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Late Proterozoic Tectonic Development of Northeastern Brazil

Late Proterozoic Tectonic Development of Northeastern Brazil
巴西东北部晚元古代构造发育
批准号：
9614473
负责人：
W. Randall Van Schmus
金额：
$10.0万
依托单位：
University of Kansas Center for Research Inc
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1997
资助国家：
美国
项目状态：
已结题
起止时间：
1997-03-01 至 2000-02-29
来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9614473&HistoricalAwards=false
关键词：
LateProterozoicTectonicDevelopmentNortheastern

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中文摘要
翻译
该项目将继续研究巴西东北部和非洲中西部相关地区1100- 550 Ma的构造演化，重点是对该地区新近确定的1100-900 Ma造山带进行全面了解。使用的主要方法将是U/Pb、Sm/Nd和Rb/Sr地质年代学和同位素地球化学，并结合巴西合作者的其他研究。这些研究结果将有助于为西冈瓦纳600 Ma组合期间形成的最大褶皱带之一拼凑出新元古代大陆分裂和重组的详细图景。
英文摘要
9614473 Van Schmus This project to continue work on 1100 to 550 Ma tectonic evolution of NE Brazil and correlative parts of west-central Africa, with particular emphasis on developing a comprehensive understanding of a major 1100-900 Ma orogen recently defined in this region. The principal methods used will be U/Pb, Sm/Nd and Rb/Sr geochronology and isotopic geochemistry in conjunction with other studies by Brazilian collaborators. Results of these studies will be useful in efforts to piece together a detailed picture of continental breakup and reassembly during the Neoproterozoic for one of the largest fold belts formed during the 600 Ma assembly of the West Gondwana.
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