Neogene fluvial sediments in the northern Jinshaan Gorge, China: Implications for early development of the Yellow River since 8 Ma and its response to rapid subsidence of the Weihe-Shanxi Graben

Origin of the Neogene fluvial sediments in the Jinshaan Gorge is a significant issue concerned with development of the Yellow River. Field investigation shows that the bedrock topography underneath the Neogene fluvial sediments is an up to 8–10 km-wide valley (The Tanghsien-phase valley). The Tanghsien-phase bedrock valley is made up of two flat terrace surfaces. Altitude evidence shows the Neogene fluvial sediments almost continuously...