Differentiating detrital and pedogenic contributions to the magnetic properties of aeolian deposits in the southern Tibetan Plateau: Implications for paleoclimatic reconstruction

•Spatial differences in the origin of sedimentary magnetic properties.•Detrital inputs and pedogenesis control the magnetic properties in the middle reach.•In the middle reach secondary magnetic minerals reflect moisture and/or temperature.•Magnetic properties in the upper reach are dominated by detrital inputs.•In the upper reach magnetic parameters are proxies of wind intensity.