活断層研究
Online ISSN : 2186-5337
Print ISSN : 0918-1024
立川断層の最新活動について
東郷 正美佐藤 比呂志池田 安隆松多 信尚増淵 和夫高野 繁昭
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キーワード: 立川断層, 露頭, 最新活動, 東京
ジャーナル フリー

1996 年 1996 巻 15 号 p. 1-8

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By excavation of the Ochikawa-Ichinomiya remain located on the flood plain along Tama River near the boundary between Tama City and Hino City, Tokyo metropolitan area, a fault was found in young alluvium. This fault is regarded as the continuation of Tachikawa fault, a major active fault existing in the left bank area of Tama River, because it is located on the southeastern extension of Tachikawa fault line, and its strike is almost parallel to the Tachikawa fault.
Detailed investigation of the fault outcrop made it clear that the last faulting event on the Tachikawa fault had occurred after A. D.1020-1158, the mid-Heian period. At this place, the last faulting event was dominantly strike slip with horizontal shortening of about 0.6 m.

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