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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。
Carboniferous and Permian solid bitumen are widely distributed in the Wenpan Formation of Nanpanjiang Depression. There are 6 kinds of distributions of the produced bitumen in the field survey, which are observed under a microscope and can be divided into 6 types of microstructures and their characteristics are described. Through the description of the physical properties of the asphalt, the elemental analysis, the determination of the asphalt reflectivity and the x-ray diffraction analysis of the asphalt, the structural characteristics of the asphalt can be understood initially. It is considered that the asphalt is a highly metamorphic carbonaceous asphalt and carbon pitch . From the history of thermal evolution of source rocks, the formation and evolution of asphalt are discussed, and the periodicity of asphalt is analyzed.