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THE SIGNIFICANCE OF ELEMENT ABUNDANCES OF ROCKS IN THE STUDY OF GEOCHEMICAL BLOCKS |
CHI Qing-hua |
Institute of Geophysical and Geochemical Exploration, CAGS, Langfang 065000, China |
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Abstract The abundances of 14 ore forming elements such as Au, Ag, Cu, Pb, Zn, Sb, Hg, W, Sn, Mo, U, Cr, Ni and Co in exposed crust and various rocks within different geochemical landscapes have obvious significance in the division and study of geochemical blocks of stream sediments. The application of abundances of chemical elements in rocks to the study of geochemical blocks can not only find out the geneses of geochemical blocks of stream sediments in different landscape regions but also provide the comparison conditions for the study of geochemical blocks. Therefore, the abundances of chemical elements in different tectonic units or geochemical landscape regions should be set up, and the study of their relationship with abundances of chemical elements in rocks and stream sediments should be strengthened so as to provide important and more rational evidence for the division and interpretation of geochemical blocks.
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Received: 10 September 2003
Published: 24 December 2003
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