Collaborative Research: Isotopic, Geochronologic, and Paleomagnetic Studies of Cretaceous Coastal Basins: Assessment of Northward Translation of the 'Baja-BC' Superterrane

北美西部板块边缘地区的中生代和第三纪地体的增生和搬运史已经得到了相当多的研究，但是迄今为止的工作还不能确定出现的两种主要假设之间的关系。这些模式的差异主要在于增生的时间，特别是随后沿大陆边缘向北的地形平移。该项目将采取新的策略，重点对这一时期沿边缘沉积的盆地沉积物进行创新的碎屑物源分析，以期确定源地体，从而确定不同时期地体的位置。研究结果将有助于打破对北美太平洋边缘中生代和第三纪地体增生构造史的认识僵局。

0073888 Housen0073692 JohnsonThe mesozoic and tertiary accretion and transport history of terranes along the western plate margin of North America has received considerable study, however work to date has been unable to resolve between the two major hypotheses that have emerged. These models differ mainly in the timing of accretion and particularly in the subsequent northward terrane translation along the continental margin. This project will take a new tack and focus on a innovative detrital provenance analysis of basin sediments that were deposited along the margin during this time period is the hopes of pinning the source terranes and therefore the locations of terranes at various times. Results should help break the impasse in understanding the tectonic history of terrane accretion along the pacific margin of North America during mesozoic and tertiary time.