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1984年,由地质科学研究院组织,开展了“中国几个主要陆块晚古生代以来的古地磁研究”,笔者等承担了滇东地区路南和昆明盆地早第三纪地层的古地磁测定。路南和昆明盆地发育第三纪地层,在岩性特征及其划分上比较相似(图2);但在路南盆地的第三系中产有大量的古脊椎动物化石,而在昆明盆地尚未发现相应化石。对昆明盆地第三系的时代划分过去仅有岩石地层对比上的依据。1971年,中科院古脊椎动物古人类研究
In 1984, organized by the Institute of Geological Sciences, the “paleomagnetic study of several major continental blocks in China since the Late Palaeozoic” was conducted. The author undertook the paleomagnetic measurements of the Early Tertiary strata in the south of South Yunnan and the Kunming Basin. The Quaternary strata in Luonan and Kunming basins are similar in lithology and classification (Figure 2). However, there are a large number of paleo-vertebrate fossils in the third line of Luonan Basin and no sediments have been found in the Kunming Basin The corresponding fossil. The division of the Tertiary in the Kunming Basin was based on the comparison of past rock strata. 1971, Chinese Academy of Sciences ancient vertebrate paleontology research