N. Thibault, A. Perdiou; Reply to the discussion on ‘Orbital calibration of the late Campanian carbon isotope event in the North Sea’, Journal of the Geological Society, London, 173, 504–517. Journal of the Geological Society doi: https://doi.org/10.1144/jgs2018-001
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Smith & Bailey (2017a) have criticized the methods applied for time series analysis in our study of a late Campanian chalk core in the North Sea (Perdiou et al. 2016). These critics rely essentially on two points: (1) the resolution spacing that can be applied to our gamma-ray data; (2) the use of the autoregressive order 1 (‘AR1’) noise model, which allows calculation of significance thresholds.