Structural Geology of the Relationship Between two Geologic Terrains

两个地质地形之间关系的构造地质学

• 批准号: 01540631
• 负责人: IWAMATSU Akira
• 金额: $ 1.09万
• 依托单位: Kagoshima 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-01540631/
• 关键词: Tectonic line; Shimanto belt; Kyushu mountains; Nobeoka Tectonic Line; 構造地質学; 構造帯; 地形解析; リモ-トセンシング; 国土数値情報; 画像処理

It has been considered that a tectonic line or a large fault is situated between the two geologic terrains. "Nobeoka Tectonic Line" is also regarded as such a fault dividing the Shimanto belt into to parts in Kyushu, Japan. Northern part is the Cretaceous Morotsuka belt and southern is the Paleogene Mikado and Hyuga belts."Nobeoka Tectonic Line" is believed that it passes through Mikado area. So we carried out the detail geologic survey. We find some outcrops of the very boundary between the Morotsuka and the Mikado groups. But no shear structure, i. e. fault gouge or fault breccia is observed. Moreover these two groups have concordant structures and affected the same folding. The same lithology such as chart-laminite is also found in the both groups. Therefore "Nobeoka Tectonic Line" does not exist in this area.

人们一直认为，在这两个地质地形之间有一条构造线或一条大断层。“野冈构造线”也被认为是将日本九州岛东带分成两部分的断层。北部为白垩系摩洛冢带，南部为古近系Mikado和Hyuga带。“野冈构造线”被认为是经过美卡多地区的。因此，我们进行了详细的地质调查。我们在Morotsuka组和Mikado组之间的边界上发现了一些露头。但未见断层泥、断层角砾岩等剪切构造。而且这两类分子结构一致，影响相同的折叠。在这两个组中也发现了相同的岩性，如海图片理岩。因此，该地区不存在“野冈构造线”。

项目成果

岩松 暉・他: "九州四万十帯における“延岡構造線"について" 地質学雑誌.

Akira Iwamatsu 等：“关于九州四万十带的‘延冈构造线’”地质杂志。

田中 健一・他: "九州四万十帯,神門地域における“延岡構造線"周辺の地質構造" 日本地質学会第98年学術大会講演要旨集. (1991)

田中健一等：《九州四万十带锦门地区延冈构造线周边地质构造》日本地质学会第98届学术会议摘要（1991）。

IWAMAMATSU, Akira & YOKOTA, Shuichiro: "So-called "Nobeoka Tectonic Line" in Kyushu Shimanto belt." Jour. Geol. Soc. Japan.

岩间松晃

岩松 暉・横田 修一郎: "九州四万十帯における“延岡構造線"について" 地質学雑誌.

Akira Iwamatsu 和 Shuichiro Yokota：“关于九州四万十带的‘延冈构造线’”地质杂志。

岩松暉,横田修一郎: "宮崎県東臼杵群南郷村における大薮構造線" 地質学雑誌.

Akira Iwamatsu、Shuichiro Yokota：“宫崎县东臼杵郡南乡村的 Oyabusu 构造线”地质杂志。