Polycyclic aromatic hydrocarbons (PAHs) in late Eocene to early Pleistocene mudstones of the Sylhet succession, NE Bengal Basin, Bangladesh: Implications for source and paleoclimate conditions during Himalayan uplift

► We separated PAHs into five groups indicating land environment. ► Pyrene showed negative correlations to perylene and coronene. ► Ratios of 4-ring to 5-/6-ring PAHs can be indicators for wildfire scale. ► In early stage of Himalayan uplift climate was arid and small wildfires occurred.