河北省金的矿源层和地球化学块体  

Gold ore source beds and geochemical blocks of Hebei

作　　者：宫进忠 杨春 

机构地区：[1]河北省地球物理勘查院,河北廊坊065000

出　　处：《黄金地质》2004年第4期55-60,共6页Gold Geology

基　　金：原地质矿产部"八五"重点基础地质项目基金资助项目(8502212)

摘　　要：以区域化探岩石和水系沉积物测量成果为依据,讨论河北省范围内Au矿源层的地球化学判别、岩浆热液型金矿成矿过程的地球化学推导、Au的地球化学块体以及水系沉积物区域地球化学异常特征等问题。地层标准剖面和典型侵入体系统的岩石地球化学调查表明,在Au矿源层和非矿源层之间,w(Au)差异很小,以其作为判别标准是不可行的,但H2O+,CO2,S,Cl,F,Hg等组分却存在显著差异,据此提出一个新的矿源层———中新元古界碳酸盐岩。Au的区域地球化学背景研究显示,密云—青龙、怀安—崇礼—赤城、平泉和阜平—赞皇等地区存在着地球化学块体,而水系沉积物地球化学异常分布与这些块体基本一致,相互对应。According to the achievement of rock and stream sediment survey in geochemical exploration, the geochemical judgment of gold ore source beds, geochemical deduction of gold mineralization for magmatic hydrothermal deposit, gold geochemical blocks and stream sediment geochemical anomalies characteristics of Hebei were discussed. Systematic rock geochemical survey to standard sections and typical intrusions shows that the difference of gold content is very small between ore source beds and non-ore source beds. The gold content of rocks can't be used as the judgment standard, but H_2O^+, CO_2, S, Cl, F,Hg content exists outstanding difference. In accordance with the above view, a new gold ore source bed is asked:The Middle-Upper Proterozoic carbonate rocks.Gold region geochemical background research shows: Miyun-Co-Qinglong, Huaian-Co-Chongli-Co-Chicheng, Pingquan and Fuping-Co-Zanhuang areas exists geochmical blocks, stream sediment geochemical anomalies are corresponding with respect to geochemcial blocks.

关 键 词：金矿源层 地球化学 水系沉积物 河北 

分 类 号：P632+.1[天文地球—地质矿产勘探]