The relationship between trace elements in coal and organic functional groups of coal,also some of aromatic structure,was investigated by using curve fitting of
Sandy debris flow deposits are present in Unit I during Miocene of Gas Field A in the Baiyun Depression of the South China Sea.The paucity of well data and the
Most vein minerals deposited in fractures of the Jialingjiang Formation from Libixia section,Hechan area include a large amount of saddle dolomite and accompany