Collaborative Research: An Inclination Correction for the Valle Group Strata: Determining the Cretaceous Paleolatitude of the Southern Peninsular Ranges Terrane

据报道，分布在北美西部的许多构造地层地体的古地磁研究中都发现了浅层磁倾角。自获得磁性特征以来，这些浅倾角被解释为需要显著的向北平移。然而，实验室压实研究或沉积岩表明，某些类型的沉积岩中的浅倾角是压实作用的结果。该项目将研究位于下墨西哥的瓦莱集团的这一可能性，该集团以前曾被用来主张大幅向北迁移。这些结果应阐明半岛山脉地体的平移史，并证明倾角变浅在沉积岩中的作用。

9902712KodamaA shallow magnetic inclination has been reported in paleomagnetic studies of numerous tectono stratigraphic terranes distributed along Western North America. These shallow inclinations have been interpreted as requiring significant northward translation since acquisition of the magnetic signature. However, laboratory compaction studies as well or sedimentary rocks indicate that shallow inclinations in some kinds of sedimentary rocks result from compaction. This project will examine this possibility for the Valle group in Baja Mexico that previously has been used to argue for significant northward translation. Results should clarify the translation history of the peninsular Range terrane and demonstrate the role of inclination shallowing in sedimentary rocks.