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

0073888 Housen0073692 Johnson中生代和第三纪的增生和运输历史的岩石沿着西板块边缘的北美已经收到了相当多的研究，但迄今为止的工作一直无法解决之间的两个主要假设已经出现。 这些模式的不同之处主要在于增生的时间，特别是在随后的北向西平移沿着大陆边。 该项目将采取一种新的策略，重点是对这一时期沿着边缘沉积的盆地沉积物进行创新的碎屑物源分析，希望确定源岩，从而确定不同时期的碎屑岩的位置。 研究结果将有助于打破僵局，在理解构造历史的沉积物增生沿着太平洋边缘的北美在中生代和第三纪的时间。

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.