EGU2020-17548, updated on 10 Jan 2024
EGU General Assembly 2020
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Automatic calcareous nannofossil biostratigraphy using the latest version of SYRACO

Luc Beaufort, Yves Gally, Thibault de Garidel-Thoron, Ross Marchant, and Martin Tetard
Luc Beaufort et al.
  • CNRS, CEREGE-UMR 6635, Aix-en-Provence, France (

SYRACO (SYstème de Reconnaissance Automatique de COccolithes) is a software that pilots an automatic microscope and a digital camera in order to automatically recognize coccolith species and measure their morphological characteristic based on artificial neural networks. The first version was displayed in 1996 (Dollfus and Beaufort, 1996; 1999) and was scientifically used for the first time in 2001 (Beaufort et al., 2001). SYRACO evolved during the last 20 years in many aspects such as the architecture of the neural networks, the image scanning and pre-treatments. Twenty years ago, SYRACO was dedicated to quaternary paleoceanographic studies, because it was able to recognize morphological classes. With all the developments, it is now able to be used in biostratigraphy as it is able to determine coccolith species. The latest version of SYRACO will be described, and an example of application to a south Pacific core will be given.  


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Dollfus, D., and Beaufort, L.: Automatic pattern recognition of calcareous nannoplankton, Neural Network and their Applications : NEURAP 96, Marseille, France, 1996, 306-311, 

Dollfus, D., and Beaufort, L.: Fat neural network for recognition of position-normalised objects, Neural Networks, 12, 553-560, 1999.

How to cite: Beaufort, L., Gally, Y., de Garidel-Thoron, T., Marchant, R., and Tetard, M.: Automatic calcareous nannofossil biostratigraphy using the latest version of SYRACO, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-17548,, 2020.


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