Geologic evidence for chaotic behavior of the planets and its constraints on the third-order eustatic sequences at the end of the Late Paleozoic Ice Age

摘要: Abstract High-resolution (948 samples) measurements of anhysteretic remanent magnetization (ARM) were performed on the ~ 200 m thick Early–Middle Permian Maokou Formation Shangsi section, South China. The ARM variations are quasi-periodic and wavelengths significant cycles collectively present a ratio 20:5:2:1 throughout formation, corresponding to long orbital eccentricity, short obliquity, precession cycles. A strong obliquity (44 33 kyr) signal suggests that waning waxing ice sheet in eastern Australia at end Late Paleozoic Ice Age (LPIA) exerted influence global climate sea level. “floating” astronomical time scale (ATS) is developed using 405 kyr eccentricity cycle as an calibration target. This results estimation Roadian Wordian stages duration 3.7 ± 0.4 myr 2.9 ± 0.4 myr, respectively. Prominent ~ 2 myr likely originated from Earth Mars secular frequencies g4–g3, ~ 1 myr s4–s3. These periodicities shorter than those observed Cenozoic Era, which may be due chaotic behavior planets, but still reflecting 2:1 resonance between Mars. Third-order eustatic sequences linked s4–s3 term, glacioeustatic controlling mechanism during this transitional stage icehouse Mesozoic greenhouse.