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

这项研究将使用重合垂直入射和广角反射剖面相结合的方法来研究备受争议的巨石岩基，这是一种位于蒙大拿州的晚白垩世浅成花岗岩。虽然通过熔融关系、同位素和微量元素的研究在花岗岩成因方面取得了很大进展，但很少有人利用现代地震技术来成像比以前可能的更高分辨率的地下图像。地震边界的性质，包括可能在岩基侵位过程中重建的莫霍面，将通过正演模拟来确定，方法是在不同的入射角度用P波、S波和转换波照射它们。

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.