Sedimentological Studies of the Tetori Group in the Upper Reaches of the Sho River, Gifu Prefecture, Central Japan

日本中部岐阜县尚川上游手取群沉积学研究

• 批准号: 01540626
• 负责人: KUMON Fujio
• 金额: $ 0.32万
• 依托单位: Shinshu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01540626/
• 关键词: Tetori Group; Shokawa Village; Plant Fossil; Orthoquartzite; Jurassic; Cretaceous; Sho River; Mitarai Formation; 御手洗層; 飛騨帯; ジュラ起後期; 白亜起前期

The late Jurassic to early Cretaceous Tetori Group in the Shokawa Village,Gifu Prefecture is divided into eight formations which have conformable relationship with each other. The sedimentary environments of the group changed from a shallow marine bay to meadering or braided river plain with some fluctuations. The modal composition of conglomerates and sandstones of the Tetori Group investigated quantitatively and systematically indicates that the source lands were composed mainly of granite and geneses, but sometime associated with Paleozoic to Mesozoic sedimentary rocks or Precambrian othoquartzites near the basin. These changes of the hinterland might be related to the tectonic movements in the Latest Jurassic to Early Cretaceous time in Japanese Islands.

岐阜州小川村晚侏罗世-早白垩世Tetori群被划分为8个相互整合关系的组。沉积环境由浅海海湾变为草甸或辫状河平原，并有一定的波动。Tetori群砾岩和砂岩的模式组成定量系统地研究表明，源地主要由花岗岩和成因组成，但也与盆地附近的古生代-中生代沉积岩或前寒武纪黑石英岩伴生。这些腹地变化可能与日本群岛晚侏罗世至早白垩世的构造运动有关。

项目成果

Kumon, F. and Kano, K.: "Tetori Group in the Shokawa district, Gifu Prefecture, Central Japan" ChiKyu Kagaku (Earth Science).

Kumon, F. 和 Kano, K.：“日本中部岐阜县庄川区的手取群”ChiKyu Kagaku（地球科学）。

公文 富士夫・加納 和巨: "庄川上流,岐阜県荘川地域の手取層群" 地球科学. (1991)

公文富士夫和嘉纳和夫：《岐阜县庄川地区庄川上游手取群》地球科学（1991）。