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首页> 外文会议>International Conference on Geologic Problem Solving with Microfossils >CALCULATING CALCAREOUS NANNOFOSSIL ABSOLUTE ABUNDANCESAND UNCERTAINTIES FOR PALEOCEANOGRAPHIC STUDIES
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CALCULATING CALCAREOUS NANNOFOSSIL ABSOLUTE ABUNDANCESAND UNCERTAINTIES FOR PALEOCEANOGRAPHIC STUDIES

机译：计算钙质Nannofossil绝对丰富的古生美容研究的不确定性

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The random settling technique (RST) and the spiking method (SM) are two independent methods that have been combined and used by several authors to calculate absolute abundance of calcareous nannofossils. Both methods usually did not give similar results, and this leads to the question of which one gives a better estimate of nannofossil absolute abundances. In this study, the RST and SM were used to calculate the nannofossil absolute abundances of middle Eocene sediment samples from ODP Leg 171B. Our analyses show similar and reproducible results for both methods. A collector's curve was used to determine that at least six fields of view are needed to get a good representation of all the taxa present in the samples used for this study. The results of a x~2 test showed that the distribution of the nannofossils on the cover slip is uniform with random variation, and the error analyses showed that the SM has greater uncertainties than the RST because of error associated with the diameter of microbeads used for spiking.
机译：随机沉降技术（RST）和尖峰法（SM）是两种独立的方法，这些方法已被几种作者组合和使用，以计算钙质甘露松松的绝对丰富。这两种方法通常都没有给出类似的结果，这导致了一个问题，其中一个问题可以更好地估计Nannofossil绝对丰富。在该研究中，RST和SM用于计算ODP腿171B中的中胚沉积物样品的NannoFossil绝对丰度。我们的分析显示了两种方法的类似和可重复的结果。收集器的曲线用于确定至少六个视野，以获得本研究中使用的样本中存在的所有出现的良好代表。 AX〜2试验的结果表明，盖板上的NannOfossils的分布是均匀的随机变化，并且误差分析表明，由于与用于尖刺的微珠直径相关的误差，SM具有比RST更大的不确定性。

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