Two types of tempestites developed in beach and inner shelf environments respectively are discovered in Silurian system of Tazhong area, Tarim basin.

The discovery of the tempestites is of great significance to restructure the palaeogeography of Middle-Late Cambrian in Huangshi, eastern Hubei Province.

According to their relative position and features, the tempestites can be divided into two types of fore-beach deep-water tempestite and back-beach shallow-water tempestite.