福建前泥盆纪地壳演化的探讨兼论闽东基底性质

Discussion on Evolution of Predevonian Crust in Fujian Province

福建陆壳起源于太古代,在其发展演化过程中具多期、多阶段的特点。本文将福建前泥盆纪地壳演化划分为太古代闽西南古陆(核)形成、早—中元代闽北古陆边缘活动增生和晚元古—早古生代板内裂谷活动,并分别阐述各阶段的演化特点,对闽东基底性质亦作一定的探讨。

The Fujian continental crust originated in Archean era possesses a characteristic of multi-phase and multi-stage activity during its evolution. The evolution of Fujian Predevonian crust is herein divided into three stages: the formation of Archean palaeocontinent in Southwestern Fujian. the active accretion of early-middle Proterozoic palaeocontinental margin in Northern Fujian and intra-plate riftogenesis during late Proterozoic-early Palaeozoic era. The author indicated the evolution characteristics of the separated stages and had a discussion on the basement characters in Eastern Fujian.