珠江口盆地(西部)早第三纪的古环境变迁与盆地的形成及演化紧密相关。
The changes of paleoenvironment in western Pearl River Mouth basin is closely associated with the formation and evolution of the basin.
文昌组浮游藻类相对丰度高，表明始新世珠江口古湖的表层水初始生产力高。
The high relative abundance of the fossil planktonic algae indicates the high primary surface productivity of the palaeo-lake within the Oligocene.
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