Reconstruction of Inorganic Paleoenvironment From 20 Thousand Years Down to Recent Around Lake Nojiri, Nagano Prefecture

长野县野尻湖周边2万年前至今无机古环境的重建

• 批准号: 02302028
• 负责人: NOMURA Satoshi
• 金额: $ 3.78万
• 依托单位: Gunma University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02302028/
• 关键词: Uppermost Pleistocene; The coldest climate; Paleoenvironment; Eolian and hydrogenous beds; Nojiri-ko Excavation; Paleomagnetism of Upper Pleistocene; 地形からみた地殻変動; 第四紀古環境; 第四紀古気候; 野尻湖周辺地質; 第四紀末地磁気

(1) Several key beds of the uppermost Pliocene to Recent formations around Lake Nojiri were identified in both eolian and hydrogenous beds.(2) Hills and lowland around Lake Nojiri show periodic arrangement. Along the boundary between hills and lowlands, there are three main faults, named Furumi, Arasehara and Rokugatu Faults respectively.(3) Disturbances of uppermost Pleistocene beds were formed by the deposition of primary and secondary sedimentary materials.(4) There is no reverse magnetized horizon from 20 thousand years down to Recent. But we can find the horizon in the beds of about 50 thousand years ago.(5) The coldest climate is estimated within the uppermost part of the Upper Nojiri-ko Member III by pollen analysis.

(1)在野尻湖周围确定了上新世至新近地层的几个关键层，包括风成层和含水层。(2)野尻湖周围丘陵和低地呈周期性排列。沿着丘陵和低地的边界，有三条主要断层，分别被称为古海断层、荒原断层和罗库加图断层。(3)上部更新世地层的扰动是由原生和次生沉积物质沉积形成的。(4) 2万年到近代没有逆磁化层。但是我们可以在大约5万年前的地层中找到地平线。(5)花粉分析表明，上野尻阁三段最冷。

项目成果

赤羽 貞幸,近藤 洋一: "野尻湖周辺の最終氷期の堆積物" 月刊地球. 14. 7-15 (1992)

Sadayuki Akabane、Yoichi Kondo：“野尻湖周围最后的冰河时代沉积物”月刊地球。 14. 7-15 (1992)

Kumai, Hisao: "Changes of the surface level of Lake Nojiri." Gekkan Chikyu. 14. 15-21 (1992)

Kumai, Hisao：“野尻湖水面水位的变化。”

野村 哲,会田 信行: "野尻湖周辺地域、上部更新統の古地磁気" 月刊地球. 14. 43-49 (1992)

Tetsu Nomura、Nobuyuki Aida：“野尻湖周围更新世的古地磁学”月刊地球。 14. 43-49 (1992)

Kawabe, takayuki: "History of sedimentation based on the thickness of Nojiri-ko Formation." Gekkan Chikyu. 14. 28-36 (1992)

Kawabe takayuki：“基于野尻湖地层厚度的沉积历史。”

Nomura, Satoshi and Aida, Nobuyuki: "Paleomagnetism of Upper Pleistocene formations around Lake Nojiri." Gekkan Chikyu. 14. 43-49 (1992)

Nomura、Satoshi 和 Aida、Nobuyuki：“野尻湖周围上更新世地层的古地磁作用”。