Collaborative Research: Geology and U-Pb Geochronology of West Laurentia Piercing Points: Database for Rodinia Restorations and Cordilleran Miogeocline Evolution

0107088张伯伦0107024研究罗迪尼亚超大陆解体时，劳伦西亚西缘的几个前寒武纪岩石构造组合被截断，但目前的数据太稀少，无法明确地识别匹配的大陆地块，西伯利亚地台、南极洲和澳大利亚是可能的匹配。该项目旨在加强美国西北部选定地点的地质年代学、岩石学和构造数据，以缩小可能的匹配范围。结果，结合其他陆块现有的和新的类似数据，有望阐明Rodinia的性质以及大陆解体后Rodinia碎片的后续演化。

0107088 Chamberlain0107024 Sears0107107 DoughtyUpon the breakup of the supercontinent Rodinia, several Precambrian lithotectonic assemblages were truncated along the western margin of Laurentia, but present data are too sparse to unambiguously identify the matching continental blocks, and the Siberian platform, Antarctica and Australia are possible matches. This project is aimed at strengthening the geochronologic, petrographic and structural data for selected sites in northwest US in order to narrow the possible matches. Results, combined with existing and new similar data from other continental blocks are expected to clarify the nature of Rodinia and the subsequent evolution of the fragments of Rodinia after continental breakup.