介形虫化石的电子探针分析及其有机质研究

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ELECTRONIC PROBE MICROANALYSIS OF OSTRACODA AND STUDY ON THEIR ORGANICS

Research Institute of Exploration and Dvelopment, Daiqing Petroleum Management Bureau

摘要: 本文论述了利用电子探针(EPMA)等分析手段,对松辽盆地白垩系的10口井23块样品的介形虫化石壳体成分分析资料。表明壳体中镁钙比值与沉积相带有明显的相关关系,应用X-射线能谱、扫描电子显微镜和热解色谱等分析手段,对介形虫化石内核充填物中有少量氨基酸等有机质存在,并在热演化条件下,可以生成烃类。该项研究将为微体化石的深入研究提供新的途径,为生油研究提供新的资料。

Abstract: Using EPMA.etc,the shell compositions of Cretaceous Ostracoda of 23 samples from 10 wells in Songliao basin were analysed.The data obtained reveal a distinct relation between values of magnesium/ manganese ratio and sedimentary facies belts.With the application of X-ray spectroscopy,scanning electron microscopy and pyrolysis chromatography,it has been found that there is a little organics including amino acid in the fillings of the cores of Ostracoda,which could be evolved to hydrocarbons.This result may provide new way for further study of microfossils and new data for the study of oil generation.

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