福建省大地构造单元划分及基本特征

Subdivision and characteristic of tectonic units in Fujian Province

以地层划分、对比、沉积岩建造、火山岩建造、侵入岩浆活动和变质变形等地质记录为基础,以板块理论为指导,对福建省大地构造单元进行了重新认识和划分。将福建省区划分为华夏地块(Ⅴ-3)、东南沿海岩浆弧(Ⅴ-4)和闽中结合带(Ⅴ-7)等3个Ⅱ级构造单元,武夷古弧盆系(Ⅴ-3-1)、南平—宁化(夭折)裂谷(Ⅴ-3-2)、闽西南陆表海盆地(Ⅴ-3-3)、闽东沿海岩浆弧(Ⅴ-4-1)和松溪—尤溪蛇绿混杂岩(Ⅴ-7-1)等5个Ⅲ级单元,以及建宁古弧后盆地(Ⅴ-3-1-1)等18个Ⅳ级构造单元。

Based on geological records from stratigraphic division and correlation, sedimentary and volcanic formation, magmatic activities, deformation and metamorphismthe, the author makes a new division on the tectonic units of Fujian region with the guidance of plate theory. It can be subdivided into three second-order tectonic units, five third-order tectonic units and eighteen fourth-order tectonic units. The second-order tectonic units include Cathaysia Massif （V-3） , magmatic arc of coastal Southeast （V-4） and conjunctive zone of central Fujian （V-7）. The third-order tectonic units contain ancient arc-basin System of Wuyi （ V -3-1 ）, Nanping-Ninghua （ failed ） rift （ V-3-2）, epicontinental sea basin of southwest Fujian （ V-3-3 ）, magmatic arc of coastal eastern Fujian （ V-4-1 ） and Songxi-youxi ophiolite m61ange （V-7-1）. The fourth-order tectonic units consist of the Jianning ancient back are basin and other seventeen tectonic units.