This study presents Raman spectroscopic data paired with scanning electron microscopy (SEM) images to assess solid bitumen composition as a function of solid bitumen texture and association with minerals. A series of hydrous pyrolysis experiments (1–103 days, 300–370 °C) using a low maturity (0.25% solid bitumen reflectance, BR_o), high total organic carbon [(TOC), 14.0 wt%] New Albany Shale sample as the starting material yielded pyrolysis residues designed to evaluate the evolution of solid bitumen aromaticity with increasing temperature and heating duration. Solid bitumen was analyzed by Raman spectroscopy wherein point data were collected from accumulations that ranged in size and degree of association with the mineral matrix. Raman spectroscopy results show that with increasing temperature and experimental duration, solid bitumen aromaticity increases and compositional variability decreases. With regards to texture and composition, coarser-grained solid bitumen (>1.3 μm from nearest mineral grain) has consistently higher, but less variable aromaticity than thinner, wispy solid bitumen which is more intimately associated with the mineral matrix. Collocated scanning electron microscope images were used to provide qualitative assessments of porosity hosted by the organic matter. These paired data sets suggest that solid bitumen porosity development and molecular composition are linked, and these parameters are related to the textural relationships of the organic matter within the whole rock. These results are discussed with perspective towards understanding how rock fabric and texture can influence organic matter evolution during thermal maturation of organic-rich marine shales and inform our broader understanding of these important energy resources.

本研究提供了与扫描电子显微镜 (SEM) 图像配对的拉曼光谱数据，以评估固体沥青成分与固体沥青质地和与矿物结合的关系。使用低成熟度（0.25% 固体沥青反射率，BR _o), 高总有机碳 [(TOC), 14.0 wt%] 作为起始材料的新奥尔巴尼页岩样品产生的热解残余物旨在评估固体沥青芳香性随温度和加热持续时间的升高而演变。通过拉曼光谱分析固体沥青，其中从与矿物基质结合的大小和程度不等的堆积物中收集点数据。拉曼光谱结果表明，随着温度和实验时间的增加，固体沥青芳香性增加，成分变异性降低。就质地和成分而言，粗粒固体沥青（距离最近的矿物颗粒 > 1.3 μm）始终比与矿物基质更密切相关的稀薄、纤细的固体沥青具有更高的但变化较小的芳香性。并置的扫描电子显微镜图像用于对有机物所承载的孔隙度进行定性评估。这些成对的数据集表明，固体沥青孔隙度的发展和分子组成是相关的，这些参数与整个岩石内有机质的结构关系有关。讨论这些结果的目的是了解岩石结构和质地如何影响富含有机物的海相页岩热成熟过程中的有机质演化，并为我们更广泛地了解这些重要的能源资源提供信息。这些参数与整个岩石内有机质的结构关系有关。讨论这些结果的目的是了解岩石结构和质地如何影响富含有机物的海相页岩热成熟过程中的有机质演化，并为我们更广泛地了解这些重要的能源资源提供信息。这些参数与整个岩石内有机质的结构关系有关。讨论这些结果的目的是了解岩石结构和质地如何影响富含有机物的海相页岩热成熟过程中的有机质演化，并为我们更广泛地了解这些重要的能源资源提供信息。