Tephrochronological study for Archaeological Ruins and Remains in the Izu Islands.

伊豆群岛考古遗址和遗迹的年代学研究。

• 批准号: 60580204
• 负责人: SUGIHARA Shigeo
• 金额: $ 1.02万
• 依托单位: Meiji 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: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-60580204/
• 关键词: Izu Islands; Volcanic activity; Ruins and Remains; 遺跡・遺物; 火山灰編年学

In Izu islands, prehistoric ruins and remains are sandwitched in volcanic deposits. Stratigraphy of this volcanic deposits clarifyed, thus prosperity and decay and age of the volcanic activities were examined. And obtained following results.1. Both widespread tephras, Aira-Tn ash and K-Ah ash were discovered in the volcanic deposits of Izu islands and the widespread tephras are defined.2. In Hachijo islnd, Aira-Tn ash discovered at the top of pumice flow deposits of Higashi-yama caldera. C-14 age of the pumice flow was measured.3. K-Ah ash were discovered in Takinokuchi ruins in Oshima island and Yuhama ruins in Hachijo island. Both relate with remains belongs to the latest Jomon Period.4. Some vitric ash discovered in volcanic deposits in the Izu islands and traced. These tephras could be treated as important marker-tephras in the near future.

在伊豆群岛，史前遗址和遗迹被夹在火山沉积物中。该火山沉积物的地层学变得清晰，从而可以检查火山活动的兴衰和年龄。并得到以下结果： 1．伊豆群岛火山沉积物中发现了广泛分布的火山灰Aira-Tn灰和K-Ah灰，并对广泛分布的火山灰进行了界定。 2．在八丈岛东山破火山口的浮石流沉积物顶部发现了姫良郓灰。测定了浮石流的C-14年龄。 3．在大岛的泷之口遗址和八丈岛的汤滨遗址中发现了K-Ah灰。两者都与属于最新绳文时代的遗骸有关。4．在伊豆群岛的火山沉积物中发现并追踪到了一些玻璃灰。在不久的将来，这些碎屑可能会被视为重要的标记碎屑。

项目成果

杉原重夫: 駿台史学. 64. (1987)

杉原茂雄：Sundai 历史 64。（1987）

杉原重夫: 第四紀研究. 26. (1987)

杉原茂夫：第四纪研究26。（1987）

Sugihara, Shigeo: Sundai Shigaku (Sundai Historical Review). 70. (1987)

杉原茂雄：Sundai Shigaku（Sundai 历史评论）。