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COMPARISON OF GEOCHEMISTRY OF METALS IN SEDIMENTS FROM SOME TYPICAL ROCK AREAS
Author(s): 
Pages: 172-176
Year: Issue:  2
Journal: ACTA SCIENTIAE CIRCUMSTANTIAE

Keyword:  沉积物金属地球化学形态岩性;
Abstract: 研究了4种成片分布的典型岩性(页岩、石灰岩、花岗岩、黄土)区域沉积物金属元素(Li,Na,K,Ca,Sr,Ba,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,Al等共16种)总量与形态特征.结果表明:这4种岩性区域沉积物金属元素含量与形态均有显著的差别.与其它岩性相比,黄土地区易迁移元素含量高,而重金属含量显著较低;其金属元素残渣态含量高,而有机态、铁锰氧化物态和可交换态含量低.石灰岩地区重金属含量较高,而易迁移元素如Na,Sr等含量则较低;其重金属元素残渣态含量不偏低,表明经风化作用释放出来的重金属参与了次生矿物的形成过程而得以富集.花岗岩地区重金属含量居中,而Fe和Al含量较高;其金属元素残渣态含量不偏高则与风化作用较强有关.页岩地区元素含量与形态均居中,代表了各种岩性的平均水平.
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