The initial-mobility period of diwa activity saw the formation of the Jiaolai basin and the deposition of the carbonaceous source rock in the first member of the Lower Cretaceous Laiyang Group.
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释义
在地洼活动初期,形成胶莱盆地并沉积下白垩统莱阳群一段含碳岩系矿源层;
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