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日本中新世火山岩油气储集层主要分布于日本海东侧,大致呈北北东向展布,因为这里的玄武岩、安山岩、流纹岩略显蚀变而呈绿色,故在日本又称“绿色凝灰
Japan Miocene volcanic hydrocarbon reservoirs are mainly distributed on the east side of the Japan Sea and are generally distributed in the north-north east direction. Because the basalt, andesite and rhyolite here are slightly altered and green, they are also called " Green tuft