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Title :涸沼の地学的考察(第1報)
Title alternative :The earth-scientific observations of Lake Hinuma, Part 1.
Authors :斎藤, 登志雄
Authors alternative :SAITO, toshio
Issue Date :Feb-1959
Abstract :Topographically the environs of Lake Hinuma is terraced at three different levels. The extensive upper terrace is the depositional surface of the Kwanto volcanic ash of subaerial origin, which rests on that of the marine Lower Pleistocene Narita Group. To this category belong the Higashi-ibaraki, Kaminoai, and Kashima uplands at the north, south, and southeast respectively of the Hinuma valley. The surface of these uplands is wavy, with local depressions or elevations, presumably of inner origin. The Naka-gawa is the largest river of this district making its way between the uplands eastwards into the sea ; its present debourchure is situated at the south side of Nakaminato proper ; formerly the site shifted between the present one and Onuki some four kilometers south, according to the lateral shifting of the water course of the river on its wide flood-plain near the sea shore. The middle terrace is developed best along the Naka-gawa ; being a river terrace, it indicates a land
Type Local :紀要論文
Publisher :茨城大学文理学部
URI :http://hdl.handle.net/10109/5368
Citation :茨城大学文理学部紀要, 自然科学 no.9 p.87 -95
Appears in Collections:Bulletin of the Faculty of Arts and Sciences, Ibaraki University. Natural science

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