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タイトル: 奥丹後半島の地形発達史
その他のタイトル: Physiographic History of the Oku-Tango Peninsula
著者: Tada, Fumio
著者(別言語): 多田, 文男
発行日: 1928年8月24日
出版者: 東京帝国大学地震研究所
掲載誌情報: 東京帝国大学地震研究所彙報. 第5冊, 1928.8.24, pp.111-121
抄録: The Oku-Tango Peninsula makes a two-cycled mountainland from the standpoint of its physiographic history. Low relief of its central plateau represents the cycle of erosion of the former age and maturely dissected hills along its margin show that of the present time. The characteristic of the present cycle is the occurrence of blocking movements, by which the surface of the former cycle has been uplifted to the present altitude and has formed the major tectonic feature of the peninsula. There are two types of fault in this region: one running from northwest to southeast, the other from northeast to southwest. Blocking movements in the present cycle have taken place neither continuously nor simultaneously, but have made a series of intermittent occurrences. Among them, latest three minor ones are distinctly observable in the topography of the peninsula. The first is a differential upheaval which is well explained by coastal terraces, the second, a slight submergence known from the shoreline of rias type, and the third, a tilting of land blocks represented by the recent Oku-Tango earthquake on March 7, 1927. In these minor episodes, we have found that the movements have been carried on always in the same sense, namely, blocks of land have been tilted up in their southeastern or northeastern side.
URI: http://hdl.handle.net/2261/9901
ISSN: 00408972
出現カテゴリ:東京大学地震研究所彙報
東京大学地震研究所彙報

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