Long-period astronomical forcing of climatic and biological evolution during the late Paleozoic icehouse-to-greenhouse transition

Geochemical Constraints and Astronomical Forcing on Organic Matter Accumulation of Marine–Continental Transitional Shale Deposits in the Qinshui Basin during the Carboniferous–Permian Transition

“…Changes in the orbital geometry of the Earth can result in cyclical changes in insolation, affecting paleoclimatic fluctuations and atmospheric circulation. These changes further regulate chemical weathering intensity, sediment transport and depositional processes, and atmospheric circulation patterns, thus contributing to changes in surface water temperature, ocean circulation, glacier ablation, precipitation, and relative sea level. ,, All of these geological factors control sedimentation processes, resulting in cyclic changes in lithological, geophysical, and geochemical parameters. , The TY–SX successions were deposited during LPIA, coinciding with the presence of a permanent polar ice sheet on the Earth (Figure a). The high-amplitude sea-level changes observed during the early Permian icehouse were attributed to cyclic variations owing to glaciation .…”

“…24,49,83 All of these geological factors control sedimentation processes, resulting in cyclic changes in lithological, geophysical, and geochemical parameters. 4,36 The TY−SX successions were deposited during LPIA, coinciding with the presence of a permanent polar ice sheet on the Earth (Figure 1a). The highamplitude sea-level changes observed during the early Permian icehouse were attributed to cyclic variations owing to glaciation.…”

“…During this C–P transition, a momentous shift from an icehouse to a greenhouse climate occurred . The supercontinent Pangaea boasted complex vegetation ecosystems, which are instrumental in enhancing carbon sequestration (i.e., coal formation). , Moreover, explosive volcanic activities and frequent wildfires contributed to global warming and changes in ocean circulation systems. − These driving factors directly or indirectly played an important role in the carbon cycle, profoundly affecting the burial of organic matter (OM).…”