黔南桂北早石炭世寺门煤系两种不同古地理类型的比较

本文通过黔南桂北红茂煤田与罗城煤田早石炭世寺门煤系的主要特征和在垂向上、横向上沉积环境变化的对比,认为红茂聚煤盆地与罗城聚煤盆地在早石炭世分别属于两种不同的古地理类型:前者为三角洲;后者为泻湖。同沉积构造活动导致的应力海岸对此二煤盆的同期异相起了重要作用。这对于研究华南早石炭世聚煤规律有重要意义。

COMPARISON BETWEEN THE TWO DIFFERENT TYPES OF PALEOGEOGRAPHY OF SIMEN COAL SERIES IN THE EARLY CARBONIFEROUS EPOCH IN NORTH GUANGXI-SOUTH GUIZHOU

The thesis compares the Hongmao coal field with the Luocheng coal field in North Guangxi-South Guizhou with regard to their main characteristics such as thickness, lithology, fossils, sedimentary environments both in vertical and lateral direction of Simen coal series in the early carboniferous epoch. It is concluded that the Hongmao and the Luocheng coal-accumulating basin belongs respectively to different types of paleogeography, the former delta, the latter lageon, during the Simen Age. The stressed coast, which was caused by activities of synsedimentary faults, played an important role in the formation of synchronous heterophases. It is of great significance for the research into the coal-accumulating processes in South China in the early carboniferous epoch.