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。
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.
该三角洲沉积的特征是入海河流流速低而流量大，泥沙含量高而粒级细小，在三角洲前缘伴生有生物礁(滩)。
It has evolved late-rally, showing reef flat, core and front from north to south.
由北向南展示出礁坪相到礁核相再到礁前斜坡相的侧向演变。
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