摘要
在有机岩石学参数和有机地球化学参数大量数据的基础上,研究了有机质丰度、有机质类型及有机质成熟度的成烃三要素,确认本区这套源层的有机质丰度高,有机质类型属腐植型(Ⅲ型)母质,有不同程度上的偏混合型(Ⅱ型)特征:有机质成熟度属成熟(淮南)到过成熟(淮北大部)阶段。深成变质作用和后期岩浆热变质作用的迭加是造成两淮煤田现今煤级分布格局的基本因素,雄厚的物质基础、良好的母质类型和适宜的成熟程度表明。
On the basis of analysing organic petrology parameters and Organic geochemistry paramters, a systematic appraisal has been made on the three essential factors of formed hydrocarban: abundance, type and maturity of organic matter, and comfirmed that the source layer
(C-P) was high in abundance of organic matter; The type of organic matter belonged to humic(typeⅢ) original material and tended the feature of mixed type ( type Ⅱ ) , organic maturity was mature
( Huainan ) to over mature ( mast parts of Huaibei ) rank. Deep buial metamorphic add up Thermal metamorphic process caused by magma of later period were basis factors which formed distribution pattern of the coal rank in Huainan and Huaibei coal fields now. Rich material bases, good type of Original material and Suitable maturity level indicate that C-P coal measures has good prospect of generating gas in the area
关键词
煤田
二叠纪
煤系
气源岩
煤气量
gas horizon
content of organic matter
types
maturity
gas
occurrence
resources
