudostylosphaera japonica, and Jurassic ones include Tricolocapsa (?) sp. aff. T.(?) fusiformis and Tricolocapsa plicarum. On the basis of geological and radiolarian studies, the sedimentary complex of Omura Island is divided into two units : Jurassic pebbly shale unit that includes a number of blocks and slabs of pillow basalt, Permian limestone and chert, and Jurassic sandstone-rich unit that includes chert, pebbly shale, siliceous shale, alternation of sandstone and shale, and conglomerate. Ogura Island is underlain by a Jurassic sedimentary complex similar to the sandstone-rich unit on Omura Island., 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 = {55--81}, title = {Permian, Triassic and Jurassic radiolarians from Omura and Ogura Islands in the eastern part of the Shima Peninsula, Southwest Japan}, volume = {42}, year = {1995} }