Investigation of Mid Paleozoic Apparent Polar Wander for North America and the Influence of Major Orogenic Events

古生代板块重建依赖于大陆块体的明显极移路径，这是由稳定克拉通地区地层的古磁记录确定的。通过对比不同地块的古地磁记录，可以确定纬度分异。目前，由于较年轻的叠印的广泛存在，在北美早、中泥盆世的中古生代APWP记录中存在一个大的、构造上重要的缺口。为了填补这一空白并避免叠印（通常与磁铁矿有关），将对爱荷华州和加拿大西北地区之间露头的化石石灰石和红白云岩进行采样计划。结果应有助于建立可靠的北美克拉通期APWP。

Paleozoic plate reconstructions rely on apparent polar wander paths for continental blocks as determined by paleo- magnetic records from strata in stable cratonic areas. By comparison of paleomagnetic records from different blocks, latitudinal separations can be determined. Currently, due to the widespread presence of younger overprints, a large and tectonically important gap exists in the mid Paleozoic APWP record of the Early and Middle Devonian of North America. To fill this gap and to avoid overprints (commonly associated with magnetite), a sampling program for fossiliferous limestones and red dolomites that outcrop between Iowa and the Northwest Territories of Canada will be conducted. Results should help establish a reliable APWP for cratonic North America for this interval.