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自七十年代末八十年代初,我国开始对太平洋西部和中部进行了海底沉积物孢粉分析并取得了一些成果.1983年5月我国在中太平洋北部进行了锰结核调查,在水深4000-5500米处采集了海底沉积物样品,本文是这些样品的孢粉分析结果.共计做了十二个表层样和一个柱状岩芯的二十八个样品,柱状岩芯长3.91米,样品的分离与处理基本上采用格里丘克法进行.表层沉积物取干样100克,柱状沉积物取干样50克,镉重液比重为2.2-2.3,样品加酸处理后,又加入分散剂偏磷酸钠(NaH_2PO_4),然后开始重液浮选离心.分析结果表明,调查区沉积物中含有孢粉,但含量不够丰富,不同类型沉积物中,孢粉含量差别较大.
Since the late seventies and the early eighties, our country began to carry out the analysis of the spore and sediments of the seabed sediments in the western and central Pacific Ocean and achieved some results.In May 1983, China conducted a survey on manganese nodules in the northern part of the Central Pacific Ocean, Seabed sediment samples were collected at 5,500 m, which is the result of sporopollen analysis of these samples.Twenty-eight samples of a total of twelve surface samples and one column core were prepared, with 3.91 m long core and a sample separation And the treatment is basically carried out by using the method of Grychuchu.The surface sediment is taken as a dry sample of 100 grams, and the columnar sediment is taken as a dry sample of 50 grams with a specific gravity of 2.2-2.3. The sample is treated with acid and then added with a dispersant sodium metaphosphate (NaH 2 PO 4), and then started the heavy liquid flotation centrifugation.The results show that the survey area contains sporopollen in the sediments, but the content is not rich enough, different types of sediments, the sporopollen content is quite different.