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Proterozoic Crustal Evolution, Midcontinent Region, USA

Proterozoic Crustal Evolution, Midcontinent Region, USA
美国中部大陆地区元古代地壳演化
批准号:
9118515
负责人:
W. Randall Van Schmus
金额:
$5.18万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1992
资助国家:
美国
项目状态:
已结题
起止时间:
1992-03-01 至 1993-08-31

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中文摘要
翻译
首席研究员将利用年代测定和其他地球化学技术,研究来自美国大陆中部地区元古代地壳的岩石。本工作的主要目的是更好地了解花岗流纹岩省下较古老基底的范围,以及花岗流纹岩岩浆的成因。这项工作对帮助我们了解北美的地质演化非常重要。
英文摘要
The principal investigator will study rocks from the Proterozoic crust of the midcontinent region of the USA, utilizing age-dating and other geochemical techniques. The main aim of the present work is to better understand the extent of older basement beneath granite-rhyolite provinces, as well as the genesis of the granite- rhyolite magmas. This work is important in helping us understand the geologic evolution of North America.
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