@article{oai:soar-ir.repo.nii.ac.jp:00012020, author = {丹羽, 耕輔 and 大塚, 勉}, issue = {2}, journal = {信州大学理学部紀要}, month = {Mar}, note = {The accretionary complex of the Chichibu Terrane in the western Lake Hamana area is divided into three tectonic units (Units A, B and C) on the basis of lithology and structure. Among them, the Units A and B are melanges comprising chert, basalt and limestone blocks and mudstone matrices. The Unit C is an accumulation of large-scale rock slabs of limestone and basalt. The Units A and C are characterized by horizontal accumulation structure of the slabs and well-developed cleavage. Although the Unit B steeply inclines in usual, rocks of the unit show less deformation than other units. Late Middle and late Middle to early Late Jurassic radiolarians are obtained from chert and siliceous mudstone respectively in the Unit A. Chert of the Unit B yields Early Permian and Middle Triassic radiolarians. Middle to late Middle Jurassic radiolarians are found in mudstone and other pelitic rocks of the Unit B. The fossile evidences suggest that the Unit A is correlative with the Togano Unit of the Southern Chichibu Terrane in radiolarian age., Article, 信州大学理学部紀要 36(2): 77-93(2002)}, pages = {77--93}, title = {浜名湖西方地域の秩父帯付加コンプレックスから産出した後期古生代および中生代放散虫化石}, volume = {36}, year = {2002} }