福建福鼎市南溪地区出露一套古生代地层，通过研究其岩性、所含化石、稳定同位素、构造形迹等特征及与其它基底对比分析，表明：（１）其虽具有复理石建造乃至地槽沉积的某些特征，但总体而言仍属华夏古陆基础上发展起来的地台型盖层沉积；（２）该古生代浅变质岩系可分为上、下两套；（３）其上套为上古生界，可沿福鼎—宁波裂陷槽与浙江同时代地层类比；下套为下古生界，具体为奥陶系—泥盆系，可以和广东、海南、浙江等地区的同时代地层类比。沉积物以正常碎屑为主，火山物质较少。沉积环境为华夏古陆裂解过程产生的裂陷槽，其碎屑源于华夏古陆中相邻的微陆块 A series of Paleozoic strata have been exposed in Nanxi, Fuding City, Fujian Province. By studying its lithology, fossils, stable isotopes and tectonic features, and comparing with other basalts, it shows that: (1) And some of the features of the sediments of the Trough, but in general they are still deposited on the platform-type caprock developed on the basis of the Cathaysian ancient land. (2) The Paleozoic metamorphic rocks can be divided into upper and lower sets; (3) ) On the set of the Upper Paleozoic, along the Fuding - Ningbo rift groove and Zhejiang contemporaneous stratigraphic analogy; the next set of Lower Paleozoic, specifically the Ordovician - Devonian, and Guangdong, Hainan, Zhejiang And other areas of the same age stratigraphic analogy. Sediment-based normal debris, less volcanic material. The sedimentary environment is a fissure trough generated by the catharsis in the Huaxia paleocontinent. Its debris originated from the adjacent micro-continental blocks