某些海生藻类在陆架沉积中的分布及其古环境意义

在我国陆架表层和柱状沉积中不但含有丰富的孢粉、硅藻，而且还有很多其它藻类，如刺球藻、甲藻、椭球藻等。从在沉积物中分布状况的分析，我们清楚地看到，虽然剌球藻、椭球藻在分类系统中的地位尚不清楚，但它们都是海生藻类，刺球藻的形体随着水深增大而，它们不仅可指示海相环境，而且可根据不同类型的刺球藻数量推测水深。椭球藻喜生于温带－亚热带中北部水深水于４０ｍ的海域，多甲藻在水深较大的暖水环境数量较多。它们具有重

The Distribution Patterns of Certain Marine Algae in the Sediments of the Continental Shelf and Their Paleoenvironmental Significance

There are not only abundant spore, pollen and diatom grains, but also many other algae, such as Hystrichosphaera. Pyrrophyta and Baltisphaeridium. in the sediments of the continental shelf of China. Thouth the texological status of Hystrichosphaera and Baltisphaeridium are not yet clear, they are marine plants.The Hystrichosphaera increases gradually in size with the deepening of water. So,it is not only an indicator of ocean environment but can also be used to infer paleo -water depth. The Baltisphaeridium is adapted to live in the sea of temperate and north-middle subtyopic regions, with a depth over 40 m. There is a greater quantity of peridium in the warm environment with deeper water. They are of great paleoenvironmental significance.