Assembly and Ancestry of Gondwana: Tectonic History of the Borborema Province, Northeast Brazil

冈瓦纳大陆的聚集和祖先：巴西东北部博博雷马省的构造历史

• 批准号: 9316047
• 负责人: W. Randall Van Schmus
• 金额: $ 17.25万
• 依托单位: University of Kansas Center for Research Inc
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-02-15 至 1997-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9316047&HistoricalAwards=false
• 关键词: Assembly; Ancestry; Gondwana; Tectonic; History

9316047 Van Schmus The formation of Gondwana during late Precambrian to Early Paleozoic times represents one of the major assemblies of a large continent in geologic history. This event fused several Archean to Early Proterozoic cratonic masses, continental fragments and marginal orogenic belts of Africa and South America during the 600 My Pan African-Brasiliano orogeny. This project continues efforts to define the crustal history of the Borborema Province in the northeastern Brazilian shield prior to the formation of Gondwana by developing a precise chronology for assembly of the diverse lithospheric elements. The data obtained, along with studies underway by other groups in Brazil and Africa will provide better understanding of the ancestry and assembly of western Gondwana. ***

小行星9316047 冈瓦纳古陆的形成时期为晚前寒武纪-早 古生代是地质史上一个大大陆的主要组合之一。 这一事件融合了几个太古代到早元古代的板块，大陆碎片和边缘造山带的非洲和南美洲在600我的泛非-巴西造山运动。 该项目继续努力确定冈瓦纳大陆形成之前巴西地盾东北部博尔博雷马省的地壳历史，方法是为各种岩石圈元素的组合制定精确的年表。 所获得的数据，沿着巴西和非洲的其他研究小组正在进行的研究，将提供更好的了解西部冈瓦纳的祖先和组装。 ***