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贵州省瓮安地区末元古宙陡山沱组磷灰岩沉积地层产出大量具刺磷酸盐微体化石。相类似的磷酸盐微体化石早先多描述、报道自全球不同地区的中奥陶世以晚至泥盆纪地层。而对它们的磷酸盐壳壁是原生或次生 ?它们是属于微体浮游植物 ,还是微体浮游动物等问题 ,长期未能取得一致认识。作者基于形态特征对比 ,壳壁结构及其成分分析 ,确认贵州瓮安陡山沱组具刺磷酸盐微体化石 ,原本是有机质壁的浮游生物 ;且很可能亲属于微体浮游植物 ,而非微体浮游动物。它们是末元古宙瓦兰格 ( Varaanger)冰期后 ,埃迪卡拉 ( Edicarian)后生动物辐射分布之前 ,微体生物在成磷事件中 ,被强烈磷酸盐化作用的结果
In the Weng’an area of Guizhou Province, a large amount of spiked phosphate-bearing microfossils are produced in the sediments of the Doushantuo Formation in the Proterozoic Archean. A similar description of phosphatic microfossils was previously described and reported from the Middle Ordovician to different Devonian strata in different parts of the world. And their phosphate shell wall is primary or secondary? They belong to micro-phytoplankton, or zooplankton and other issues, the long-term failed to achieve consensus. Based on the comparison of morphological characteristics, the analysis of the shell wall structure and its composition, the author confirmed that the Doushantuo Formation in Weng’an, Guizhou Province is a plankton that is native to the cytoplasm and is likely to be related to micro-phytoplankton rather than phytoplankton Microbial zooplankton. They were the result of intense phosphatation of micro-organisms in the phosphorus-forming event prior to the radiative distribution of metazoans in Edicarian after the Varaanger ice age of the Last Proterozoic