地球的金丰度  

The gold abundance of the earth

作　　者：马东升[1] 

机构地区：[1]南京大学地球科学系

出　　处：《黄金》1990年第6期1-7,共7页Gold

摘　　要：目前国内广泛使用的金在地球各圈层中的丰度主要是基于60年代早期的测试结果提出的.近20年来,微量金测试的样品种类、取样范围和分析精度以及所积累的数据均已远远超过以往的水平.本文通过对已有微量金研究资料的系统综合,提出地核、地幔和地壳的金丰度分别为900ppb、～1ppb和3ppb,地球整体金丰度应为284ppb,并推荐应以泰勒等1985年提出的上部大陆地壳平均金含量1.8ppb作为地表岩石地球化学研究和勘察中金含量的对比参照标准.The gold abundance of each sphere or layer of the earth employed extensively at present is based on the test result presented in the early sixties, however, it has been near 20 years since and the test specimen, sampling range, precission of analysis and data accumulated have far exceeded the past levels. Through systematic synthesis of the reference materials now available, this paper proposes that the gold abundance of earth core, mantle and earth crust are 900 ppb, ~lppb and 3ppb respectively and the gold abundance of the earth as a whole ought to be 284 ppb. In addition,this paper puts forward that the l.8ppb for the average gold content of the upper continent of the earth which was advanced by Taylor et al.in the year of 1985 should be the referential criterion for the geochemical study of surface rock and the investigation on gold content of the earth.

关 键 词：地球 金 丰度 

分 类 号：P618.510.9[天文地球—矿床学]