Uplift and Exhumation of the Axial Zone in the Pyrenean Orogen, Spain

比利牛斯山脉是晚白垩世和早中新世之间的克拉通内造山带，是非洲-伊比利亚板块和欧洲板块之间会聚运动的结果。在比利牛斯山脉形成之前，没有大规模的洋壳俯冲，也没有形成岩浆，但最近的研究表明，地壳发生了150公里的大规模缩短。最近的ECORS地震区段允许开发一系列详细的事件来解释这些数据。如果是正确的，提出的事件序列对西地中海的构造具有重要意义。这个项目的目的是通过使用裂变径迹地质计时学来检验这些想法，以帮助区分预测的不同隆起模式。这些结果应该有助于理解海底俯冲量较小的挤压碰撞。

The Pyrenees are an intracratonic mrogen which formed between late Cretaceous and Early Miocenes as a result of convergent motions between the Afro-Iberian and European plates. No large-scale subduction of ocean crust preceded the formations of the Pyrenees and no magma formed, yet recent work indicates 150 km of massive crustal shortening. The recent ECORS seismic section has allowed a detailed sequence of events to be developed to explain these data. If correct, the proposed sequence of events has importance for the tectonics of the western Mediterraneans. The purpose of this project is to test these ideas by using Fission Track geochronometry to help discriminate between the different uplift patterns predicted. Results should help in understanding compressional collisions where the amount of seafloor subduction has been minor.