Wucaiwan Formation - Shishugou Formation - Member of the Junggar Basin - Xinjiang - China

The Middle Jurassic deposits of the Junggar Basin in Xinjiang are known as the Wucaiwan Formation. The Wucaiwan Formation is composed of light grey sandstones. The environments were fluvial to deltaic.The Wucaiwan Formation is limited to the eastern part the Junggar Basin of Xinjiang.

The Wucaiwan Formation is now considered a part of the Shishugou Formation