【摘要】 南盘江坳陷温浏构造石炭、二叠系固体沥青分布广泛,野外调查主要见有6种产状分布,显微镜下观察,可分为6类显微结构,并对其特征进行了描述。通过对沥青的物理性质的描述、元素分析、沥青反射率的测定、沥青的x射线衍射分析,初步可以了解温浏沥青的结构特征,认为温浏沥青属高变质的碳质沥青和碳沥青类。从生油岩的热演化史,讨论了沥青的形成及演化过程,并对沥青的多期性进行了分析。更多还原

【Abstract】 Solid asphalt is widely dispersed over Carboniferous and Permian forma- tions in Wenliu structure of Nanpanjiang depression. It has been discovered that there are six types of occurrence in field survery and six micro-textures in microscope observation. Wenliu asphalts is a type of highly metamorpho- sed carbonaceous asphalt and anthraxolite according to the physical proper- ties, determined by x-ray diffraction, C~-, H~-analysis and the measuring of reflectance. The Permian source rock in the area has reached a postmaturity stage. The precess of asphalt formation and evolution are discussed from the thermal evolution history of that source rock. Properties multistage formation of the asphalts are analyzed also.更多还原