江西省中部上震旦统和下寒武统微古植物化石的发现及其意义

赣中1:5万东固幅区调,首次在上震旦统老虎塘组和下寒武统牛角河群采获丰富的微古植物化石,从而为这套地层的划分提供了古生物佐证。两组微古植物各具特色,但也存在一些共同分子,表现为连续演化的特点,说明震旦系和寒武系的沉积是连续的。

THE DISCOVERY OF UPPER SINIAN AND LOWR CAMBRIAN MICROFOSSIL PLANTS IN CENTRAL JIANGXI PROVINCE AND THEIR SIGNIFICANCE

In the regional surveys of the Donggu Sheet at a scale of 1:50,000 in central Jiangxi,abunant microfossil plants were for the first time collected in the upper Sinian Laohutang Formation and the Lower Cambrian Niujiaohe Group,thus providing paleontological evidence for the classification of this sequeuce of strata.The microfossil plants of the two formations have their own peculiarities,but have some common elements too.This shows that the deposition of the Sinian and Cambrian were continuous.