reef-front terrace 礁前阶地
Reef flat, reef crest and reef front margin can be recognized in the reef core facies.
礁核相包括礁坪带、礁冠带和礁前缘带。
There occur larger-scale coral reefs that may be subdivided into reef base, reef frame, reef-front collapse breccias and inter-reef deposits.
在拉竹龙组中发现规模较大的珊瑚礁体，可细分出礁基、礁格架、礁前塌积角砾及礁间相沉积；
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