热卤水对凡口铅锌矿狮岭矿段有机质的影响

通过对狮岭矿段石炭纪和泥盆纪地层的围岩和矿体的样品进行TOC、GC和GC-MS等实验分析,探讨了盆地热卤水对该矿段有机质的影响。实验结果表明,相对于围岩,盆地热卤水对矿体中的有机碳含量和饱和烃组分的破坏程度较大,并且使矿体中的芳香烃含量增加。造成这种现象的主要原因是盆地热卤水氧化了有机质,并且氧化作用主要在饱和烃的中长链上和芳香烃的菲侧链上进行,饱和烃氧化结果是产生有机酸、醇类和脂类;芳香烃的氧化结果使萘、联苯、菲的含量增加而甲基菲指数降低。

Influence of the basin hot brines on organic matter in Shiling Fankou lead - zinc deposit

This paper probes into the influences of the basin hot brines on organic matter in Shiling of Fankou lead-zinc deposit by analysis of TOC content,GC and GC-MS content from walk-rock and ores.The experiment's results indicate that TOC content and saturated hydrocarbon were destroyed intensely in the hot brines,and the content of aromatic hydrocarbon increased.And the oxidation process takes place on long-chain n-alkanes,mepthy-lphenanthrenes(MP) and dimepthylphenanthrenes(DM-P).The products of hydrocarbon's oxidation are aliphatic acid,alcohol and ester,and the aromatic hydrocarbon's oxidation leads to the increases of naphthalene(N),biphenyl(Bi) and phenanthrene(Ph) whereas a decrease of Methylphenanthrene index(MPI).