Late Permian submarine fan turbidites are well developed in the Laibin\|Heshan area and are  particularly well exposed in the Matan and Penglaitan sections along the Hongshui River Varieties of sedimentary structures formed by sedimentary gravity flow have been found in the field sections, such as graded beddings, flute casts, load casts, dish structures, and slump\|folded layers The lithofacies of Late Permian Heshan Formation and Dalong Formation in the Penglaitan section and Late Permian Dalong Formation in the Matan section have been studied in detail. It is proposed that these formations were formed in a submarine fan Lithofacies such as massive sandstones with dish structures (B1), massive sandstones (B2), proximal turbidites (C), distal turbidites (D), irregularly interbedded sandstones and mudstones (E), slump\|folded layers (F), and shales and siliceous rocks with planktons (G) have been recognized in the study area The outer fan, mid fan lobe, mid fan channel, slope and incised valley facies associations have been summarised  The palaeogeographic implications of these turbidites are also discussed. It is here considered that these turbidites were formed in deep marine environments between the Central Guangxi carbonate platform and the Yunkai Oldland, with an average water depth between 300 m and 1000 m Provenance in the Heshan area was volcanic,while the sediments in the Laibin area were mainly terrestrial and were derived from the Yunkai Oldland to the east