COLLABORATIVE RESEARCH: Paleomagnetic and Detrital Zircon Analyses of Cretaceous Gravina Belt Rocks, Southeast Alaska

小行星9404843 西北太平洋构造学中的一个重要问题是阿拉斯加东南部和不列颠哥伦比亚省沿海地区的亚历山大-弗兰格利亚海的位移和增生历史。 目前还没有达成共识的立场，在侏罗纪通过古新世的时间和构造过程中，加积到北美的加积是有争议的。 这个项目是亚利桑那大学和密西西比大学合作的成果，将通过古地磁和碎屑锆石年龄测定方法测试该地区的各种构造模型。 结果应有助于放置新的限制亚历山大-Wrangellia的位移和增生的历史。

9404843 Butler An important problem in the tectonics of the Pacific Northwest concern the displacement and accretionary history of the Alexander- Wrangellia terrane of southeast Alaska and Coastal British Columbia. There is presently no consensus on the positions of the terrane during Jurassic through Paleocene time and tectonic processes by which the terrane was accreted to North America are controversial. This project, a collaborative effort between working at the University of Arizona and the University of Mississippi., will test various tectonic models of the area by paleomagnetic and detrital zircon age dating methods. Results should help place new constraints on the displacement and accretionary history of the Alexander-Wrangellia terrane.