Tectonic and Climatic Impacts on Environmental Evolution in East Asia During the Palaeogene

Palaeogene environmental evolution in East Asia remains ambiguous. Here we present integrative work including magnetostratigraphy, grain-size, geochemistry, and clay mineralalogy from a 1609 m-thick fluviolacustrine sequence eastern China. The results reveal two periods of tectonic control alternating with three climatic on the sedimentary evolution. Tectonic activity study area, as revealed by particle coarsening reduced weathering, occurred during 65.6–59 Ma strengthened 55–54 response to India-Eurasia collision. Weathering gradually enhanced 59–55 Ma, probably caused global warming. Continuous warming 54–50.5 is responsible for aridification Asia. From 50.5 37.6 cooling weakened evapotranspiration increased westerlies-derived moisture. Both aspects effective moisture chemical weathering These shed light how tectonism climate change impacted Palaeogene.