Seismic Profiling for Geometry, Deep Crustal Structure and Moho for Petrogenesis of Granite Batholiths: the Boulder Batholith

这项研究将使用垂直射入和广角反射剖面相结合的方法来研究有争议的Boulder岩基，这是蒙大拿晚白垩世的一块层状花岗岩。虽然通过对熔融关系、同位素和微量元素的研究，在花岗岩岩石成因方面取得了很大进展，但现代地震技术对地下成像的分辨率比以前高得多，对这些技术的应用却很少。通过正演模拟，用不同入射角的P波、S波和转换波照射地震边界，确定地震边界的性质，包括在基岩侵位过程中可能重建的莫霍线。

This research will use a combination of coincident vertical- incidence and wide-angle reflection profiling to study the controversial Boulder batholith, a late-Cretaceous epizonal granite in Montana. While much progress has been made on granite petrogenesis through studies of melting relations, isotopes and trace elements, little use has been made of modern seismic techniques that can image the subsurface with much higher resolution than has previously been possible. The nature of the seismic boundaries, including the Moho, which may be reconstituted during batholith emplacement, will be determined through forward modeling by illuminating them with P-, S- and converted waves at different angles of incidence.