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对辽宁地区同种母质不同成土环境发育古红土剖面和不同母质发育古红土剖面中微量元素含量及Rb/Sr比值变化进行了研究,结果表明:成土母质是影响辽宁地区古红土微量元素含量及其地球化学行为的重要因素,不同母质发育的古红土微量元素含量存在较明显的差异,表现为:千枚岩>石灰岩>第四纪松散沉积物>片麻岩。辽宁地区第四纪古红土剖面中Rb/Sr比值明显高于洛川古土壤剖面,且Rb/Sr比值由剖面上部到下部有增大趋势。这表明辽宁地区第四纪古红土形成的古环境较湿润,随着时间的推移气候变得越来越干旱。
The trace element contents and Rb / Sr ratio changes of the palaeosol with different parent materials in different soil-forming environments in Liaoning Province and the palaeosol sections with different parent materials were studied. The results showed that the soil parent materials affected the content of trace elements And their geochemical behavior. The content of trace elements in ancient laterite with different parent materials has obvious differences, which are shown as: phyllite> limestone> Quaternary loose sediments> gneiss. The Rb / Sr ratio of Quaternary Paleongtong section in Liaoning Province was significantly higher than that of Luochuan paleosol section, and the Rb / Sr ratio increased from the upper part to the lower part of the section. This shows that the paleoenvironment of Quaternary paleosol formed in Liaoning Province is relatively humid and the climate becomes more and more arid over time.