Nannofossil abundance of Hole 29-284A
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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)
相对丰度分级标准如下:D=优势(dominant),A=丰盛(abundant),C=常见(common),F=少量(few),R=稀有(rare),T=痕量(trace),P=存在(present);其中以数值形式表征的丰度单位为百分比。



