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    Nannofossils Essential ICN Rules to Know Preparation Techniques for Calcareous Nannofossils
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Biostratigraphy

Discoaster surculus 1 1466 28

Biostratigraphy is the separation and differentiation of rock units based on the description and study of the fossils they contain

Discoaster surculus

Advantages of Using Calcareous Nannofossils in Biostratigraphy

  • Quick and Simple Sample Preparation
    Preparation of samples for calcareous nannofossil analysis typically involves minimal processing, often just the creation of smear slides without the use of chemicals.

  • Rapid Species Identification
    Thanks to their well-documented taxonomy and distinct morphological and optical features, calcareous nannofossil species can be identified with confidence and speed using a petrographic microscope.

  • Extremely Small Size
    Their minute size (typically less than 20µm) allows them to be recovered even from small samples. It ensures they are well-represented in sediments.

  • Accurate Age Determination
    Calcareous nannofossils, with their rapid evolutionary rates and widespread geographic distribution, enable the precise age dating and stratigraphic correlations on both local and global scales.

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