Gravity flows were studied in the Yanchang Formation in China. The researchers looked at different types of sediment deposits and how they were formed. They found that the deposits were made up of different layers, including debris flows and mudstones. These layers were created by factors like sediment supply, terrain slope, and natural events like volcanoes and earthquakes. The sediment supply for one type of deposit likely came from seasonal floods, while another type was formed by slumping sediments in a delta area.