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

北美科迪勒拉包含许多外来的地体，这些地体是在中生代晚期到第三纪期间被吸积到大陆边缘的。研究的重点是目前在太平洋西北部和加拿大的科迪勒拉山脉北部发现的地体。然而，最大的Terrane之一是墨西哥西部的格雷罗Terrane，也是这个项目的主题。地体由侏罗纪-白垩纪海底熔岩、火山碎屑和沉积岩组成。该项目将包括测绘、同位素表征和放射性年龄测定。这些数据和其他数据将被整合起来，以约束北美西缘中生代古地理模型和格雷罗地体及其增生的作用。

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.