The elemental content of Niue Island soils as an indicator of their origin
The elemental content of Niue Island soils as an indicator of their origin
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DOI：
10.1080/00288306.1993.9514572
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发表时间：
1993-06
影响因子：
2.2
通讯作者：
N. Whitehead;J. Hunt;D. Leslie;P. Rankin
中科院分区：
文献类型：
--
作者：
N. Whitehead;J. Hunt;D. Leslie;P. Rankin
采用X射线荧光法对241个纽岛赤红壤进行了常量元素和微量元素含量的测定，以推测土壤来源。分析表明，与世界上其他红土相比，二氧化硅含量很低，而镁、磷、钒、铬、锶、Y、汞和α-COUNT的含量都很高。其分布模式与方解石和白云石的风化作用一致，而不是来自沉积的火山灰。风化作用是这些土壤中磷含量相对较高的原因的一种特别新颖的解释。土壤中含有负的Ce异常，与海水或珊瑚的来源一致，但不是火山灰。如果最近的结果表明在土壤中原位形成磁铁矿是可行的，那么土壤矿物学与方解石/白云石的来源完全一致。方解石的来源也与附近海床上相对缺乏火山灰和非常少的风尘沉积相一致。放射性含量也不符合...
Abstract The major and trace element contents of 241 Niue Island lateritic soils were determined, mainly by X‐ray fluorescence, to deduce soil origins. The analyses showed very low SiO2 content, and a high content of Mg, P, V, Cr, Sr, Y, Hg, and α‐counts, compared with other laterites worldwide. The distribution patterns are consistent with derivation by weathering from calcite and dolomite rather than from deposited volcanic ash. Weathering is a particularly novel explanation for the origin of the relatively high content of P in these soils. The soils contain a negative Ce anomaly, consistent with an origin from seawater or coral, but not volcanic ash. If recent results showing in situ formation of magnetite in soils are applicable, the soil mineralogy is wholly consistent with an origin from calcite/dolomite. An origin from calcite is also consistent with the relative lack of volcanic ash on the seabed nearby, and very low deposition of aeolian dust. The radioactivity content is consistent neither with ...