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Earth, Planets and Space
Fig. 4. | Earth, Planets and Space

Fig. 4.

From: Long period astronomical cycles from the Triassic to Jurassic bedded chert sequence (Inuyama, Japan); Geologic evidences for the chaotic behavior of solar planets

Fig. 4.

(a) Bandpass filtered data of ~2 Myr and ~8 Myr cycles and (b) S-transform spectrum of a 405 kyr tuned chert bed thickness time series in upper Triassic to lower Jurassic in the Inuyama area, Central Japan. (c) S-transform spectrum of eccentricity of orbital solutions of La2004 (Laskar et al., 2004) and La2010d (Laskar et al., 2011a) from 220 Ma to 185 Ma. The vertical lines in (b) and (c) correspond to period of 2 Myr, and 8 Myr, respectively.

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