Did Eastern Mexico and the Eastern Margin of Laurentia Collide During the Grenvillian Orogeny
Did Eastern Mexico and the Eastern Margin of Laurentia Collide During the Grenvillian Orogeny
批准号:
9909459
负责人:
Kenneth Cameron
金额:
$17.0万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1999
资助国家:
美国
项目状态:
已结题
起止时间:
1999-12-01 至 2002-11-30
中文摘要
格勒维利亚造山运动影响了加拿大东部和美国东部和南部海岸,大约1.0Ga,通常被解释为北美和东南部一个大陆块之间的大陆-大陆碰撞。然而,对于是否涉及南美洲(亚马逊)、非洲、墨西哥或其他克拉通,存在相当大的争议。该项目将测试并采用一种相对较新的测年技术,试图确定墨西哥是否是与造山带南部碰撞的大陆块的可行候选者。结果将有助于弄清前寒武纪板块的位置,新测年方法的成功测试预计将适用于其他地方。
英文摘要
9909459CameronThe Grenvillian Orogeny that affected eastern Canada and the eastern and southern seaboard of the U.S. at about 1.0 Ga is normally interpreted to be a continent-continent collision between North America and a large continental mass to the southeast. However considerable controversy exists about whether South America (Amazonia), Africa, Mexico or some other craton was involved. This project will test and employ a relatively new dating technique to attempt to determine if Mexico is a viable candidate for the continental mass that collided with the southern part of the Orogen. Results will help clarify precambrian plate positions and a successful test of the new dating method is expected to be applicable elsewhere.
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依托单位:
Collaborative Research: Sr-Nd-Pb-Hf Isotope Studies of Deep Crustal Xenoliths from the Southwestern U.S.A. and Northern Mexico
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COLLABORATIVE RESEARCH: Evolution and Assembly of Archean and Lower Proterozoic Elements in the Trans-Hudson Orogen, Saskatchewan
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Cenozoic Volcanism and Crustal Evolution in Northern Mexico:Integrated Studies of Volcanic Rocks and Xenoliths
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Evolution of Wyoming Craton Lithosphere: Xenolithic Constraints From the Bearpaw Mountains, Montana
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Technical Support for Isotopic Studies of Crust and Upper Mantle Evolution
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批准号:9018675
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依托单位:
海外基金