【摘要】 松粉温—压模拟实验研究表明 ,热演变过程中随颜色加深 ,花粉个体大小收缩率可达 4 0 %以上 ,并且气囊比本体收缩率更高。因此 ,在孢粉化石鉴定时应考虑热演变程度对孢粉形态的影响。花粉热变指数、H/ C、O/ C原子比及镜质体反射率都是良好的热成熟度指标 ,前者在未熟—低熟阶段反映演变程度更为敏感 ,后者进入成熟阶段以后 ,能更详尽地描述热演变程度。花粉属于 1 型干酪根 ,含有大量的类脂组分 ,是一类良好的生油母质 ,其生烃能力与浮游藻类接近更多还原

【Abstract】 The temperature-pressure simulation experiments of pine pollens indicate that the contraction ratio of pollen grains may exceed 40% and that of the air chamber is even greater. Therefore the influence of thermal activity on pollen morphology should been considered in studies of sporopollen fossils. Thermal alteration index(TAI), atom ratios of H/C, O/C and reflectivity are all favorable thermal maturity parameters. The sensitivity of TAI to thermal activity is high in crudity-low ma- turation stages. Thermal activity can be better described by reflectivity from maturation stage to high maturation stage. Pollen belong to type Ⅱ kerogen. It contains plentiful lipoid component, and is excellent source of petroleum. Its capacity to generate hydrocarbon is close to phytoplankton.更多还原