摘要
金衢盆地广泛分布着不同类型的第四纪红土。通过X射线荧光光谱法(XRF)对金衢盆地的85个样品进行了测试。结果表明:(1)主量元素组成以SiO2、Fe2O3、Al2O3为主,K、Na、Ca、Mg等易溶组分的含量很低,TiO2含量的平均值高于UCC值;(2)MnO含量在网纹红土和均质红土的交界处明显聚集,推测与不同沉积物交界处理化性质突变有关;(3)在剖面上,SiO2、Fe2O3、AL2O3等化学成分和硅铝率沿剖面变化的趋势,以及基岩和上覆沉积层的元素组成、化学风化指标和Ti/Zr的区别,均表明所研究的金衢盆地红土剖面具有较好的相似性,与典型的岩石风化壳存在明显差别。
Quaternary red earth are widely distributed in Jinhua - Quzhou basin. 85 samples of red earth were measured by means of X - ray fluorescence. The results show that： （ 1 ） The major content are consist of SiO2, Fe2O3 and Al2O3 mainly, and K, Na, Ca, Mg and P are very low. The average content of TiO2 is higher than that of UCC. （ 2 ） The element of MnO is accumulated between plinthitic and typical red earth, speculating that related to geochemical characteristics variations of different sediments. （3） The changing trend of chemical Composition and weathering characteristic value, the difference between red earth and mother rock in w （Si）/w （A1） and w （Ti）/w （Zr） are indicated that the red earth in Jinhua - Quzhou basin is different from weathering crust.
出处
《广东微量元素科学》
CAS
2008年第10期12-17,共6页
Trace Elements Science
基金
浙江省自然科学基金项目(项目批准号:X506313)
国家自然科学基金项目(项目批准号:40571067)资助
关键词
加积型红土
风化特征
主量元素
金衢盆地
aggrade red earth
weathering characteristics
major elements
Jinhua - Quzhou basin
