@article{oai:niigata-u.repo.nii.ac.jp:00003207,
 author = {栗原, 敏之},
 issue = {10},
 journal = {地質学雑誌, 地質学雑誌},
 month = {Oct},
 note = {Silurian and Devonian radiolarian biostratigraphy was studied for tuffaceous clastic rocks developed in the Fukuji - Hitoegane and Kuzuryu Lake - Upper Ise River areas of the Hida Gaien belt, central Japan. The objective of the study was to improve chronostratigraphic calibration of these intervals and to discuss local correlation among the Middle Paleozoic strata in Japan. Radiolarian zones characterized by eight distinctive assemblages have been ・defined in the seven measured sections, as follows: Haplotaeniatum tegimentum - Syntagen-tactinia excelsa (middle to upper Llandovery), Fusalfanus osobudaniensis - Secuicollacta itoigawai (lower Ludlow). Zadrappolus spinosus - Praespongocoelia parva (lower or middle Ludlow), Stylosphaera (?) magnaspina (upper Ludlow), Pseudospongoprunum (?) tauversi (lower to middle Pridoli), Futobari solidus - Zadrappolus tenuis (lower or middle Pridoli to Lower Devonian), Palaeoscenidium ishigai - Deflantrica furutanii (Lochkovian or Pragian to lower Emsian), and Pactarentinia intermedia - Pactarentinia igoi (lower Emsian) Assemblage Zones. Age control is based on the stratigraphic relationship between the zones, other fossils, and correlation with other radiolarian zones established in the southern Urals, west Texas, and the Kurosegawa belt, Southwest Japan. Biostratigraphic correlations clearly show that Ludlow to Emsian tuffaceous clastic rocks of deep-water origin in the Hida Gaien belt are exceedingly similar to those in the Kurosegawa and South Kitakami belts in depositional age. It provides a constraining link between these terranes during the early evolutionary stage of their geologic history., 飛騨外縁帯の福地-一重ヶ根地域と九頭竜湖-伊勢川上流地域に露出する凝灰質砕屑岩相のシルル系・デボン系において放散虫生層序の検討を行った.7つの主要なセクションで認められた放散虫化石群集に基づき,下部シルル系ランドベリー統から下部デボン系エムス階に対比される計8つの群集帯を設定し,飛騨外縁帯のシルル系・デボン系凝灰質砕屑岩層の時代を詳細に議論した.従来,飛騨外縁帯と黒瀬川帯・南部北上帯のシルル系・デボン系は,凝灰質砕屑岩層の堆積年代やシルル系石灰岩層の有無等,相違点が強調されてきた.しかし,放散虫化石帯に基づく対比から,後期シルル紀ラドロウ世から前期デボン紀エムス期の凝灰質砕屑岩層は,その発達状況において高い類似性があることが明らかになった.この類似性は,3地帯のシルル系・デボン系が形成時において深く関連していたことを示す.},
 pages = {620--639},
 title = {飛騨外縁帯のシルル系・デボン系放散虫生層序(<特集>飛騨外縁帯研究の進展と展望)},
 volume = {110},
 year = {2004}
}