... Lower Carboniferous Series 下石炭统 Lower Cretaceous Series 下白垩统 Lower Cretaceous 早白垩世 ...
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查干凹陷位于银根盆地东部，勘探主要目的层为下白垩统。
Chagan depression is in the east of Yin 'gen basin, and lower cretaceous is major exploration stratum.
建议在梨树镇坳陷下白垩统找气，在平阳镇坳陷老第三系找油。
The prospecting for gas in Lishuzhen depression and oil in Pingyangzhen depression is suggested.
甘肃永靖盐锅峡下白垩统河口群盐锅峡组发现大量恐龙足迹化石。
There are a lot of dinosaur footprints in the Early Cretaceous from Yanguoxia, Yongjing County, Gansu Province.
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