Fig. 2
From: Orbital eccentricity and internal feedbacks drove the Triassic megamonsoon variability
Cyclostratigraphic analysis at Yaoye-1 (150–405 m). (a) Stratigraphic column of the Yaoye-1 core illustrating the lithological variations and 16 m filtered cycles (passbands: 0.0625 ± 0.03 cycles m−1). The U–Pb age of 241.36 ± 0.12 Ma is reported by Cui, et al.43. (b) Magnetic susceptibility (MS) series after removing a 40 m ‘loess’ trend showing 16 m filtered cycles (passbands: 0.0625 ± 0.03 cycles m−1). (c) Wavelet power spectral analysis of the MS series. (d) COCO and eCOCO sedimentation rate map with null hypothesis (H0) of the MS series at Yaoye-1. (e) 405 kyr tuned MS series showing 405 kyr filtered cycles (passbands: 0.00247 ± 0.0005 cycles kyr−1). (f) Wavelet power spectral analysis of the tuned MS series. Note that both the 405 and 20 kyr cyclical signals exceed the 5% false discovery rate (FDR) confidence level (CL) (5% FDR CL = 99.99804% Chi-squared CL; Supplementary Fig. S3).
