The latter consisting of dark gray clastic limestone, chert beds, siliceous mudstone and massive reef and usually with graded bedding.

  • 石灰岩建造常为黑色、灰黑色碎屑石灰岩、燧石层、粉砂质泥板岩和礁灰岩组成,常夹递变层理。

  • 互联网摘选 2025-01-20 11:53:23

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