The arid interior of Asia is the largest source of dust deposited in the North Pacific Ocean, and some dust is even transported to Greenland. Investigating the provenance history of Asian dust can provide strong constraints on the evolution of topography and climate in the Asian interior. Eolian dust Nd isotopic records preserved in North Pacific Ocean sediments since ∼40 Ma provide a spatially integrated first-order constraint on the provenance changes of Asian dust. However, a lack of similarly long dust Nd isotopic records from Asian dust source areas, namely, the northern Tibetan Plateau and the Central Asian Orogenic Belt, has hindered a full understanding of Asian dust provenance changes linked to the Cenozoic evolution of tectonics, climate and topography in inland Asia. Here, we have constructed the first fine-grained and whole-rock Nd isotopic records from sediments deposited on the northern Tibetan Plateau since ∼52 Ma. The results indicate two major changes, a gradual increase in ε_Nd(0) values between ∼42 Ma and ∼25 Ma and a general decrease since ∼25 Ma, which were probably caused by the incremental northward growth of the Tibetan Plateau. Further mass balance estimates based on comparisons between the Nd isotopic characteristics of dust from the northern Tibetan Plateau and the North Pacific Ocean indicate that a rapid increase in the contribution of the Central Asian Orogenic Belt to Asian dust at ∼25 Ma can be closely linked to rapid exhumation caused by tectonic uplift and aridification in inland Asia. Our provenance analyses, together with the onset of eolian sediment in central and eastern Asia, suggest that a modern-like regime promoting Asian dust emissions and transport might have been in place since the late Oligocene.

亚洲干旱的内部是沉积在北太平洋的最大灰尘来源，有些灰尘甚至被运送到格陵兰岛。研究亚洲尘埃的起源历史可以对亚洲内部地形和气候的演变提供强大的限制。自40Ma以来保存在北太平洋沉积物中的风尘Nd同位素记录对亚洲尘源的变化提供了空间综合的一阶约束。然而，由于缺乏来自亚洲尘埃源地区（即青藏高原北部和中亚造山带）的相似的长尘埃Nd同位素记录，阻碍了人们对与构造，气候和气候的新生代演化有关的亚洲尘埃起源变化的全面了解。亚洲内陆的地形。这里，我们从〜52 Ma以来，利用沉积在青藏高原北部的沉积物构造了第一批细粒和全岩Nd同位素记录。结果表明存在两个主要变化，ε逐渐增加_Nd（0）值在〜42 Ma和〜25 Ma之间，并且自〜25 Ma以来普遍下降，这可能是由于青藏高原向北生长的增加所致。根据对青藏高原北部和北太平洋尘埃Nd同位素特征比较的进一步质量平衡估计，表明中亚造山带对〜25 Ma的亚洲尘埃贡献的快速增加可能与亚洲内陆构造隆起和干旱化引起的快速发掘。我们的物产分析以及中亚和东亚风积物的出现表明，自渐新世晚期以来，可能已经建立了类似现代的制度来促进亚洲粉尘的排放和运输。