Paleomagnetism and Geochronology of Precambrian Rocks, Tanzanian Craton, East Africa

前寒武纪克拉通和超大陆的重建及其解体依赖于严格约束的古地磁数据。非洲拥有广泛而复杂的前寒武纪地盾，存在着大量的数据。该项目将从东非的坦桑尼亚克拉通获得一些关键的古地磁极，从而能够检验关于元古代构造过程的几个相互矛盾的假说，包括元古代超大陆的组成和组装的时间，以及克拉通周围的活动带是来自深成岩源还是来自深成岩源。这些结果应该会提供对其他前寒武纪地盾有用的对比数据。

The reconstruction of Precambrian cratons and supercontinents and their breakup relies on well-constrained paleomagnetic data. Africa has an extensive and complex Precambrian shield, and considerable data exists. This project will obtain a number of key paleomagnetic poles from the Tanzanian Craton of east Africa that will allow testing of several conflicting hypotheses regarding tectonic processes during the Proterozoic, including the make up and timing of assembly of a Proterozoic supercontinent and whether the mobile belts surrounding cratons originated by ensialic or ensimatic sources. Results should provide comparative data useful in other Precambrian shields.