Role of Mid-Crustal Plutonism in Extreme Crustal Extension, Southern Basin and Range

中地壳深成作用在地壳极端伸展、南部盆地和山脉中的作用

• 批准号: 9405175
• 负责人: Barbara John
• 金额: $ 12万
• 依托单位: University of Wyoming
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-06-15 至 1999-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9405175&HistoricalAwards=false
• 关键词: Role; Mid; Crustal; Plutonism; Extreme

9405175 John Magmatic intrusions are commonly associated with major continental extensions, however the causal relationship between them are poorly understood. This study will focus on an area in the southern Basin and Range province where a combinations of good exposure and large geophysical anomalies offer the prospect of placing constraints on the relationship between extension and plutonism. This work will obtain geometric data or the plutonic rocks and the rocks will be dated by several techniques. The petrogenesis of the plutonic rocks will be studied using major trace and REE chemistry. Combined with extensive regional data, these new data will allow a vigorous correlation between continental extension, middle crustal magmatisms/plutonism and the documented geophysical anomalies.

9405175约翰岩浆侵入作用通常与主要的大陆伸展有关，但它们之间的因果关系却鲜为人知。这项研究将集中在南部盆地和山脉省的一个地区，在那里，良好的曝光率和较大的地球物理异常相结合，可能会限制伸展和深成岩之间的关系。这项工作将获得几何数据或深成岩，并将通过几种技术确定岩石的年代。用微量元素和稀土元素化学方法研究深成岩的成因。结合广泛的区域数据，这些新数据将使大陆伸展、中地壳岩浆/深成作用与记录的地球物理异常之间建立强有力的关联。