下录位于广东省遂溪县境内,为雷州半岛两大埋藏泥炭集中分布区之一。下录埋藏泥炭是我国南部滨海地带迄今为止所发现的泥炭层厚、储量大、埋藏浅、形成时期较早、保存完好的矿点。研究它的特征、成因和发育,对于发展煤炭学和泥炭学,探讨古气候和古植被的演变、海陆变迁等古地理环境具有重要意义。同时,对寻找和勘测滨海地区的泥炭也具有一定的生产价值。

Xialu peat in Suixi county, Guangdong Province, is the well-preserved and shallow buried peat which is found in the seashore zone of south China, characterized by thick peat layer, large reserves and earlier peat-forming period. It mostly belongs to woody peat, with higher carbonization, benzenbitumen, humie acid and oil contents, having certain industrial value. On the other hand, the peat contains high ash, low cellulose, hemicellulose and nitrogen. According tostratum and sporo-pollen analysis, the.peat accumulation process can be divided into 3 sedimcntal cycles, and each cycle began from the semiment of rotten wood. Geologically, each cycle began in the period of transgression when vegetation disappeared. Xialu peat formed in 60000-30000 yr. B.P.Because crust subsidence and accumulation rate of organic residues were in balanced state in the process of peat formation, the hugely thick:peat basin was formed.