Journal of the Japanese Association for Petroleum Technology
Online ISSN : 1881-4131
Print ISSN : 0370-9868
ISSN-L : 0370-9868
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Volume 35, Issue 5
Displaying 1-7 of 7 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1970 Volume 35 Issue 5 Pages 240-241
    Published: September 30, 1970
    Released on J-STAGE: March 27, 2008
    DOIhttps://doi.org/10.3720/japt.35.240
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1970 Volume 35 Issue 5 Pages 242-246
    Published: September 30, 1970
    Released on J-STAGE: March 27, 2008
    DOIhttps://doi.org/10.3720/japt.35.242
    JOURNAL FREE ACCESS
    Download PDF (642K)
  • [title in Japanese]
    [in Japanese]
    1970 Volume 35 Issue 5 Pages 247-257
    Published: September 30, 1970
    Released on J-STAGE: March 27, 2008
    DOIhttps://doi.org/10.3720/japt.35.247
    JOURNAL FREE ACCESS
    Download PDF (1578K)
  • Studies on the Oil Geology of the Ishikari Coal-Fields, Hokkaido, Japan (1)
    H. IWAMOTO, Y. YOSHIDA, S. KOMURA, T. SAKAMOTO
    1970 Volume 35 Issue 5 Pages 258-266
    Published: September 30, 1970
    Released on J-STAGE: March 27, 2008
    DOIhttps://doi.org/10.3720/japt.35.258
    JOURNAL FREE ACCESS
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    In the present paper the writers discuss the stratigraphy, tectonics, geophysics, and geochemistry of the Cretaceous of the Ishikari coal fields.
    The area discussed here in is situated in the central part of Hokkaido. The Cretaceous consists of the Sorachi, Lower Ezo, Middle Ezo, Upper Ezo, and Hakobuchi groups in descending order, ranging Neocomian to Maestrichtian. They are overlain unconformably by the older Paleogene Ishikari group including coal measures and younger Paleogene marine Poronai group.
    In the northern area predominate pararell folds, of which the Sorachi anticline is the largest, with a general trend of N-S direction. In the southern area, on the contrary, a number of isoclinal or overturned foldings with the same general trend are developed by the more intense tectonic disturbance. Most of these folded structures, are well coinsident to high gravity anomalies.
    The Cretaceous may be promising for future oil production because of its occupying wide areal distribution and large amount of sediments accompanied with many oil seepages, although the sediments contain smaller content of residual hydrocarbons compared with those of the oil producing areas of Niigata prefecture.
    The MITT Sorachi, the first test boring well exploring the whole sequences of the Cretaceous and starting in June, 1970, will reveal the more detailed oil-geologic features of the area.
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  • [title in Japanese]
    [in Japanese]
    1970 Volume 35 Issue 5 Pages 280-281
    Published: September 30, 1970
    Released on J-STAGE: March 27, 2008
    DOIhttps://doi.org/10.3720/japt.35.280
    JOURNAL FREE ACCESS
    Download PDF (164K)
  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese]
    1970 Volume 35 Issue 5 Pages 282-286
    Published: September 30, 1970
    Released on J-STAGE: March 27, 2008
    DOIhttps://doi.org/10.3720/japt.35.282
    JOURNAL FREE ACCESS
    Download PDF (1322K)
  • [title in Japanese]
    [in Japanese]
    1970 Volume 35 Issue 5 Pages 287-290
    Published: September 30, 1970
    Released on J-STAGE: March 27, 2008
    DOIhttps://doi.org/10.3720/japt.35.287
    JOURNAL FREE ACCESS
    Download PDF (349K)
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