Collaborative Research: Evaluation of a Ridge Subduction Model for the Early Paleozoic Evolution of the Pampean Orogen, Argentina

0073852阿森松岛0001150 GrometArgentina包含的基底岩石是理解冈瓦纳古太平洋边缘古生代演化的关键，以及那里的事件与劳伦提斯阿巴拉契亚边缘发展的可能关系。 最近的工作在结构复杂的岩石的东Sierras Pampeanas产生的数据与现有的模型的预测冲突的演变，这一边缘的大陆碰撞。 该项目将测试和进一步调查这些结构和变质特征是否可能是经历了洋脊俯冲的大陆边缘/增生棱柱体的结果。 这些结果对重新组合冈瓦纳超大陆的尝试具有相当大的意义。

0073852 Simpson0001150 GrometArgentina contains basement rocks that are key to understanding Paleozoic evolution of the paleo-Pacific margin of Gondwana and the possible relationship of events there to the development of the Appalachian margin of Laurentia. Recent work in the structurally complex rocks of Eastern Sierras Pampeanas has produced data in conflict with predictions of existing models of the evolution of this margin by a continental collision. This project will test and further investigate the possibility that the structures and metamorphic signatures are the result of a continental margin/accretionary prism that underwent ridge subduction instead. Results have considerable implications to attempts to reassemble the Gondwana supercontinent.