华北克拉通古老大陆地壳组成及演化

    Composition and Evolution of the Ancient Basement of the North China Craton

    • 摘要: 对鞍本、冀东、鲁西、阴山等早前寒武纪典型地区和深部物质进行了深入研究,总结了华北克拉通早期地壳形成演化历史。揭示出鄂尔多斯地块本身强烈卷入了古元古代晚期构造热事件。首次在华北克拉通划分出3个>2.6 Ga古陆块。

       

      Abstract: We carried out integrated geological, geochronological and geochemical studies on typical early Precambrian areas of the North China Craton, such as Anshan-Benxi, eastern Hebei, western Shandong and Yinshan, and synthesized the general geological records of the Archean basement relating to Archean crust formation and evolution of the North China Craton. This study also revealed that the Ordos basement was involved in a widespread late Paleoproterozoic tectono-thermal event. We defined and outlined three ancient terranes containing abundant 3.8~2.6 Ga rocks for the first time in the North China Craton, namely the Eastern Ancient Terrane, Southern Ancient Terrane and Central Ancient Terrane.

       

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