摘要：

中国南方是指西至金沙江—元江断裂、西北至龙门山断裂、北至城口—房县—襄樊—广济断裂，东北至郯城—庐江断裂,东至黄海和东海，南至南海的中国南方的广大地区。面积约2 000 000 km2 。在露头剖面和钻井部面的地层学和岩石学研究所取得的各种定量及定性资料的基础上，采用单因素分析综合作图法，编制出了中国南方下奥陶统新厂阶和宁国阶的各种单因素图以及相应的新厂期和宁国期岩相古地理图。在这两幅古地理图中，有7个主要的古地理单元，即滇西台地、康滇陆、扬子台地、斜坡、江南盆地、东南台地和华夏陆。前5个古地理单元属康滇古地理体系，后两个古地理单元属华夏古地理体系。这两幅古地理图的最大特征是定量，即每个古地理单元的划分和确定都有确切的定量的单因素图为依据和数据为依据。这种定量的岩相古地理图在我国南方早奥陶世还是首次出现。这种定量岩相古地理图在古地理学中是个重大的进展，对石油、天然气以及其他沉积矿的预测和勘探有重要的指导作用。

Abstract:

 The South China in this paper refers to the broad region bounded on the west by Jinshajiang River-Yuanjing River Fracture, on the northwest by Longmenshan Fracture, on the north by Chengkou-Fangxian Xiangfan-Guangji Fractuse, on the northeast by Tancheng-Lujiang Fracture, on the east by Huanghai Sea and Donghai Sea, and on the south by Nanhai Sea. The area is about 2 000 000 km2. Based on the quantitative and qualitative data from the study of stratigraphy and petrography of outcrops and well sections, according to the single factor analysis and comprehensive mapping method, the single factor maps of the Xinchang Stage and Ningguo Stage of the Lower Ordovician, and the lithofacies palaeogeography maps of the Xin chang Age and Ningguo Age of the Early Ordovician in South China were compiled. In these two lithofacies palaeogeography maps, there are 7 principal palaeogeographic units, i.e. Dianxi Patform, Kangdian Land, Yangtne Platform and Cathaysian Land. The former 5 units belong to the Kangdian Palaeogeography System, and the latter 2 units belong to the Cathaysian Palaeogeography System. The most important character of these two lithofacies palaeogeography maps is quantification. Quantification means that the determination of each palaeogeographic unit is based on the accurate quantitative data and single factor map. This is the first time in the study and mapping of the Early Ordovician is South China. These quantitative lithofacies palaeogeography maps are an important development in palaeogeography, and are the guide to the prediction and exploration of oil, gas and other sedimentary gas and other sedimentary mineral resources.