Reef flat, reef crest and reeffront 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。
2
Then we go to a small island with a coral reef 'in front of it. The friends of snorkeling will have again a great joy.
然后我们前往一小岛，在岛的前面有一珊瑚礁，喜欢潜水的朋友呢，会再次感到开心高兴。
3
The river for building the delta was characterised by low velocity, high discharge, high concentration of fine clay and sand, and associated with reef (shoal) in delta front.