冀北地区脉金成矿作用与地台活化区富碱热流体活动

VEIN GOLD MINERALIZATION AND THE ACTIVITY OF ALKALI-RICH HEAT FLUID DURING PLATFORMACTIVIATION IN NORTHERN HEBEI PROVINCE

本文通过冀北金矿化集中区的地质背景，矿床地质、地球物理特征及地球化学特征的综合研究，提出了富碱热流体在古老地壳深大断裂系中活动对地台活化，岩浆作用乃至成金作用的重要意义，将产于变质岩中金矿床与岩浆岩中金矿床的成因统一起来。它们的金活化条件及成矿机制是相同的，成矿物质来源为中生代地幔与古老地壳的混合来源。

An,extensive study of the geological setting, metallogenetic characteristies,and geophysical and geochemical.features,it is believed that alkali-rich heat fluids in deep fault systems play a significant role in platform activiation,magmatism and gold metallogeney. The genesis of gold deposits which occured in rock masses appears identical to that found in Archean rocks,i.e. they are formed under the same conditions of gold activiation and metallogenesis. Such observed characteristics suggest the mixing of Mesozoic mantle and Paleo-Crust supplied ore material.