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

9804961北美西部的科达马科迪勒拉是由多个构造地体合并而成的，它们在不同时间连接到稳定的北美克拉通上，然后从它们的原点被输送到不同的距离。这种运输和合并的历史并不为人所知，并产生了几个相互冲突的想法。这些建议解决了两个重要但相互冲突和相互排斥的假设，即目前位于不列颠哥伦比亚省西部的岛状超地体是起源于加利福尼亚州北部的白垩纪(没有或小范围北移)，还是从遥远的南部巴哈加利福尼亚州附近起源。这项工作将是对以前的数据和这些数据背后的假设进行仔细的重新评估。预计结果将有助于解决关于岛状地体起源的重要争议。

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.