近来就太古宙时期大陆地壳的形成机制和增长速率问题发生了很大的争论,出现了两大派。一派认为在地球历史的早期阶段,地壳发生分离,在以后较年青的地壳形成过程中又多次发生了地幔的旋回。另一派认为或因地幔的化学分异作用,或因地幔派生物质的部分融熔,而使大陆地壳周期性地或连续地增长。本文我们从野外地质、地球化学和同位索资料的角度来讨论北大西洋克拉通的两个 Recently there was a great deal of controversy over the formation and growth rate of the continental crust in the Archean era. Two major factions emerged. One group believes that in the early stages of Earth’s history, the crust was separated and mantle cycles occurred again and again in the later younger crustal formation. Another group believes that the continental crust periodically or continuously increases due to the chemical differentiation of the mantle or the partial melting of the mantle-derived matter. In this paper, we discuss two North Atlantic craton from the perspective of field geology, geochemistry and isotope data