A great quantity of stormrelated sedimentary structures， such as gutter cast， storm domal bodies， wavy erosion surface， lumachelle， graded bedding and wave ripple， were discovered in the Silurian Xiaoheba Formation in Jiangping area， northwestern Hunan Province. Three sequences with different vertical stacking patterns were deposited in the formation， whose vertical thickness is less than 5〖CS％0，0，0，0〗〖CS〗m. Sequence Ⅰ is the storm domal bodies with wavy erosion surfaces. Sequence Ⅱ is the graded bedding and massive bedding interval with gutter cast. Sequence Ⅲ is the graded bedding and horizontal bedding interval with wavy erosion surfaces. All the storm deposits are in situ or of proximal deposition. The occurrence of storm deposits indicates that during deposition of the Early Silurian Xiaoheba Formation， the palaeogeographic environment of northwestern Hunan Province was characterized by a shoreface setting with a relatively lower water depth.
