After the mid-belt movement, the folds in southeastern Zhejiang uplifted into land and experienced 400 million years (1900 ~ 1500 Ma) of uplift and erosion. Until the late Mesoproterozoic, with the gradual cracking and separation of the southeastern Zhejiang landmass, the basin continued to expand and Chencai Chen began to deposit (1300 ~ 1500ma). Its formation environment was developed on the basis of ocean crust, with submarine basalt erupting in the early stage and deposited in coastal shallow sea in the late stage, forming basic volcanic rocks-terrigenous clastic rocks-carbonate rocks, which is the product of initial tensile environment on the basis of ocean crust.

At the same time or later than that of Chencai Chen, the northwestern part of Zhejiang, which is located on the edge of Yangtze paraplatform, began to sag and expand, forming a basin. In the early stage, it was dominated by submarine basic volcanic eruption and shallow shelf facies siliceous argillaceous rock deposition, which gradually transformed into neutral and intermediate acid volcanic eruption, and finally formed the spilite-keratophyre formation with a thickness of 2900 ~ 3000m·m m. At this time, due to the influence of the early Jinning movement, the crust gradually rose, the basin gradually shrank, and the seawater retreated, gradually transforming into a continental environment. Under the action of compressive stress, the continental acidic volcanic rocks of Shuangxiwu Group began to erupt, accumulating calc-alkaline volcanic rocks with a thickness of1800 m. Obviously, this volcanic rock was formed in a mature continental margin arc tectonic environment.

At the end of Mesoproterozoic (1000 ~ 900 Ma), the early Jinning movement finally took place, and the basins in Caichen and Pingshui-Shuangxiwu periods folded and uplifted one after another, forming mountains and land. Among them, on the basis of the late Proterozoic uplift and under the influence of the early Jinning movement, the uplift in southeastern Zhejiang was further strengthened, resulting in a strong closed syncline fold, and its hub tilted to the northeast, forming a large anticline structure macroscopically. Under the action of high geothermal gradient and strong lateral compressive stress, it experienced regional dynamic heat flow metamorphism, forming amphibolite facies metamorphism of medium pressure facies series, accompanied by local migmatization. Under the influence of the early Jinning movement, the northwest of Zhejiang province, located on the southeast edge of the paraplatform, was folded into mountains and land, which led to the east-west closed syncline fold and rootless fold in the plate. Macroscopically, a large-scale inversion anticline with a hub dipping to the northeast was formed, accompanied by regional dynamic metamorphism, but no corresponding magmatic intrusion was found, reflecting that the geothermal gradient in this area is small and the stress is dominant.

The direct result of the early Jinning movement was that the uplift area in southeastern Zhejiang was connected with the Yangtze paraplatform to form land, but they were not connected and could not be welded into a unified continent. At this time, the Jiangshan-Shaoxing fault at the junction of the two landmasses began to form, and at the same time, strong ductile shear deformation occurred in the deeper structural layer. The appearance of Jiangshan-Shaoxing fault zone will play a very important role in controlling the Phanerozoic geological development history of platform area.

After the early Jinning movement, the island arc area on the edge of the paraplatform rose strongly and experienced a long period of erosion and accumulation. In the middle period of Jinning cycle, 400 m thick molasse formation and 0/000 m thick terrigenous clastic formation were formed. Due to the small basin in this period, the subsidence rate of the basin was less than the sedimentary accumulation rate, and the coastal shallow sea gradually transitioned to the transitional environment between land and sea, forming the complex continental clastic sandstone formation in Hongchicun period. This rapid change of lithofacies may reflect a small-scale tectonic movement-the middle Jinning movement, which made Hongchicun Formation parallel or unconformity with Luojiamen Formation in some areas.

After the middle period of Jinning movement, the regional stress field changed from compression to tension. Under this background, the volcanic rocks of bimodal alkaline basalt-alkalescent rhyolite in Shangshu Formation erupted strongly in the whole region, accumulating bimodal volcanic rocks with a thickness of1700 m m.

At the end of Jinning cycle and the late Jinning movement, the southeast edge of the Yangtze paraplatform was fully folded and uplifted into land, and the Jinning structural layer produced the second NNE-trending closed recumbent fold, forming a large-scale anticlinorium structure with a macroscopic tendency to southwest. Magmatic activity is strong, mainly composed of diabase-alkaline granite and quartz diorite-granodiorite. Among the metamorphic rocks in southeastern Zhejiang, there are small intrusions such as peridotite (serpentine) and hornblende near deep faults. Influenced by the late Jinning movement, metamorphism is slight, mainly schistosity and slight metamorphism of local rocks. The migmatization is not developed.

The Jinning tectonic-thermal event, which was formed at 800Ma, completely ended the development stage of the Yangtze paraplatform and the pre-Sinian geosyncline in the uplift area of southeast Zhejiang, and made the two tectonic units merge into a unified South China ancient land in the whole province, and northwest Zhejiang entered the platform development stage.