COLLABORATIVE RESEARCH: Geochronologic and Geologic Framework of Western Amazonia and Its Bearing on Possible Reconstructions with Laurentia-Baltica

小行星9705758 在整个超大陆旋回中主要板块的构造和位置是一个长期的目标，前寒武纪研究在其中发挥了很大的作用。 然而，许多前寒武纪克拉通的数据不完整，需要对这些克拉通中潜在相关的造山带、火成岩和沉积省和结构进行研究，以测试重建和建立模型，南美洲的亚马逊河是中元古代晚期的一个关键克拉通，这可能涉及与劳伦提斯-波罗的海超大陆的可能联系，以及随后的大陆碎片阵列。 这项工作将涉及与巴西地质学家合作对若干地区进行地质年代学、地球化学和实地调查。 预计结果将有助于分析超大陆周期，并增加知识的作用，亚马逊克拉通在劳伦特-波罗的海超大陆。

9705758 Condie The configuration and location of major plates throughout supercontinent cycles is a long-term goal in which precambrian research plays a large part. However, there are incomplete data for many Precambrian Cratons, and studies of potentially correlative orogenic belts, igneous and sedimentary provinces and structures in these cratons is needed to test reconstructions and to develop models Amazonia in South America is a key craton for late mesoproterozoic time, which may involve possible connections with the Laurentia-Baltica supercontinent, and the subsequent array of continental fragments after breakup. This work will involve geochronologic, geochemical and field investigations of several areas in cooperation with Brazilian geologists. Results are expected to facilitate analysis of supercontinent cycles and increase knowledge of the role played by the Amazon craton in the Laurentia-Baltica supercontinent.