Epigenetically oxidized sandstone bodies are widespread in the study area and at the front of the oxidation zone the reduction barrier exists.
区内普遍发育次生氧化砂体，其前缘存在还原障。
Epigenetically oxidized sandstone bodies are widespread in the study area and at the front of the oxidation zone the reduction barrier exists.
区内普遍发育次生氧化砂体，其前缘存在还原障。
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