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秦岭-桐柏-红安造山带记录了华南与华北陆块在古生代时期的拼合过程,包含了华北陆块在这个时期的三阶段南向增生.秦岭群可能是Rodinia超大陆裂解过程中从华南陆块或相同构造属性陆块分离并向北漂移到华北克拉通南缘的微陆块.宽坪群和二郎坪群低级变质沉积岩原岩可能是华北克拉通南缘俯冲带之上的增生楔,在北秦岭微陆块北向俯冲过程中受到变质变形作用.北秦岭超高压变质岩石在寒武纪的形成可能代表了一次小陆块与大陆块之间的碰撞事件,结果导致北秦岭地体增生到华北克拉通南缘.秦岭群中的麻粒岩相变质作用与秦岭群广泛发育的深熔作用和岛弧岩浆作用准同时发生,可能代表了古特提斯洋壳俯冲、弧后盆地关闭及其导致的弧-陆碰撞事件,导致华北大陆第二次向南增生.石炭纪高压变质作用代表了古特提斯洋壳俯冲和第二次弧-陆碰撞事件,结果导致华北大陆第三次向南增生.华南陆块与华北陆块之间的最终拼合发生在三叠纪,在西部的秦岭-桐柏-红安造山带记录了增生型弧-陆碰撞过程,而在东部的大别-苏鲁造山带表现为两个古老大陆之间的直接碰撞.
The Qinling-Tongbai-Hong’an orogenic belt recorded the assemblage of South China and North China terraces during the Paleozoic, including the three-stage southward accretion of the North China terrane during this period. The continental blocks or the same tectonic attributes are separated from each other and migrate northwards to the micro-continental blocks on the southern margin of the North China Craton.The protoliths of the Kuanping and Erlangping low-grade metamorphic sedimentary rocks may be accretionary wedges above the southern margin of the North China Craton , Metamorphosed and deformed during the northward subduction of the North Qinling micro-trending block.The formation of the UHP metamorphic rocks in the North Qinling in the Cambrian may represent a collision between a small continental block and a continental block. As a result, the North Qinling terrane Accreted to the southern margin of North China Craton.The granulite-facies metamorphism in Qinling Group coincides with the extensive development of deep-melting and island arc magmatism in the Qinling Group and may represent the paleocontinental oceanic crust subduction and backarc basin Closure and the arc-continent collision caused by it led to the second southward enhancement of the North China continent.The Carboniferous high-pressure metamorphism represented the ancient Tethyan oceanic crust subduction and the second arc-continental collision. The results Which resulted in the third Southward enlargement of the North China continent.The final assemblage between the South China terrane and the North China terrane occurred in the Triassic and the accretion arc-land collision process was recorded in the Qinling-Tongbai-Honggan orogenic belt in the west, The Dabie-Sulu orogen in the east shows a direct collision between two ancient continents.