论文部分内容阅读
武当山地块基性岩墙群的地球化学特征表明，它们为具大陆拉斑玄武岩特征的大陆板内岩浆侵入的产物，是古陆块裂解并保存在造山带内基底岩块中的重要证据，这表明南秦岭和扬子板块曾存在晋宁期固结的统一古陆块，该古陆块在新元古代早期发生了一次重要的裂解作用。
The geochemical characteristics of the basic dyke swarms in the Wudangshan block indicate that they are the products of magmatic intrusion in the continental plate characterized by continental tholeiitic basalts and are important evidences for the dissolution and preservation of paleocontinent blocks in the basement rocks in the orogenic belt This indicates that there was a unified ancient land mass in the South Qinling and Yangtze plates that had been consolidated during the Jinning Period. This ancient land masson occurred an important cleavage in the early Neoproterozoic.