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

[9805029]沃德北美西部的科迪勒拉是由构造地体的合并组成的，这些构造地体在从它们的起源地经过不同距离的移动后，在不同的时期附着在稳定的北美克拉通上。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观点。这些建议解决了两个重要但相互矛盾和相互排斥的假设，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北部的白垩纪（没有或很少向北移动）还是来自遥远的南部，靠近下加利福尼亚州。这项工作将是对先前数据和这些数据背后的假设进行仔细的重新评估。研究结果有望帮助解决有关岛状地体起源的重要争议。

9805029 Ward 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.