The researchers studied the sedimentary characteristics of the Jurassic Badaowan Formation in the Dishuiquan area. They found three main sedimentary facies: braided river, braided river delta, and lacustrine. These facies contained various subfacies and microfacies. The evolution model proposed includes a sequence of braided river, lake, and braided river delta facies. The sediment source shifted over time, leading to the development of different sedimentary environments.