Description: In order to predict better what will happen to the global climate in the future it is necessary to understand how Earth’s climate has evolved in the geologic past. The palaeoclimate studies using proxy data from several types of materials are used to quantify the forces that drive changes in global geochemical and biogeochemical cycles which essentially altered the chemical evolution of the globe. In the wake of today’s fragile global environmental conditions there is urgent need to improve our understanding the mechanisms that influence geochemical data preservation in the proxies. Extreme and abrupt environmental perturbations can be reconstructed using regional palaeoclimate and palaeo-atmospheric circulation patterns and palaeoatmospheric pCO2 for intervals of Earth history. Studies involving proxy data-climate model inter-comparisons at global and regional scales are most needed which combine inorganic, biological and biogeochemical processes acting in the weathering zones. Highly synergetic archives and proxies have a vast unexploited potential for integrated palaeoclimatic reconstructions. Highly synergetic archives and proxies have a vast unexploited potential for integrated palaeoclimatic reconstructions. Major abrupt climatic perturbations during Mesozoic and Cenozoic Era can be used in improving forecasts of future climate as some features of past greenhouse worlds seem to be analogous to the climate of anthropocene. Large Igneous Provinces (LIPs) are often related to the catastrophic global climatic impact and mass extinction events and the flood basalt hosted palaeosols have great potentials in assessing the climatic impacts of the enormous magmatic activities. if appropriately interpreted may serve as valuable archives in obtaining reliable palaeoenvironmental reconstructions. This session invites contributions focusing studies on saprolite, paleosols and related archives based upon macro- and micromorphology, geochemistry, environmental magnetism, fossil assemblages, mineralogy and clay mineralogy etc. suitably indicating definite environmental conditions.