{"title":"圣劳伦斯大陆架的倒塌:土卫二还是大西洋的开放?魁北克地区古应力重建的贡献(加拿大)","authors":"Muriel Rocher, Alain Tremblay","doi":"10.1016/S1251-8050(01)01610-X","DOIUrl":null,"url":null,"abstract":"<div><p>The Saint-Lawrence Lowlands correspond to the Cambrian–Early Ordovician passive margin of the Iapetus Ocean, overlain by Ordovician deposits of the Appalachian foreland. A structural and palaeostress study of this platform near Quebec City allowed reconstructing its tectonic evolution since the Palaeozoic. The collapse of the Iapetus margin (NW–SE extension) has induced N040 normal faults. Appalachian compressions (WNW and north–south) have reactivated these border faults, and induced strike-slip faults trending N090 and N140. During the Mesozoic, NNE to NNW extensions have reactivated N090 and N040 faults. The following NE–SW compression has been active until today.</p></div>","PeriodicalId":100301,"journal":{"name":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","volume":"333 3","pages":"Pages 171-178"},"PeriodicalIF":0.0000,"publicationDate":"2001-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01610-X","citationCount":"10","resultStr":"{\"title\":\"L'effondrement de la plate-forme du Saint-Laurent : ouverture de Iapetus ou de l'Atlantique ? Apport de la reconstitution des paléocontraintes dans la région de Québec (Canada)\",\"authors\":\"Muriel Rocher, Alain Tremblay\",\"doi\":\"10.1016/S1251-8050(01)01610-X\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The Saint-Lawrence Lowlands correspond to the Cambrian–Early Ordovician passive margin of the Iapetus Ocean, overlain by Ordovician deposits of the Appalachian foreland. A structural and palaeostress study of this platform near Quebec City allowed reconstructing its tectonic evolution since the Palaeozoic. The collapse of the Iapetus margin (NW–SE extension) has induced N040 normal faults. Appalachian compressions (WNW and north–south) have reactivated these border faults, and induced strike-slip faults trending N090 and N140. During the Mesozoic, NNE to NNW extensions have reactivated N090 and N040 faults. The following NE–SW compression has been active until today.</p></div>\",\"PeriodicalId\":100301,\"journal\":{\"name\":\"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science\",\"volume\":\"333 3\",\"pages\":\"Pages 171-178\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2001-08-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S1251-8050(01)01610-X\",\"citationCount\":\"10\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S125180500101610X\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S125180500101610X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
L'effondrement de la plate-forme du Saint-Laurent : ouverture de Iapetus ou de l'Atlantique ? Apport de la reconstitution des paléocontraintes dans la région de Québec (Canada)
The Saint-Lawrence Lowlands correspond to the Cambrian–Early Ordovician passive margin of the Iapetus Ocean, overlain by Ordovician deposits of the Appalachian foreland. A structural and palaeostress study of this platform near Quebec City allowed reconstructing its tectonic evolution since the Palaeozoic. The collapse of the Iapetus margin (NW–SE extension) has induced N040 normal faults. Appalachian compressions (WNW and north–south) have reactivated these border faults, and induced strike-slip faults trending N090 and N140. During the Mesozoic, NNE to NNW extensions have reactivated N090 and N040 faults. The following NE–SW compression has been active until today.
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