The Magnetic Stratigraphy of the Middle Carboniferous

对科罗拉多石炭纪沉积物的调查， 加拿大新玩法省限制了低年级学生的年龄 石炭纪-二叠纪逆超时界线 在年龄上是莫罗人。 反转序列已确定， 马林果期的上密西西比统和下宾夕法尼亚统 半岛，其中50%是正常和逆转。 这项研究将 将该序列向上延伸，以便明确地确定 PCRS的下限，并将该序列与类似的 宾夕法尼亚州、亚利桑那州和内华达州的年代沉积物。 本研究 会用绝对的 从而提高我们对上古生界年代测定的能力 事件

Investigations of Carboniferous sediments in Colorado and New Brunswick Canada have constrained the age of the lower boundary of the Permo-Carboniferous Reversed Superchron (PCRS) to be Morrowan in age. A reversal sequence has been determined from Upper Mississippian and Lowermost Pennsylvanian of the Maringuoin Peninsula which is 50% normal and reversed. This research will extend this sequence upward so as to determine unambiguously the lower limit of the PCRS and to correlate this sequence to similar age sediments in Pennsylvania, Arizona and Nevada. This research will calibrate biostratigraphic zonations with an absolute chronology and thus improve our ability to date upper Paleozoic events.