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海底残留沉积约占世界陆架面积的70％,而残留沉积中分布最广的是残留砂。有孔虫、介形虫等微体化石,其壳体大小与砂粒相当,而不同的属种又有特定的生活环境,因此它们在沉积过程中可以反映沉积条件,在搬运作用中又可看作指相颗粒。研究残留沉积物中微体化石的属种组合、保存状况、数量和大小等特点,应能为研究陆架残留沉积的产生与变化过程提供某种依据。 关于陆架残留沉积的化石资料不少,但大多局限于脊椎动物,软体动物等大化石,而对有孔虫、介形虫等微体化石群的详细情况尚缺乏分析。一般只是指出由于残
Residual sediments from the seabed account for about 70% of the world’s shelf area, while residual sand is the most widely distributed among the remaining sediments. Foraminifera, ostracods and other micro-fossils, the shell size and sand quite, and different species have a specific living environment, so they can be deposited in the deposition process can reflect the conditions of the transport can see For the phase particles. The study on the genus assemblages, conservation status, quantity and size of microflora in the residue sediments should provide some evidence for the study of the evolution and evolution of residual sediments. There are a lot of fossil information on the residual sediments of the shelf, but most of them are confined to large fossils such as vertebrates and molluscs. However, the detailed analysis of microfossils such as foraminifera and ostracode is still lacking. Generally only pointed out due to residual