New data on geochemistry |
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Authors: | Zhengzhang Tao |
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Institution: | (1) Chengdu College of Geology, China |
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Abstract: | Described in the present paper is the evolution of the concept of “clarke” introduced by A. E. Fersman. Based on the data
available in literature, the atomic clarkes of chemical elements in the earth’s crust were computed and the logarithmic distribution
curves were drawn by means of the micro-computer (PC-1500). Volume percentages of the chemical elements in the orust were
also computd and the legarithmic curves also drawn. Finally, the isotopic abundances of each element in the crust were computed. |
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Keywords: | |
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