On the Distribution of Natural Gas in the Southern Kanto Gas-producing Region

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  • Kawai Kozo
    Department of Mining, Faculty of Engineering, University of Tokyo

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Other Title
  • 南関東ガス田地帶における天然ガスの分布について

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The Southern Kanto dissolved-in-water type gas-producing region, which covers Chiba prefecture, and a part of Tokyo, Kanagawa, Ibaragi and Saitama prefectures, is one of the largest gas-producing regions in Japan. Stratigraphically most of the gas-producing horizons in the region are restricted to the Kazusa group (All of the formations between the Kurotaki unconformity and the top of the Kasamori formation are called the Kazusa group en bloc.). It is considered that at least most of the natural gas in the Kazusa group is indigenous to the group. Roughly speaking, natural gas potentiality is highest in the southern part of the Kujukuri district, and lowest in the western half of the area of distribution of the Kazusa group.

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