Isotopic Age Constraints on the Kinematic and Magmatic Evolution of Terranes in the Northern Philippines

该项目将利用U-Pb同位素研究，提供菲律宾北部几个地层成分的新地质年代学数据。每个地体都以主要断裂带为界，并包含不同的岩石类型和构造组合。地质年代学将提供一个“绝对时间”框架，据此可以解释运动学、古地磁和地层数据。选定进行详细研究的地区包括Angat和Zambales蛇绿岩和选定的吕宋岛中部科迪勒拉和S. Sierra Madres的岩体。该结果将为该地区的其他工作人员提供急需的可靠时间标记，并将有助于为菲律宾北部的构造演化制定更好的模型。

This project will provide new geochronological data on several terrane components in the northern Philippines using U-Pb isotopic studies. Each terrane is bounded by major fault zones and contains a distinct assemblage of rock type and structures. The geochronology will provide an "absolute time" framework upon which kinematic, paleomagnetic and stratigraphic data can be interpreted. Areas selected for detailed study include the Angat and Zambales ophiolites and selected plutons from the Central Cordillera and S. Sierra Madres of Luzon Island. The results will provide much needed reliable time markers for other workers in the region, and will help formulate better models for the tectonic evolution of the northern Philippines.