Episodic gullying and paleomonsoon cycles on the Chinese Loess Plateau

Buried gullies exposed in road excavations along the margin of a loess tableland on the Loess Plateau of central China lie within a thick loess-paleosol succession that spans ≥780,000 years. Constraining ages for gully cutting and filling are provided by dates of loess and soil units cut by and capping the paleogullies. An episode of gully cutting begins at the onset of an interglaciation and ceases as the gullies begin to fill with colluvium and airborne dust during the transition to full-glacial conditions. The episodic cutting and filling of gullies implies a basic astronomical (orbital) control of gully evolution involving cyclic changes in dominant summer and winter monsoon climates, surface hydrology, and vegetation cover.

Colluvium · Geomorphology · Glacial period · Loess · Loess plateau · Paleosol · Physical geography · Plateau (mathematics) · Vegetation (pathology) · Geology · Geology and Paleoclimatology Research · Landslides and related hazards · Pleistocene-Era Hominins and Archaeology · Soil Science

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