Genesis of Loess Particles on the Chinese Loess Plateau

The sources of the sediments in distinct areas Chinese Loess Plateau (CLP) are still disputed, starting with particle formation original desert areas, as well neighboring river systems. loess particles southern CLP was investigated using Scanning Electron Microscopy (SEM) and combined material modal composite analysis. Here, we determined mineralogy Duanjiapo (DJP) section on southernmost last glacial-interglacial samples central north CLP. results reveal that plot along N-S transect, which is very likely result differential weathering. SEM observations internal textures soil aggregates from DJP suggest precipitation mediated dissolution led to fine fraction (5–10 μm). most observed for hornblende particles. further evolution these smaller followed a decrease (2.6–0 Ma) grain size up section. Our record changes trend concentrations suggests an imbalance budget influx via sub-aerosol wind transport versus mineral dissolution, provides robust evidence sediment provenance deserts west Understanding source critical trace Asian monsoon evolution. coeval change trends summer winter monsoon, this contemporaneous may not support recently proposed Pacific Walker Circulation mechanism interpretation monsoon. This article protected by copyright. All rights reserved.