A Reexamination of the Ballooning Plutons Hypothesis

岩浆的侵位是地球演化的主要过程之一 在造山带中， 和较低的地壳水平。 其中一个公认的模式， 强有力的侵位是“气球”或 底辟的原地膨胀。 然而，使用的许多功能 支持气球飞行的能力也可以在其他类型的 炮位 这个项目将重新审视几个经典的 被认为是由现代微膨胀形成的 结构分析和变斑基质关系， 开发和约束每个热机械模型。 的 这项研究的结果将对 花岗岩类的侵位，特别是 造山带的变形/变质作用， 传递热量和岩浆的过程。

Emplacement of magmas represents one of the major processes in orogenic belts for transferring heat and materials from mantle and lower crustal levels. One of the accepted models for the forceful emplacement of plutons is that of "ballooning" or in situ inflation of a diapir. However, many of the features used to support ballooning can also develop during other types of emplacement. This project will re-examine several classic plutons thought to have formed by ballooning using modern micro- structural analysis and porphyroblast-matrix relationships to develop and constrain thermo-mechanical models for each. The results from this study will have important implications for the emplacement of granitoids, particularly the nature and timing of deformation/metamorphism in orogenic belts, and for the process of transferring heat and magma in the crust.