摘要
在现代植物和地层样品的植物硅酸体中,封闭了一部分原来植物细胞的有机物质,可以用于AMS^(14)C(加速器质谱计^(14)C测年)和碳同位素分析.而且植物硅酸体本身所含有的氧、氢同位素与植物生长环境中的氧、氢同位素有直接的关系,可以利用植物硅酸体氧、氢同位素进行占环境分析。它的最大的优势还在于可以高分辨率、连续地从黄土(或其它沉积物)剖面中获取植物硅酸体化石,植物硅酸体有可能成为类似于利用深海有孔虫进行氧同位素研究的新的陆地生物化石指标。
A part of the organic matter orriginated from the parent plant cells is enclosed in the phytoliths from both modern plants and stratigraphic samples. This enclosed organic matter can be used for AMS14C dating and isotopic analysis. Furthermore, the oxygen and hydrogen isotopes contained in phytoliths are directly related to those in the living environments of the parent plants. Hence, the oxygen and hydrogen isotopes in phytoliths can be used for palco-environmental analysis. The priority of this method is that phytoliths can be continuously collected from the profiles of loess as well as other sediments with high-resolution. Thus plant phytoliths can be used as a new type of terrigenous paleontological fossil index in oxgyen-isotope analysis as the deep sea foraminifera is used in deep sea oxygen - isotope analysis.
出处
《海洋通报》
CAS
CSCD
北大核心
1997年第3期49-56,共8页
Marine Science Bulletin
基金
国家自然科学基金(49676295)
