Isotopic and Petrologic and U-Pb Geochronology of the Guerrero Terrane, Western Mexico

墨西哥西部格雷罗地体的同位素、岩石学和 U-Pb 地质年代学

• 批准号: 9117268
• 负责人: Joaquin Ruiz
• 金额: $ 12.45万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-01-01 至 1994-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9117268&HistoricalAwards=false
• 关键词: Isotopic; Petrologic; Pb; Geochronology; Guerrero

The North American Cordillera contains a number of exotic terranes that were accreted to the continental margin during late Mesozoic to Tertiary time. Study has focused on those Terranes presently found in the northern part of the Cordillera in the Pacific northwest and Canada. One of the largest such Terranes however, is the Guerrero Terrane of western Mexico and is the subject of this project. The Terrane consists of Jurassic- Cretaceous submarine lavas volcaniclastics, and sedimentary rocks. The project will include mapping, isotopic characterization and radiometric age dating. These and other data will be integrated to constrain models of mesozoic paleogeography of the western margin of North America and the role of Guerrero Terrane and its accretion.

北美科迪勒拉山脉包含了许多异国情调的 晚期增生到大陆边缘的碎屑岩 中生代至第三纪。 研究的重点是那些 目前发现于安第斯山脉的北方部分， 太平洋西北部和加拿大。 最大的此类地体之一 然而，是墨西哥西部的格雷罗地， 这个项目的主题。 地球由侏罗纪- 白垩纪海底火山碎屑岩、火山熔岩和沉积岩。 该项目将包括绘图、同位素表征和 放射性年龄测定法 这些数据和其他数据将被整合 以约束西部中生代古地理模型 北美洲边缘和格雷罗地体及其 增积