Nannofossil abundance of Hole 57-440
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Relative abundance: D = dominant, A = abundant, C = common, F = few, R = rare, T = trace, P = present (numerical values are abundance in percent)
相对丰度(Relative abundance)的标识定义如下:D对应优势(dominant),A对应丰盛(abundant),C对应常见(common),F对应少量(few),R对应稀有(rare),T对应痕量(trace),P对应存在(present);数值形式的标注代表以百分比计的丰度值。



