Journal of the Japan Society of Engineering Geology
Online ISSN : 1884-0973
Print ISSN : 0286-7737
ISSN-L : 0286-7737
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Volume 10, Issue 1
Displaying 1-5 of 5 articles from this issue
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  • Field Loading Tests on Strate of AKASHI Formation and KOBE Group
    K. Takahashi, K. Yoneda, I. Furujo, Y. Nagamine
    1969 Volume 10 Issue 1 Pages 1-12
    Published: March 01, 1969
    Released on J-STAGE: February 23, 2010
    DOIhttps://doi.org/10.5110/jjseg.10.1
    JOURNAL FREE ACCESS
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    AKASHI formation (Pliocene-Pleistocene) consists of gravel, sand and clay. KOBE group (Miocene) is composed of mudstone, sandstone and conglomerate.
    The field loading tests have been done 24 points at 5 locations:
    A-Gravellous layers with sand and clay
    B-Gravellous layers with sand and clay, less gravel than A
    C-Mudstone with nodule
    D-Fine grained sandstone
    E-Conglomeratic sandstone
    Loading plates are four kinds of 37.5, 75, 150 and 300 centimeter in diameter. Available maximum load on the equipment of these tests is about 2, 000 tons.
    The results of the loading tests are summarized as the following:
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  • Geological and Geomorphological studies on the Mechanism of the Occurrence of Drought Damage in Nagasaki Prefecture
    Yasushi Nishikawa
    1969 Volume 10 Issue 1 Pages 13-22
    Published: March 01, 1969
    Released on J-STAGE: February 23, 2010
    DOIhttps://doi.org/10.5110/jjseg.10.13
    JOURNAL FREE ACCESS
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    This paper deals with Nagasaki Prefecture that seem to be typical districts of drought damage in Western Japan in 1967, and is consisted of geological and geomorphological studies on the mechanism of occurrence of drought camage, and studies were made mainly by the efficient use of paddy rice data.
    In this district the mechanism of occurrence of drought damage is made clear, and it is posible to divide locally the danger degree of drought damage, and further to point out the direction of its prevention.
    In this district the drought damage is related to the tectonic geological conditions that control the state of water held by soil.
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  • Groundwater of Yoron-jima, Amami-gunto
    Hiroyasu Furukawa
    1969 Volume 10 Issue 1 Pages 23-29
    Published: March 01, 1969
    Released on J-STAGE: February 23, 2010
    DOIhttps://doi.org/10.5110/jjseg.10.23
    JOURNAL FREE ACCESS
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    Yoron-jima is situated in the southernmost part of Kagoshima Prefecture, Kyushu. Geologically, Most of this island is mainly composed of the relatively thick reef limestone or calcareous sandstone about 20-50m in thickness which is called the Ryuku Group, and its basements, the Ritcho Formation, occurs in the southern part. Around the island, there are several groups of marine terraces which indicate the existance of the former high sea level.
    Groundwaters in the island are controlled by the stratigrafic sequence and the structure of basements, and classified roughly into five types. Among the rest, the Nama Formation, which contain the groundwater of the stratum water type will be the best aquifer for developing groundwater in the near furture.
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  • [title in Japanese]
    [in Japanese]
    1969 Volume 10 Issue 1 Pages 30-31
    Published: March 01, 1969
    Released on J-STAGE: February 23, 2010
    DOIhttps://doi.org/10.5110/jjseg.10.30
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1969 Volume 10 Issue 1 Pages 31-34
    Published: March 01, 1969
    Released on J-STAGE: February 23, 2010
    DOIhttps://doi.org/10.5110/jjseg.10.31
    JOURNAL FREE ACCESS
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