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本文对昆明盆地沉积层地质资料作了较全面的收集和综合分析。根据古地磁资料,昆明盆地沉积层底界年龄值为四十万年;盆地南部含有丰富的早更新世动物化石和滇池流域已发现有中——晚更新世哺乳动物化石(均为洞穴堆积);盆地沉积层中的孢粉组合与本区现代植被十分接近,以及盆地沉积层成岩、成煤程度低于典型的第三系沉积层等事实,论证了昆明盆地形成时期为第四纪,主要含煤沉积开始于中更新世。初步建立了昆明盆地新生代地层系统,确立了第四系中更新统松华含煤组及上更新统昆明含煤组为主体的六个岩性段。沉积层总厚度大于1000米。
This article makes a comprehensive collection and comprehensive analysis of sedimentary geological data in Kunming basin. According to the paleomagnetic data, the sedimentary bed bottom boundary age value of Kunming Basin is 400,000 years; in the south of the basin is rich in Early Pleistocene animal fossils and Dianchi Lake basin has been found in the late Pleistocene mammalian fossils (both cave deposits); basin The sporopollen assemblage in the sedimentary layer is very close to the modern vegetation in this area, and the fact that the sedimentary layers of the basin were diagenetic and coal-forming is lower than that of typical Tertiary sediments. It is proved that the formation of the Kunming Basin was Quaternary, Sediment began in the Middle Pleistocene. The Cenozoic stratigraphic system of the Kunming Basin was initially established, and six lithologic sections mainly composed of the Quaternary Meso-Pleistocene Songhua Coal-bearing Formation and the Upper Pleistocene Kunming Coal-Bearing Formation were established. Sediment total thickness of more than 1000 meters.