History of Asian eolian input to the Sea of Japan since 15 Ma: Links to Tibetan uplift or global cooling?

Late Miocene Intensified Tectonic Uplift and Climatic Aridification on the Northeastern Tibetan Plateau: Evidence From Clay Mineralogical and Geochemical Records in the Xining Basin

“…Clay mineral distributions of modern global continental soils and Chinese soils exhibit a first‐order climatic control rather than a lithology change (Chamley, ; Y. Xiong, ). Meanwhile, the obvious clay mineral differentiations in large rivers (e.g., Yellow and Yangtze rivers) follow a distinct climatic gradient regardless of regional lithology (Pang et al, ; Shen et al, ). Therefore, the clay mineral assemblages are less sensitive to provenance change than other proxies.…”

“…In addition, diagenetic clay minerals can be easily distinguished by several classical methods (Dunoyer de Segonzac, ; Hillier, ; Hong et al, ; Huyghe et al, ; Ye et al, ) and are always less important in continental drainage basins (Chamley, ; Gao, ). Overall, clay mineral assemblage is one of the most reliable proxies for reconstructing paleoenvironmental changes in stratigraphy with complex lithology and changing facies over different timescales, especially for the longer timescales in continental fluvial basins (Gylesjö & Arnold, ; Hong et al, , ; Singer, ; Song et al, ; Wang et al, , ; C. X. Zhang & Guo, ; C. X. Zhang, Xiao, et al, ) and ocean/marginal sea basins (Z. F. Liu et al, , ; Z. F. Liu, Zhao, et al, ; Shen et al, ; Singer, ; Thiry, ).…”

“…Intensified arid conditions and decreased precipitation amount in the northeastern TP and its adjacent regions was also recorded by the replacement of forest by steppe (Hui et al, ; J. Liu, Li, et al, ; Ma et al, , ), abrupt shift of geochemical proxies (Wan et al, ; Y. B. Yang et al, ), and sharp increase of illite/smectite ratio (Shen et al, ). However, the existing tectonic and climatic evidence is temporally simultaneous (~8–9 Ma) but spatially separated in different regions, and thus factors of local sedimentary environment and climatic conditions may bias those records, leading to poor constraints on the exact links between tectonic and climatic forcing mechanisms and processes.…”

“…The onset of eolian red clay (fine‐grained loess with reddish color) accumulation in the Chinese Loess Plateau (CLP; An et al, ; Ding et al, ; Qiang et al, ) and a notable increase in eolian input to the fluvial basin system on the northeastern TP (Y. B. Yang, Galy, et al, ), the sea of Japan (Shen et al, ), and the North Pacific (Rea et al, ; W. F. Zhang, Chen, et al, ) have all been interpreted as evidences of central Asian aridification; yet a new hypothesis interpreted them as a result of more dust supply caused by increased erosion in the Qilian Mountains and low‐elevation eastern Asia areas (Nie et al, ). Intensified arid conditions and decreased precipitation amount in the northeastern TP and its adjacent regions was also recorded by the replacement of forest by steppe (Hui et al, ; J. Liu, Li, et al, ; Ma et al, , ), abrupt shift of geochemical proxies (Wan et al, ; Y.…”

Dissolved Thorium Isotope Evidence for Export Productivity in the Subtropical North Pacific During the Late Quaternary

“…At the mid‐high‐latitude western North Pacific, most dust flux studies focus on longer, tectonic time scales. These regions are under directly westerly wind influence or close to the continental margin where dust flux is relatively high (Shen et al, 2017; Zhang et al, 2016). On orbital time scales, glacial dust flux was shown to be consistently higher than the interglacial periods in this region (Maher et al, 2010).…”