The history of eolian dust deposition in northern China has been traced back to 22 million years ago (Ma) and the combination of different eolian formations provides a nearly continuous terrestrial climate record since the early Neogene. The spatial distr The history of eolian dust deposition in northern China has been traced back to 22 million years ago (Ma) and the combination of different eolian formations provide a nearly continuous terrestrial climate record since the early Neogene. The spatial distr