COLLABORATIVE RESEARCH: Cretaceous Paleomagnetic Tests of the Baja British Columbia Hypothesis

小行星9804961 北美洲西部的科迪勒拉山脉是由一系列构造岩块混合而成的，这些构造岩块在不同时期被搬运到不同的距离后，附着在稳定的北美洲克拉通上。 这种运输和合并的历史并不为人所知，并引起了一些相互矛盾的想法。 这些建议解决了两个重要的，但相互矛盾和相互排斥的假设，即是否岛的superficial，目前在西部不列颠哥伦比亚省，起源于白垩纪北部的加州（没有或小北运动）或从遥远的南部，靠近下加利福尼亚。 这项工作将是对以前的数据和这些数据所依据的假设进行仔细的重新评估。 预计结果将有助于解决有关岛屿起源的重要争议。

9804961 Kodama The Cordillera of western North America is composed of an amalgamation of tectonic terranes, attached at various times onto the stable North American craton, after being transported variable distances from their origins. This transport and amalgamation history is not well known and has given rise to several conflicting ideas. These proposals address two important but conflicting and mutually exclusive hypotheses, namely whether the Insular superterrane, presently in western British Columbia, originated in the Cretaceous north of California (no or small northward movement) or from far to the south, near Baja California. The work will be a careful reassessment of prior data and the assumptions underlying those data. Results are expected to help resolve the important controversy about the origins of the Insular terrane.