Étude paléomagnétique des roches protérozoïques de la formation de Sakami, région de la Grande Rivière, Territoire du Nouveau-Québec, Canada

• Published in: Canadian Journal of Earth Sciences
• Main Authors: Seguin, Maurice K., Sharma, Kamal N. M., Woussen, Gérard
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1981
• Subjects: General Earth and Planetary Sciences; Canada; La Grande Rivière
• Online Access: http://dx.doi.org/10.1139/e81-175; http://www.nrcresearchpress.com/doi/pdf/10.1139/e81-175

We describe a paleomagnetic study of Mid-Proterozoic sandstone of the Sakami Formation. The thermal demagnetization is more effective than by alternating field; this indicates that part of the magnetic memory is located in hematite. The mean direction of magnetization after thermal and alternating field treatments is 031, −25 α 95 = 7.1°, K = 73 and the corresponding paleopole position is 103°W, 18°S (d m = 11°, d p = 8°). These results are important because a part of this geological formation will be covered with water after completion of the development works of La Grande Rivière. [Journal Translation]