The lithologies are dominated by alternating sandstones, shales and limestone, and the sedimentary environment based on shoreland tidal flat with swamp developed in the lower.
为砂、页-灰互层，沉积环境以滨岸潮坪为主，下部沼泽发育。
The lithologies are dominated by alternating sandstones, shales and limestone, and the sedimentary environment based on shoreland tidal flat with swamp developed in the lower.
为砂、页-灰互层，沉积环境以滨岸潮坪为主，下部沼泽发育。
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