Paleomagnetic‐tectonic study of Mesozoic dike swarms in the Appalachians

  title={Paleomagnetic‐tectonic study of Mesozoic dike swarms in the Appalachians},
  author={Jelle Zeilinga de Boer},
Paleomagnetic evidence indicates that most of the extensive dike swarms cutting Triassic and older formations probably intruded in a time of regional tectonic and magmatic activity distinct from the late Triassic tectogenesis. The fossil magnetic directions of the dikes coincide neither with Late Triassic nor with Early Cretaceous paleomagnetic directions, which suggests a Jurassic age for the intrusions. The dikes were emplaced along tensional fractures that were the surficial expressions of… CONTINUE READING