A Comparative Study of Shale Sedimentology: Relationships Between Sedimentary Environment and Shale Fabric

这是对来自不同气候和盆地类型的一套页岩单元的页岩中微组构的综合研究。所有页岩单元都包含从陆相到盆地的广泛沉积环境。所研究的单位是根据良好的地层控制和先前的沉积学研究而选择的。页岩组构代表了这些细粒岩石的运输、沉积和埋藏史的累积记录。目前，页岩单元的综合岩石学和沉积学案例研究严重不足，页岩组构特征的环境意义仍然知之甚少。在一套经过充分研究的页岩单元中，比较来自相同沉积环境的各种中微组构特征，将使我们能够识别对环境有意义的特征(或它们的组合)，并过滤掉局部因素(由于气候、生物控制、盆地类型等)。这项研究的数据将有助于织物分类的努力，将建立中、微观织物特征之间的相关性，可能导致识别特定于环境的织物关联，并将织物特征与基本工艺联系起来，最终将导致盆地分析研究的相当大的改进。

This a comprehensive study of shale meso- and microfabrics on a suite of shale units from a variety of climates and basin types. All shale units contain a wide range of sedimentary environments from terrestrial to basinal. The units under study were selected on the basis of good stratigraphic control and prior sedimentological studies. Shale fabrics represent the cumulative record of the history of transport, deposition, and burial of these fine-grained rocks. There is presently a severe deficiency of comprehensive petrographic and sedimentological case studies of shale units, and the environmental significance of shale fabric features is still poorly understood. Comparing the full range of meso- and microfabric features from equivalent sedimentary environments in a suite of well studied shale units will allow us to identify environmentally significant features (or combinations thereof), and to filter out local factors (due to climate, biological control, basin type etc.). Data from this study will benefit efforts of fabric classification, will establish correlations between mesofabric and microfabric features, will probably lead to the recognition of environmentally specific fabric associations and relate fabric features to basic processes, and will ultimately lead to considerable refinements in basin analysis studies.