Rodinia超大陆的构型是前寒武纪地质学研究的热点，但由于全球~1300-750 Ma相关的岩石单元缺乏等原因，研究进展缓慢。目前Rodinia超大陆中只有劳伦、西伯利亚、波罗的和卡拉哈里大陆的位置相对确定，其他大陆的位置还存在较多争论。近年来中外学者在华北克拉通厘定出多期基性岩墙（岩床）以及一套保存较好的中元古代晚期至新元古代早期地层，为探讨华北克拉通在Rodinia超大陆中的位置提供了很好的材料。本项目期望通过对最新报道的华北克拉通卢龙地区~775 Ma基性岩墙群进行详细的古地磁学和年代学研究，从该岩墙群中获得一个有精确年龄约束的高质量的古地磁关键极。使用该关键极和劳伦、澳大利亚、华南等大陆同时期的古地磁极，结合其他中元古代晚期至新元古代中期可靠古地磁和地质数据等进行古大陆再造，使华北克拉通在Rodinia超大陆中的位置得到准确厘定。

The Rodinia supercontinent is one of the hottest topics in the study of the Precambrian geology. Lacking of rock units of ~1300-750 Ma around the world blocks the progress on the configuration of Rodinia. At present, only the positions of Laurentia, Baltica, Siberia and Kalahari are relatively well constrained in Rodinia; and for the other continents, there are still controversies. Fortunately, four periods of mafic dykes (sills) and well-preserved strata with age of ~1.1-0.9 Ga were reported from NCC, they provide a chance to study the relationship between NCC and Rodinia. Recently, ~775 Ma mafic dykes were reported from the Lulong area in the NCC. We want to conduct a combined paleomagnetic and geochronological study on the dykes to obtain a high-quality paleomagnetic pole with precise age constraint. Using this keypole and the coeval poles from Laurentia, Australia, South China, Siberia, India and Congo, aided by the late Mesoproterozoic to mid-Neoproterozoic paleomegnetic and geological data, we will have a robust paleogeograhpic reconstruction, which will better constrain the NCC’s position in Rodinia.